Journal articles on the topic 'Honours; Geology'
To see the other types of publications on this topic, follow the link: Honours; Geology.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Honours; Geology.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Walkden, Gordon. "A Field-Based “Oil Business Game” for Honours Geology Students." Planet 1, no. 1 (January 2001): 8–12. http://dx.doi.org/10.11120/plan.2001.00010008.
Full text
2
Johnson, G. A. L. "Sir Kingsley Charles Dunham. 2 January 1910 – 5 April 2001 Elected FRS 1955." Biographical Memoirs of Fellows of the Royal Society 49 (January 2003): 147–62. http://dx.doi.org/10.1098/rsbm.2003.0009.
Full textAbstract:
The history of the Dunham family goes back to the researches of Kingsley Dunham's grandfather, Rev. Charles Dunham (1848–1942), a Methodist Minister and diarist who, at the age of 72, brought together facts and recollections of the Dunham family. Apparently the family migrated from East Anglia and settled in the Bedford area for 200 years, centred on the village of Shillington. By the middle of the nineteenth century the family were bootmakers and shoemakers and moved to north London. Kingsley Dunham's father, Ernest Pedder Dunham, was trained in estate management at the Duke of Bedford's office in Trafalgar Square, and in 1904 he was given a position in the Pitt-Rivers estate office at Hinton St Mary, Dorset. To here he brought his bride, Edith Agnes Humphreys, to live at Newton House, Sturminster Newton. The first child, Kingsley Charles Dunham, was born on 2 January 1910. The family's time in Dorset was short, because Ernest Dunham's post came to an end in 1913 and be obtained a new appointment at Lord Boyne's estate office at Brancepeth near Durham. Although this estate was later sold to the Duke of Westminster, Ernest Dunham stayed on as agent throughout his career. Kingsley Dunham's mother Edith was a trained schoolteacher and chapel organist, and she gave him the foundations of his education and an introduction to music. Aged seven years he joined the school on the estate, Brancepeth Village School. Here he was well prepared to sit for a County Scholarship in the spring of 1921, when he was 11 years old. Dunham won the scholarship and entrance to the Durham Johnston School, a notable secondary school in the district. The teaching at the Johnston School was extremely efficient and he flourished, developing a particular interest in physical science and mathematics. His hobby was music and he was taught the organ at Durham Cathedral by the Canon Precentor, A.D. Culley. He was also a chorister at St Brandon's Church, Brancepeth, for five years, where, despite his Methodist background, the liturgy of the Anglican prayerbook made a deep and lasting impression. He was head of school in 1927 and sat for a Durham University Open Foundation Scholarship, winning a junior award. Thus, early in October 1927, aged 171/2, Dunham went up to Hatfield College, University of Durham, a scholar and later organ scholar. He was advised to read honours in chemistry with two auxiliary subjects, for which he chose physics and geology. The chemistry course was enjoyable, but the real joy was the geology course, with lectures on physical fundamentals given by Professor Arthur Holmes (FRS 1942) and practical work and fieldwork with Dr William Hopkins. The geology course and particularly the fieldwork proved to be life changing. At the end of the first year, Dunham was encouraged to continue with geology and found himself the only honours candidate in geology in his year, with almost individual attention from Professor Holmes and Dr Hopkins.
3
Tirdad, Shiva, Erwan Gloaguen, Abderezzak Bouchedda, and J. Christian Dupuis. "Three-dimensional stochastic assimilation of gravity data in Lalor volcanogenic massive sulphide, Manitoba, Canada." Canadian Journal of Earth Sciences 56, no. 5 (May 2019): 556–68. http://dx.doi.org/10.1139/cjes-2018-0166.
Full textAbstract:
We propose a new numerical workflow based on stochastic data integration where we merge a conceptual geological model, drillhole geophysical and geological logs, and surface geophysical data to compute a unified numerical model of a volcanogenic massive sulphide (VMS) deposit. The first step of the workflow consists in building a three-dimensional (3D) numerical conceptual model of the geology. This conceptual model, as well as geological logs, is then used to generate multiple equiprobable scenarios of the geology by means of multiple-point simulation (MPS). The MPS method studies high-order statistics in the space of a numerical conceptual model, making it possible to reproduce complex geological structures. We then use conventional conditional sequential Gaussian simulation, which is a method based on a node-by-node sequential process, to stochastically populate the geological grid with densities. For this purpose we use available density logs to simulate multiple equiprobable spatial distributions of the density at high spatial resolution within each geological unit separately. The stochastic high-resolution density models are iteratively combined by the gradual deformation method to minimize the difference between measured Bouguer anomaly data and the data computed on the combined realizations of density. Application of the proposed method to the Lalor deposit, a VMS deposit in Manitoba, Canada, produces a density model that honours the geology of the deposit and the Bouguer anomaly data. This unified model has the advantage to include all the available information (geological and density logs and surface geophysics) at scales appropriate for mining applications.
4
Simmons, Michael D., Peter R. Sharland, David M. Casey, Roger B. Davies, and Owen E. Sutcliffe. "Arabian Plate sequence stratigraphy: Potential implications for global chronostratigraphy." GeoArabia 12, no. 4 (October 1, 2007): 101–30. http://dx.doi.org/10.2113/geoarabia1204101.
Full textAbstract:
ABSTRACT The ability to recognise and correlate third-order depositional sequences across Arabia and between Arabia and other plates indicates that these sequences are driven by synchronous eustatic sea-level change. This is of value in providing guidance for the definitions of stages, which are the fundamental units of chronostratigraphy. Each Phanerozoic stage requires a Global Stratotype Section and Point (GSSP), which is a location and specific bedding plane where the base of each stage is defined. This definition is tied to an event in the rock record useful for correlation. Progress in defining GSSPs has been delayed because of difficulties in choosing the most appropriate event and section to relate to a definition. It is recommended here that stage boundaries be related to correlative conformities of sequence boundaries. This closely links chronostratigraphy with sequence stratigraphy and honours the original concepts upon which many stages were first described in the 19th Century.
5
Lord, Alan R., and John E. Whittaker. "On the award of TMS Honorary Membership, 17 November 2004 Professor Robin Whatley – an appreciation." Journal of Micropalaeontology 24, no. 1 (May 1, 2005): 95–96. http://dx.doi.org/10.1144/jm.24.1.95.
Full textAbstract:
Abstract. Robin Charles (Ignatius) Whatley was born a ‘Man of Kent’ in 1936. He was educated at Ashford Grammar School, where an inspiring teacher, Frank Kenworthy, stimulated a series of pupils to become earth scientists, for example, John Catt (University College London), Roy Clements (Leicester University), Ron Cook (recently Vice Chancellor of York University) and Chris Wilson (Open University). Following a varied post-school career as a farmer (1954), National Serviceman (1955–1957), and inshore fisherman based at Christchurch, Hampshire (1957–1959), Robin joined Hull University to read Geology. He graduated with a First Class Honours Degree in 1962, one of the first two ever to be awarded by the department. An interest in Micropalaeontology, in particular ostracods, became apparent during undergraduate years and formed part of his BSc dissertation. A further three years at Hull followed, funded by the Department of Scientific and Industrial Research (DSIR, fore-runner of the modern research councils), leading to the award of a PhD degree in 1966 for a thesis on British Callovian and Oxfordian ostracods, carried out under the supervision of John Neale. As a mature student Robin felt it to be his duty to write stern letters to DSIR pointing out the shortcomings of its procedures and officials, and he was somewhat surprised when, visiting DSIR for a Post-Doctoral Fellowship interview, he discovered that his letters were regularly pinned to the staff notice board to be read by all. As it turned out a Fellowship was not required, as Robin was appointed Assistant Lecturer in Geology . . .
6
Paar, Rinaldo. "Carl Ritter von Ghega – 2018 Surveyor of the Year." Kartografija i geoinformacije 18, no. 32 (December 15, 2019): 64–78. http://dx.doi.org/10.32909/kg.18.32.5.
Full textAbstract:
Carl Ritter von Ghega was proclaimed 2018 Surveyor of the Year on 21 March 2018. In this paper, we explore how this Austrian of Albanian extraction, born in Venice, played an important role in geodesy and the surveying profession and the honours he got up to the present day. We investigate his background and details of his professional path, education and most important contributions in the areas of surveying and engineering at large. We describe his most significant achievement, that is, the Semmering Railway, which was dismissed at the time as impossible to achieve. In 1998, the Semmering Railway was inscribed in the UNESCO World Heritage List. Apart from this project, which left a great impression on the engineering profession, von Ghega also developed the Borovnica Viaduct built in the mid-19th century in Slovenia.
7
Wong, Theo E., Salomon B. Kroonenberg, and Tom J. A. Reijers. "Editorial." Netherlands Journal of Geosciences - Geologie en Mijnbouw 95, no. 4 (November 21, 2016): 373–74. http://dx.doi.org/10.1017/njg.2016.41.
Full textAbstract:
This special issue of the Netherlands Journal of Geosciences / Geologie en Mijnbouw contains the proceedings of the Conference on the Economic Geology of Suriname, held on 16 January 2015 in The Hague, the Netherlands, to honour Dr Eddie Jharap (Fig. 1), founder and former Chief Executive Officer of Staatsolie, Suriname. At this conference the President of the Royal Netherlands Geological and Mining Society (KNGMG), Drs Lucia van Geuns, awarded him the prestigious Van Waterschoot van der Gracht Medal, the highest honour available to an earth scientist in the Netherlands. Dr Jharap expressed his gratitude in a warm and humble speech which highlighted both his strong personal motivation to contribute to the development of Suriname, and his astonishing accomplishments since the 1980s in founding and developing Staatsolie.
8
Graversen, Ole, and Jens Morten Hansen. "Danmarks Geologipris -Denmark's Geology Prize." Bulletin of the Geological Society of Denmark 41 (November 30, 1994): 126–27. http://dx.doi.org/10.37570/bgsd-1995-41-22.
Full textAbstract:
Denmark's Geology Prize was instituted in 1993 by the Geological Survey of Denmark together with the Geological Society of Denmark. The prize was set up in order to honour high quality work and publications on the geology of Denmark. Denmark's Geology Prize was presented for the fir·st time at the 100 years anniversary symposium of the Geological Society of Denmark. It was awarded to professor Asgcr Berthelsen in honour of his contributions to Danish Quaternary geology and for his work on the lithosphere of Denmark and adjoining areas.
9
Jenkyns, Hugh. "Geology Honors Exceptional Reviewers." Geology 35, no. 2 (2007): 192. http://dx.doi.org/10.1130/0091-7613(2007)35[192:gher]2.0.co;2.
Full text
10
Dewey, John Frederick, and Bernard Elgey Leake. "Robert Millner Shackleton. 30 December 1909 – 3 May 2001." Biographical Memoirs of Fellows of the Royal Society 50 (January 2004): 285–97. http://dx.doi.org/10.1098/rsbm.2004.0018.
Full textAbstract:
Robert Millner Shackleton, who died peacefully in his sleep on 3 May 2001, was born on 30 December 1909 in Purley, Surrey, the son of John Millner Shackleton (an electrical engineer of Irish derivation who, at one time, worked for the Post Office telephones) and Agnes Mitford Shackleton (née Abraham). He was distantly related to the Antarctic explorer Sir Ernest Shackleton and was educated at the Quaker school of Sidcot, which profoundly influenced his subsequent life and career. He entered Liverpool University in January 1927 and graduated with a first–class honours BSc in geology in July 1930 under P. G. H. Boswell FRS, the first George Herdman Professor of Geology. He was only the fourth student in the history of the department to achieve a First. Shackleton's first visit to Africa was as an undergraduate in July to September 1929 to attend the 15th International Congress in Pretoria, South Africa. He always remembered Boswell's help and how he had persuaded him into going and even shared a cabin on the Union Castle ship to South Africa with him to reduce the cost at a time when most professors would not have done so. He saw the Karroo, the Kimberley diamond mine, the Witwatersrand mines, the Bushveld, Rhodesia, and the Drakensberg. This visit to Africa was to be the foundation of his love of Africa, its people and its geology. Shackleton went on to complete a PhD at Liverpool in December 1933 on the Moel Hebog area of North Wales, between Tremadoc and Nantlle, although some of the work was done while at Imperial College, London (IC), where he was Beit Research Fellow from 1932 to 1934, largely facilitated by Boswell, who was also an IC man and had moved back there to the Chair in 1930. The Moel Hebog mapping included examining some cliff faces never scaled by any geologist or, indeed, anyone before; it was part of a systematic re–survey of North Wales encouraged by Boswell, and followed the surveys of Snowdonia by David and Howell Williams. The Moel Hebog mapping was superb and, with his other field achievements, led to his receiving the Silver Medal of the Liverpool Geological Society in 1957. Shackleton was one of several Liverpool students, including one of us (B.E.L.), who from the 1920s onwards did part of their PhD work at IC. He had a petrological training, being taught silicate analysis by A. W. Groves at IC, but the petrological and palaeogeographic interpretation of his PhD area was hindered by the fact that ignimbrites had not yet been recognized and only a few chemical analyses could be completed. The published account (7) è did not appear until 1959 and then only because of the encouragement and devoted help given by Dr J. C. Harper.
11
Skjernaa, L. "Festskrift i anledning af professor Asger Berthelsens 70 års fødselsdag den 30. april 1998." Bulletin of the Geological Society of Denmark 46 (February 10, 2000): 121–23. http://dx.doi.org/10.37570/bgsd-1999-46-18.
Full textAbstract:
This volume is in honour of Professor Asger Berthelsen on the occasion of his 70th birthday. Asger Berthelsen has made important contributions within the areas of basement geology, tectonics, structural geology, Quaternary geology, salt tectonics and deep seismic interpretations. He is an outstanding writer and illustrator.
12
Yusupov, R. G., C. J. Stanley, M. D. Welch, J. Spratt, G. Cressey, M. S. Rumsey, R. Seltmann, and E. Igamberdiev. "Mavlyanovite, Mn5Si3: a new mineral species from a lamproite diatreme, Chatkal Ridge, Uzbekistan." Mineralogical Magazine 73, no. 1 (February 2009): 43–50. http://dx.doi.org/10.1180/minmag.2009.073.1.43.
Full textAbstract:
Mavlyanovite, ideally Mn5Si3, is a new mineral from a lamproite diatreme close to the upper reaches of the Koshmansay river, Chatkal ridge, Uzbekistan. It occurs together with unnamed manganese siliciphosphide and manganese silicicarbide minerals in round to ovoid segregations, up to 10 cm in diameter, in volcanic glass. Segregations of hexagonal prismatic mavlyanovite up to 1–2 mm occur in interstices in the matrix and tiny inclusions (1–2 μm) of alabandite and khamrabaevite occur within mavlyanovite. It is opaque with a metallic lustre, has a dark-grey streak, is brittle with a conchoidal fracture and a near-perfect basal cleavage. VHN100 is 1029–1098 kg/mm2 (Mohs hardness ~7). In plane-polarized reflected light, mavlyanovite is a pale-brownish-grey against the accompanying unnamed manganese silicicarbide (white). Reflectance values and colour data are tabulated. Average results of 19 electronmicroprobe analyses give Mn70.84, Fe 6.12, Si 22.57, Ti 0.15, P 0.18, total 99.86 wt.% leading to an empirical formula of (Mn4.66Fe0.40)5.06(Si2.91Ti0.01P0.02)2.94 based on8 a.p.f.u. The calculated density is 6.06 g/cm3, (on the basis of the empirical formula and unit-cell parameters from the structure determination). Mavlyanovite is hexagonal (P63/mcm) with a 6.8971(7), c 4.8075(4) Å, V 198.05(3) Å3 and Z = 2. The structure has been determined and refined to R1 = 0.017, wR2 = 0.044, GoF = 1.16. Mavlyanovite is the naturally-occurring analogue of synthetic Mn5Si3 which is the parent aristotype structure of the Nowotny intermetallic phases studied extensively by the material-science community. It is also the Mn-dominant analogue of xifengite Fe5Si3. The mineral name honours Academician Gani Arifkhanovich Mavlyanov (1910–1988), for his contributions to the understanding of the geology of Uzbekistan.
13
Briosa e Mota, Helena. "AGOSTINHO DA SILVA DIVULGADOR DE CIÊNCIA E CIENTISTA." História da Ciência e Ensino: construindo interfaces 20 (December 29, 2019): 183–94. http://dx.doi.org/10.23925/2178-2911.2019v20espp183-194.
Full textAbstract:
ResumoDe estudante sem grandes resultados a aluno de excelência, Agostinho da Silva, uma das personalidades que marcou o século XX português e lusófono, lembra ter sido despertado para o prazer do saber aos dez anos pelo professor de geografia. Daí à concretização de uma obra incomparável de reflexão e divulgação cultural em todas as áreas do saber, com particular incidência na científica, foi um passo. Da geografia à astronomia, geologia, antropologia, botânica, mineralogia, zoologia e entomologia, da literatura de viagens à religião e biografias de sábios, de tudo encontramos nas Palestras Radiofónicas, nos Cadernos de Divulgação Cultural e nas biografias que escreve sobre os que dedicaram a vida à investigação e à Ciência. Partindo do conhecimento e da investigação científica, evolui para a divulgação do conhecimento de forma interactiva, colocando as diferentes áreas do saber em conexão, demonstrando que nada, neste mundo, funciona ou existe por si só. Eis o ponto de partida para a nossa reflexão: de que forma pode o paradigma educacional da interligação entre várias áreas promover com êxito a disseminação do saber, em concreto do saber científico? Pelo exemplo e pela prática, Agostinho da Silva dá a resposta. Adicionalmente, conheceremos o trabalho do cientista-investigador no Instituto Oswaldo-Cruz, Manguinhos, Rio de Janeiro, Brasil. Palavras-chave: Agostinho da Silva – divulgação cultural – ciência – estudos científicos – Instituto Oswaldo-Cruz Abstract Agostinho da Silva, one of the personalities who left an impressive mark on the cultural life of the Portuguese speaking countries in the 20th century, was a mediocre student at the age of 10, who soon evolved to a straight A student, thanks to his Geography teacher. After his graduation with honours and summa cum laude PhD, he produced a multi-volume work recognized as one of the most significant academic achievements of spreading knowledge in Portugal to those who couldn’t afford education or culture. In particular, we’ll discuss Da Silva’s contribution to the dissemination of scientific knowledge by means of a radio program, together with a collection of booklets ranging from geography to geology, anthropology, botany, mineralogy, zoology and entomology, from travel literature and religion to biographies of men and women who dedicated their lives to science investigation. From scientific information to research results, Da Silva evolves to the notion of interactive knowledge. In fact, he gives evidence that all knowledge fields are connected. That’s the starting point for our reflection: how can this educational paradigm affect today’s way of encouraging scientific studies? In addition, we’ll present Da Silva’s work as a researcher and a scientist at Oswaldo-Cruz Institute in Manguinhos, Rio de Janeiro, Brazil. Keywords: Agostinho da Silva – cultural and scientific promotion – scientific studies – Oswaldo-Cruz Institute
14
Greenwood, H. J., and John G. Fyles. "W. H. Mathews Symposium: A celebration." Canadian Journal of Earth Sciences 23, no. 6 (June 1, 1986): 857–58. http://dx.doi.org/10.1139/e86-087.
Full textAbstract:
On June 30, 1984, Bill Mathews retired from full-time teaching in the Department of Geological Sciences at the University of British Columbia (UBC). On October 10, 1984, a large group of his friends and admirers met in a symposium to honour his immense contributions to science and to students of the Earth, but more importantly, to celebrate his continuing intense scientific activity. His personal and scientific vigour continues unabated, and "retirement" only means the opportunity to concentrate on his research, full-time.Bill Mathews is a phenomenon. It is not easy to keep up with the list of his publications, let alone to emulate his productivity. Since his first scientific publication in 1942, he has written 125 papers, which translates into three papers every year for 42 years! Now that he can devote himself entirely to this work, we can only suppose that this productivity will increase.W. H. Mathews received the B.A.Sc. degree in Geological Engineering from UBC in 1940 and the M.A.Sc. from UBC in 1941 and spent the war years in strategic minerals research with the B.C. Department of Mines, following which he continued his studies, receiving the Ph.D. from University of California, Berkeley, in 1948. In 1951 he joined the faculty at UBC, and he served as Head of the Department of Geology from 1964 to 1971. Dr. Mathews has been honoured by scientific societies and is a Professional Engineer, Fellow of the Geological Society of America, a member of the American Association of Petroleum Geologists and of the Geological Association of Canada, and a Fellow of the Royal Society of Canada.Perhaps the most striking feature of the symposium to honour Bill Mathews was the recognition of the breadth of his contributions. He calls himself a geomorphologist and Quaternary geologist, but the titles of his papers tell a different story. They tell of a man interested in everything at a fundamental and penetrating level, who has made important contributions to glaciology, volcanology, Tertiary tectonics, coal geology, mineral deposits, structural geology, geochronology, sedimentology, stratigraphy, engineering geology, and marine geology. It is very rare to find such a person, who can carry on a high-level scientific conversation with any specialist in the subdisciplines of the Earth sciences. Most of us are content to struggle with some mastery of a single subdiscipline, but Bill's curiosity reaches into every corner. This catholicity of interest has been a wonderful stimulus for his graduate students, undergraduate students, and colleagues.The four papers that follow this introduction were presented at the symposium and are kept together in this issue of the Canadian Journal of Earth Sciences as a tribute to Bill Mathews and in recognition of the astonishing range of his interests and contributions. We are pleased to celebrate in this way his return to full-time research after a career of combining his research with the full-time work of a distinguished professor.As is always the case, many of Bill's scientific friends could not produce a manuscript and symposium lecture in time to appear in this issue. Without exception, however, they join us in our applause of Bill Mathews' distinguished and continuing scientific career.
15
Stanley, C. J., A. J. Criddle, J. Spratt, A. C. Roberts, J. T. Szymański, and M. D. Welch. "Kingstonite, (Rh,Ir,Pt)3S4, a new mineral species from Yubdo, Ethiopia." Mineralogical Magazine 69, no. 4 (August 2005): 447–53. http://dx.doi.org/10.1180/0026461056940262.
Full textAbstract:
AbstractKingstonite, ideally Rh3S4, is a new mineral from the Bir Bir river, Yubdo District, Wallaga Province, Ethiopia. It occurs as subhedral, tabular elongate to anhedral inclusions in a Pt-Fe nugget with the associated minerals isoferroplatinum, tetraferroplatinum, a Cu-bearing Pt-Fe alloy, osmium, enriched oxide remnants of osmium, laurite, bowieite, ferrorhodsite and cuprorhodsite. It is opaque with a metallic lustre, has a black streak, is brittle and has a subconchoidal fracture and a good cleavage parallel to [001]. VHN25 is 871–920 kg/mm2. In plane-polarized reflected light, kingstonite is a pale slightly brownish grey colour. It is weakly pleochroic and displays a weak bireflectance. It does not possess internal reflections. The anisotropy is weak to moderate in dull greys and browns. Reflectance data and colour values are tabulated. Average results of twenty electron microprobe analyses on four grains give Rh 46.5, Ir 16.4, Pt 11.2, S 25.6, total 99.7 wt.%. The empirical formula is (Rh2.27Ir0.43Pt0.29)Σ2.99S4.01, based on 7 atoms per formula unit (a.p.f.u.). Kingstonite is monoclinic (C2/m) with a = 10.4616(5), b = 10.7527(5), c = 6.2648(3) Å, β = 109.000(5)°, V = 666.34(1) Å3 (Z = 6). The calculated density is 7.52 g/cm3 (on the basis of the empirical formula and unit-cell parameters refined from powder data). The seven strongest X-ray powder-diffraction lines [d in Å(I) (hkl)] are: 3.156 (100) (310), 3.081 (100) (1̄31), 2.957 (90) (002), 2.234 (60) (202), 1.941 (50) (2̄23), 1.871 (80) (4̄41) and 1.791 (90) (060, 1̄33). The structure of kingstonite was solved and refined to Rp = 3.8%. There are four distinct metal sites with Rh occupancies of 0.64–0.89. Two metal sites are regular RhS6 octahedra that share edges to form a ribbon running parallel to c. The other two metal sites are coordinated by 4 S + 2 Rh and 5 S + 2 Rh and define a puckered Rh6 ring. The ribbons of regular RhS6 octahedra alternate with the columns of Rh6 rings linked by S atoms. S–S bridges also connect the ribbons and columns. As such, the kingstonite structure is essentially that of synthetic Rh3S4. Minor differences in the unit-cell parameters, atom coordinates and displacement parameters of kingstonite and synthetic Rh3S4 arise from the considerable substitution of Ir for Rh. The mineral name honours Gordon Kingston (formerly of Cardiff University) in recognition of his contributions to platinum group element mineralogy and the geology of their mineral deposits.
16
Elliott, P., U. Kolitsch, G. Giester, E. Libowitzky, C. McCammon, A. Pring, W. D. Birch, and J. Brugger. "Description and crystal structure of a new mineral – plimerite, ZnFe3+4(PO4)3(OH)5 – the Zn-analogue of rockbridgeite and frondelite, from Broken Hill, New South Wales, Australia." Mineralogical Magazine 73, no. 1 (February 2009): 131–48. http://dx.doi.org/10.1180/minmag.2009.073.1.131.
Full textAbstract:
Plimerite, ideally Zn (PO4)3(OH)5, is a new mineral from the Block 14 Opencut, Broken Hill, New SouthWales. It occurs as pale-green to dark-olive-green, almost black, acicular to prismatic and bladed crystals up to 0.5 mm long and as hemispherical aggregates of radiating acicular crystals up to 3 mm across. Crystals are elongated along [001] and the principal form observed is {100} with minor {010} and {001}. The mineral is associated with hinsdalite-plumbogummite, pyromorphite, libethenite, brochantite, malachite, tsumebite and strengite. Plimerite is translucent with a pale-greyish-green streak and a vitreous lustre. It shows an excellent cleavage parallel to {100} and {010} and distinct cleavage parallel to {001}. It is brittle, has an uneven fracture, a Mohs’ hardness of 3.5–4, D(meas.) = 3.67(5) g/cm3 and D(calc.) = 3.62 g/cm3 (for the empirical formula). Optically, it is biaxial negative with α = 1.756(5), β = 1.764(4), γ = 1.767(4) and 2V(calc.) of –63º; pleochroism is X pale-greenish-brown, Y pale-brown, Z pale-bluish-green; absorption Z > X > Y; optical orientation XYZ = cab. Plimerite is orthorhombic, space group Bbmm, unit-cell parameters: a = 13.865(3) Å, b = 16.798(3) Å, c = 5.151(10) Å, V = 1187.0(4) Å3 (single-crystal data) and Z = 4. Strongest lines in the X-ray powder diffraction pattern are [d (A˚ ), I, hkl]: 4.638, (50), (111); 3.388, (50), (041); 3.369, (55), (131); 3.168, (100), (132); 2.753, (60), (115); 2.575, (90), (200); 2.414, (75), (220); 2.400, (50), (221); 1.957, (40), (225). Electron microprobe analysis yielded (wt.%): PbO 0.36, CaO 0.17, ZnO 20.17, MnO 0.02, Fe2O3 29.82, FeO 2.98, Al2O3 4.48, P2O5 32.37, As2O5 0.09, H2O (calc) 6.84, total 97.30 (Fe3+/Fe2+ ratio determined by Mössbauer spectroscopy). The empirical formula calculated on the basis of 17 oxygens is Ca0.02Pb0.01Zn1.68Al0.60P3.09As0.01O17.00H5.15. The crystal structure was solved by direct methods and refined to an R1 index of 6.41% for 1332 observed reflections from single-crystal X-ray diffraction data (Mo-Kα radiation, CCD area detector). The structure of plimerite is isotypic with that of rockbridgeite and is based on face-sharing trimers of (Mϕ6) octahedra which link by sharing edges to form chains, that extend in the b-direction. Chains link to clusters comprising pairs of corner-sharing (Mϕ6) octahedra that link to PO4 tetrahedra forming sheets parallel to (001). The sheets link via octahedra and tetrahedra corners into a heteropolyhedral framework structure. The mineral name honours Professor Ian Plimer for his contributions to the study of the geology of ore deposits.
17
Fagereng, A., V. G. Toy, J. V. Rowland, and A. Robert. "Geology of the Earthquake Source A Volume in Honour of Rick Sibson." Environmental & Engineering Geoscience 19, no. 2 (May 1, 2013): 195–96. http://dx.doi.org/10.2113/gseegeosci.19.2.195.
Full text
18
Roden, Rocky. "2013 Honors and Awards citations." Leading Edge 33, no. 2 (February 2014): 116. http://dx.doi.org/10.1190/tle33020116.1.
Full text
19
Dræge, Anders. "Geo-consistent depth trends: Honoring geology in siliciclastic rock-physics depth trends." Leading Edge 38, no. 5 (May 2019): 379–84. http://dx.doi.org/10.1190/tle38050379.1.
Full textAbstract:
A new method for modeling rock-physics depth trends called “geo-consistent depth trend modeling” is presented. No new rock-physics models are developed in this work, but existing models are put together in a new workflow. The workflow integrates rock-physics modeling with petrologic porosity models that account for burial, pressure, and temperature history. The new approach honors geologic trends, patterns, and cyclicity in the rocks. Examples based on well data are given to show how depositional trends can influence seismic response and depth trends. Geo-consistent depth trends are compared with the standard method for rock-physics depth trends, and differences are discussed. Geo-consistent depth trends can contribute to increased understanding of the subsurface and give input to risking of targets in exploration.
20
Wu, Xinming. "Building 3D subsurface models conforming to seismic structural and stratigraphic features." GEOPHYSICS 82, no. 3 (May 1, 2017): IM21—IM30. http://dx.doi.org/10.1190/geo2016-0255.1.
Full textAbstract:
Subsurface modeling from seismic and borehole data is important for reservoir prediction, geophysical exploration, and production. A reasonable model should honor borehole rock properties and conform to seismic structural and stratigraphic features. Such a subsurface model can be difficult to build in cases complicated by faults and unconformities. Automatic and semiautomatic methods have been proposed to build subsurface models from seismic and borehole data; however, seismic structural and stratigraphic features and borehole measurements are not fully used in most methods. I have developed a workflow to fully use seismic and borehole data to build subsurface models that honor borehole measurements and conform to seismic horizons, faults, unconformities, and stratigraphic features such as channels. In this workflow, I first automatically remove the faulting and folding in seismic and borehole data and map them into an unfaulted and flattened space, in which seismic reflectors and borehole measurements corresponding to the same geologic layers are horizontally aligned. I then build a subsurface model in this unfaulted and flattened space by computing a sequence of 2D horizontal interpolations of borehole data. Each horizontal interpolation is guided by the stratigraphic features apparent in the corresponding horizontal seismic slice, so that the interpolant conforms to the seismic stratigraphic features. I finally map the interpolated model back into the input space and obtain a subsurface model that honors the seismic and borehole data. I demonstrate the proposed workflow using synthetic and real examples complicated by faults and unconformities.
21
Clark, Dean. "GSH-SEG 2014 Spring Symposium honors Fred Hilterman." Leading Edge 33, no. 4 (April 2014): 440–43. http://dx.doi.org/10.1190/tle33040440.1.
Full text
22
Baird, Graham B., Bruce W. Selleck, and Catherine H. Shrady. "Introduction: New developments in Grenville geology: In honor of James McLelland." Geosphere 7, no. 1 (February 2011): 1. http://dx.doi.org/10.1130/ges00652.1.
Full text
23
Colombo, Daniele, Ernesto Sandoval-Curiel, Mats Ris, and Salvarajah Seeni. "Near-surface and anisotropy modeling for efficient land seismic depth imaging in low-relief geology." Interpretation 5, no. 4 (November 30, 2017): SR1—SR12. http://dx.doi.org/10.1190/int-2017-0036.1.
Full textAbstract:
Prestack depth migration of land data presents unique characteristics and challenges that distinguish it from the workflows applied for marine data. Such unique characteristics are primarily related to the near surface. In areas of low-relief geology, near-surface velocity variations can obscure the reservoir structure. The remaining deeper earth model section has good lateral continuity and can be described effectively by smooth velocity fields. Strategies for estimating the near-surface effects and incorporating them into a processing workflow are of primary importance for the successful depth imaging of land seismic data. The second important aspect of a depth imaging workflow is that the seismic image must honor the well markers or formation tops. The subhorizontal fine-scale layering of low-relief structures can cause anisotropy that needs to be taken into account to achieve accurate well ties and good image quality. We have evaluated the application of an efficient workflow to achieve fast and reliable depth imaging in layered geology; this involves the decomposition of the near-surface velocity into short-, medium-, and long-wavelength terms followed by reflection velocity analysis and anisotropic parameter scanning. The long-wavelength components are solved by dynamic velocity analysis, whereas the medium- and short-wavelength terms are evaluated by surface-consistent analysis applied to refracted and reflected data. Interaction with seismic interpreters and geology-consistent updates mitigates the possibility of introducing errors in areas not covered by wells. The workflow is applied to a structure-controlled wadi in central Saudi Arabia showing complex near-surface conditions and imaging problems. The study incorporates high-resolution helicopter-borne transient electromagnetic data that are used to constrain seismic traveltime inversion through cross-gradient structural regularization (joint inversion). Fast and robust depth imaging constrained by well data is obtained through accurate estimation of near-surface velocities, anisotropy, and geology-consistent analysis.
24
Macrae, Euan J., Clare E. Bond, Zoe K. Shipton, and Rebecca J. Lunn. "Increasing the quality of seismic interpretation." Interpretation 4, no. 3 (August 1, 2016): T395—T402. http://dx.doi.org/10.1190/int-2015-0218.1.
Full textAbstract:
Geologic models are based on the interpretation of spatially sparse and limited resolution data sets. Nonunique interpretations often exist, resulting in commercial, safety, and environmental risks. We surveyed 444 experienced geoscientists to assess the validity of their interpretations of a seismic section for which multiple concepts honor the data. The most statistically influential factor in improving interpretation was writing about geologic time. A randomized controlled trial identified for the first time a significant causal link between being explicitly requested to describe the temporal geologic evolution of an interpretation and increased interpretation quality. These results have important implications for interpreting geologic data and communicating uncertainty in models.
25
Poole, Alan B. "Dr F.A. Middlemiss — a geologist honoured." Proceedings of the Geologists' Association 108, no. 3 (January 1997): 163–64. http://dx.doi.org/10.1016/s0016-7878(97)80022-3.
Full text
26
Fowler, A. R., R. O. Greiling, and M. M. Abdeen. "Arabian–Nubian Precambrian basement geology – Progress and developments: Introduction to the issue in honour of Samir El-Gaby." Journal of African Earth Sciences 99 (November 2014): 1–3. http://dx.doi.org/10.1016/j.jafrearsci.2014.06.004.
Full text
27
Schmid, Stefan M., Neil Mancktelow, Jon Mosar, O. Adrian Pfiffner, and Jean-Paul Schaer. "Modern methods in Structural Geology and Tectonics: a series of articles in honour of Martin Burkhard (1957-2006)." Swiss Journal of Geosciences 101, no. 2 (September 2008): 245–49. http://dx.doi.org/10.1007/s00015-008-1269-x.
Full text
28
Sibley, Duncan. "Dolomites: A Volume in Honour of Dolomieu. Bruce Purser , Maurice Tucker , Donald Zenger." Journal of Geology 103, no. 6 (November 1995): 729. http://dx.doi.org/10.1086/629793.
Full text
29
Karnyushina, Evgeniya E. "The theory of sedimentation cyclicity of N.B. Vassoevich in the educational and scientific activities of the Petroleum Geology Department of Lomonosov Moscow State University in the XXI century." Georesursy 24, no. 2 (May 16, 2022): 16–21. http://dx.doi.org/10.18599/grs.2022.2.3.
Full textAbstract:
The article is devoted to the 120th anniversary of Nikolay Bronislavovich Vassoevich (1902–1981) – a famous petroleum geologist, professor, corresponding member of the USSR Academy of Sciences. The article recalls his significant achievements in the field of fundamental geology. The first and main work in this field was his monograph on the methodology for studying the sedimentation cyclicity of flysch strata (1948), with the continuation of the topic in the next book, published in 1951. The scientific heritage of N.B. Vassoevich, who headed the Petroleum Geology Department of Lomonosov Moscow State University in 1963–1981, is preserved and developed in the modern educational and scientific activities of this Department. Teachers, staff and students with deep gratitude and respect honor the memory of N.B. Vassoevich, using his methodological recommendations on sedimentation cyclicity both in the training course of lithofacial analysis and applied in practical work in the study of oil and gas bearing strata of sedimentary rock basins. A huge role in the development of the terminology of this theory is associated with the development of the conceptual base of this geological direction. Professor N.B. Vassoevich had invested continuous work on the creation of systematic and logical classifications according to the composition, structure, genesis and hierarchy of geological sedimentary bodies that make up oil and gas bearing rock complexes.
30
Abdeen, Mamdouh M., Abdelrahman Fowler, Baher El-Kaliouby, and Reinhard O. Greiling. "Introduction to the Special Issue on the Precambrian Geology of Egypt in honour of Professor Mahmoud Fawzy El Ramly." Journal of African Earth Sciences 146 (October 2018): 1–3. http://dx.doi.org/10.1016/j.jafrearsci.2018.08.001.
Full text
31
McGrew, Allen J., and Joshua J. Schwartz. "Introduction: Active Margins in Transition—Magmatism and Tectonics through Time: An Issue in Honor of Arthur W. Snoke." Geosphere 17, no. 4 (June 10, 2021): 981–86. http://dx.doi.org/10.1130/ges02422.1.
Full textAbstract:
Abstract The evolution of active margins through time is the record of plate tectonics as inscribed on the continents. This themed issue honors the eclectic contributions of Arthur W. Snoke (Fig. 1) to the study of active margins with a series of papers that amply demonstrate the broad scope of active margin tectonics and the diverse methods that tectonic geologists employ to decipher their histories. Taken together, this set of papers illustrates the diversity of boundary conditions that guide the development of active margins and the key parameters that regulate their evolution in time and space.
32
Olaniyan, Oladele, Richard S. Smith, and Bruno Lafrance. "Regional 3D geophysical investigation of the Sudbury Structure." Interpretation 3, no. 2 (May 1, 2015): SL63—SL81. http://dx.doi.org/10.1190/int-2014-0200.1.
Full textAbstract:
The 3D geologic and structural setting of the Sudbury Structure was predicted by an integration of surface and subsurface geologic data with 2.5D modeling of high-resolution airborne magnetic and gravity data using 3D GeoModeller software. Unlike other CAD-based 3D software, GeoModeller uses the field interpolator method, whereby contacts of rock units are assumed to be equipotential surfaces, whereas orientation data determine the gradient and direction of the surfaces. Contacts and orientation variables are cokriged to generate 3D continuous surfaces for each geologic unit. Our 3D geologic model was qualitatively evaluated by forward computing the predicted gravity response at 1 m above topography and by comparing this response to the measured gravity field. Large-scale structures within the Onaping Formation and Archean basement, which overlie and underlie the Sudbury Igneous Complex (SIC), respectively, were not the cause of the linear gravity high in the center of the Sudbury Structure. We suggested that the deformation of the initial circular SIC may have commenced under the Sudbury Basin due to the reversal of the normal faults related to the Huronian rift system during the Penokean orogeny, therefore resulting into a north verging fold at the base of the SIC in the south range. This new interpretation was consistent with the magnetic and gravity data and honoured most of the significant seismic reflectors in the Lithoprobe seismic sections.
33
Nawaz, Muhammad Atif, Andrew Curtis, Mohammad Sadegh Shahraeeni, and Constantin Gerea. "Variational Bayesian inversion of seismic attributes jointly for geologic facies and petrophysical rock properties." GEOPHYSICS 85, no. 4 (June 1, 2020): MR213—MR233. http://dx.doi.org/10.1190/geo2019-0163.1.
Full textAbstract:
Seismic attributes (derived quantities) such as P-wave and S-wave impedances and P-wave to S-wave velocity ratios may be used to classify subsurface volume of rock into geologic facies (distinct lithology-fluid classes) using pattern recognition methods. Seismic attributes may also be used to estimate subsurface petrophysical rock properties such as porosity, mineral composition, and pore-fluid saturations. Both of these estimation processes are conventionally carried out independent of each other and involve considerable uncertainties, which may be reduced significantly by a joint estimation process. We have developed an efficient probabilistic inversion method for joint estimation of geologic facies and petrophysical rock properties. Seismic attributes and petrophysical properties are jointly modeled using a Gaussian mixture distribution whose parameters are initialized by unsupervised learning using well-log data. Rock-physics models may be used in our method to augment the training data if the existing well data are limited; however, this is not required if sufficient well data are available. The inverse problem is solved using the Bayesian paradigm that models uncertainties in the form of probability distributions. Probabilistic inference is performed using variational optimization, which is a computationally efficient deterministic alternative to the commonly used sampling-based stochastic inference methods. With the help of a real data application from the North Sea, we find that our method is computationally efficient, honors expected spatial correlations of geologic facies, allows reliable detection of convergence, and provides full probabilistic results without stochastic sampling of the posterior distribution.
34
Matos, Suzana dos Santos, Ana Paula da Silva Francisco, Denis Cavacic, and Ulisses dos Santos Gonçalves. "Tradução em geociências e além." Terrae Didatica 18 (December 13, 2022): e022036. http://dx.doi.org/10.20396/td.v18i00.8671638.
Full textAbstract:
Professor Associado do Departamento de Paleontologia e Estratigrafia do Instituto de Geociências da Universidade Federal do Rio Grande do Sul (UFRGS), Doutor em Ecologia da Paisagem, Mestre em Geociências e Geólogo pela mesma instituição, Rualdo Menegat é ainda Doutor Honoris Causa pela Universidade Ada Byron (Peru) e Professor da Cátedra UNESCO/Rede UniTwin de Desenvolvimento Sustentável/FLACAM (La Plata, Argentina). Seus mais de 30 anos de vida acadêmica, entre pesquisa e ensino, também foram marcados pelas traduções dos mais famosos manuais de Geologia por meio dos quais estudantes e sociedade conhecem Mineralogia, Sedimentologia e outras áreas das Geociências. De forma muito solícita e entusiasmada o professor, cientista e tradutor Rualdo Menegat concedeu entre novembro de 2021 e janeiro de 2022 a entrevista que segue, na qual relata com leveza um pouco da experiência de traduzir tão vasto material, constrói um panorama da evolução do ensino de Geologia no Brasil e tabula uma ampla e interessante discussão científica.
35
He, Nanqun, Dean S. Oliver, and Albert C. Reynolds. "Conditioning Stochastic Reservoir Models to Well-Test Data." SPE Reservoir Evaluation & Engineering 3, no. 01 (February 1, 2000): 74–79. http://dx.doi.org/10.2118/60687-pa.
Full textAbstract:
Summary Generating realizations of reservoir permeability and porosity fields that are conditional to static and dynamic data are difficult. The constraints imposed by dynamic data are typically nonlinear and the relationship between the observed data and the petrophysical parameters is given by a flow simulator which is expensive to run. In addition, spatial organization of real rock properties is quite complex. Thus, most attempts at conditioning reservoir properties to dynamic data have either approximated the relationship between data and parameters so that complex geologic models could be used, or have used simplified spatial models with actual production data. In this paper, we describe a multistep procedure for efficiently generating realizations of reservoir properties that honor dynamic data from complex stochastic models. First, we generate a realization of the rock properties that is conditioned to static data, but not to the pressure data. Second, we generate a realization of the production data (i.e., add random errors to the production data). Third, we find the property field that is as close as possible to the uncalibrated realization and also honors the realization of the production data. The ensemble of realizations generated by this procedure often provides a good empirical approximation to the posteriori probability density function for reservoir models and can be used for Monte Carlo inference. We apply the above procedure to the problem of conditioning a three-dimensional stochastic model to data from two well tests. The real-field example contains two facies. Permeabilities within each facies were generated using a "cloud transform" that honored the observed scatter in the crossplot of permeability and porosity. We cut a volume, containing both test wells, from the full-field model, then scaled it up to about 9,000 cells before calibrating to pressure data. Although the well-test data were of poor quality, the data provided information to modify the permeabilities within the regions of investigations and on the overall permeability average. Introduction The problem of generating plausible reservoir models that are conditional to dynamic or production-type data has been an active area of research for several years. Existing studies can be classified by the way in which they approach three key aspects of the problem:Complexity of the stochastic geologic or petrophysical model.Method of computing pressure response from a reservoir model.Attention to the problem of sampling realizations from the a posteriori probability density function. Most researchers have worked with simple models (e.g., characterized by a variogram), an effective well-test permeability instead of a flow simulator, and largely ignored the problem of sampling. Other, more sophisticated examples include the use of a complex stochastic geologic model (channels), and simulated annealing to sample from the a posteriori probability distribution function (PDF), but an effective well-test permeability instead of pressure data (and a simulator) for conditioning.1 The works by Oliver2 and by Chu et al.3 provide other examples. In these cases, a flow simulator was used for conditioning but the geology was relatively simple and realizations were generated using a linearization approximation around the maximum a posteriori model. Landa4 treated the problem of conditioning two-dimensional channels, but chose a simple model that could be described by a few parameters. A large part of our effort has gone into ensuring that the ensemble of realizations that we generated would be representative of the uncertainty in the reservoir properties. In order to do this rigorously, we have used the actual pressure data but have had to limit ourselves to Gaussian random fields and to fairly small synthetic models. We recently applied Markov chain Monte Carlo (MCMC) methods5 to generate an ensemble of realizations because we believe they provide the best framework for ensuring that we obtain a representative set of realizations suitable for making economic decisions. The principal advantage of MCMC is that it provides a method for sampling realizations from complicated probability distributions such as the distributions of reservoirs conditional to production data. The method consists of a proposal of a new realization, and a decision as to whether to accept the proposed realization, or to again accept the current realization. The "chain" refers to the sequence of accepted realizations and "Monte Carlo" refers to the stochastic aspect in the proposal acceptance steps. Unfortunately, it appears to be impractical to use MCMC methods for generating realizations that are conditional to production data. If realizations are proposed from a relatively simple probability density function (e.g., multivariate Gaussian), then most realizations are rejected and the method is inefficient. Alternatively, if realizations are proposed from a PDF that is complicated but close to the desired PDF, the Metropolis-Hastings criterion, which involves the ratio of the probability of proposing the proposed realization to the probability of proposing the current realization, is difficult to evaluate. Oliver et al.6 proposed a methodology for incorporating production data that followed the second approach but ignored the Metropolis-Hastings criterion, instead accepting every realization. We showed that the method is rigorously valid for conditioning Gaussian random fields to linear data (i.e., weighted averages of model variables) and is easily adapted to more complex geostatistical models and types of data. Although the method is then not rigorously correct, we have shown that the distribution of realizations is good for simple, but highly nonlinear problems. The realizations generated using this methodology still honor all the data—the ensemble of realizations is, however, not a perfect representation of the true distribution even as the number of realizations becomes very large.
36
Klein, A. G. "Females in the professoriate at The University of Melbourne." Proceedings of the Royal Society of Victoria 122, no. 1 (2010): xxxi. http://dx.doi.org/10.1071/rs10009.
Full textAbstract:
For the first 120 years from its establishment in 1854 the University of Melbourne had an all-male professoriate. Personal chairs were established in 1964 in order to recognise and reward exceptionally distinguished academics that were not heads of departments; the first female professor was appointed to such a chair in 1975. The first female Departmental Head with the title of professor followed in 1979 and our guest of honour, Nancy Millis was appointed to a Personal Chair in Microbiology in 1982 – only the fourth female professor ever. This paper traces the growth in female numbers in the professoriate, which, in 2008, stood at 85 out of about 410 – that is only about 21% - but growing, as outstanding female candidates reach the required level of distinction.
37
Wang, Kainan, Jesse Lomask, and Felix Segovia. "Automatic, geologic layer-constrained well-seismic tie through blocked dynamic warping." Interpretation 5, no. 3 (August 31, 2017): SJ81—SJ90. http://dx.doi.org/10.1190/int-2016-0160.1.
Full textAbstract:
Well-log-to-seismic tying is a key step in many interpretation workflows for oil and gas exploration. Synthetic seismic traces from the wells are often manually tied to seismic data; this process can be very time consuming and, in some cases, inaccurate. Automatic methods, such as dynamic time warping (DTW), can match synthetic traces to seismic data. Although these methods are extremely fast, they tend to create interval velocities that are not geologically realistic. We have described the modification of DTW to create a blocked dynamic warping (BDW) method. BDW generates an automatic, optimal well tie that honors geologically consistent velocity constraints. Consequently, it results in updated velocities that are more realistic than other methods. BDW constrains the updated velocity to be constant or linearly variable inside each geologic layer. With an optimal correlation between synthetic seismograms and surface seismic data, this algorithm returns an automatically updated time-depth curve and an updated interval velocity model that still retains the original geologic velocity boundaries. In other words, the algorithm finds the optimal solution for tying the synthetic to the seismic data while restricting the interval velocity changes to coincide with the initial input blocking. We have determined the application of the BDW technique on a synthetic data example and field data set.
38
Kean, John. "Observing Mondellimin, or when Gerard Krefft ‘saved once more the honour of the exploring expedition’." Proceedings of the Royal Society of Victoria 121, no. 1 (2009): 109. http://dx.doi.org/10.1071/rs09109.
Full textAbstract:
The Victorian government’s expedition to the Murray river in 1857 was distinguished by the quality of images generated by its principals. Guided by the unifying vision of alexander Humboldt, William Blandowski and Gerard Krefft examined the relationship between the australians and their environment. Blandowski initiated a productive engagement with the local nyeri nyeri that yielded an unsurpassed collection of vertebrate animals endemic to the Murray-Darling Basin. Despite Blandowski’s reckless leadership and Krefft’s simmering resentment of his commander, the expedition resulted in irreplaceable data. The immediacy of Krefft’s observations offer a glimpse of mammals that have subsequently plummeted to extinction, as well as providing unique evidence of the interaction between the indigenous australians and their environment. Krefft’s images illuminate one of australia’s richest and most diverse regions at the moment of pastoral incursion. Both men were intensely aware that they had the opportunity of observing a world that was changing irrevocably in front of their eyes.
39
Ivanova, G. M. "XIX International Scientific Symposium in honor of Academician M.A. Usov ‘‘Problems of Geology and Subsurface Development’’." IOP Conference Series: Earth and Environmental Science 27 (November 10, 2015): 011001. http://dx.doi.org/10.1088/1755-1315/27/1/011001.
Full text
40
Lindsay, Everett H. "A Review of “Papers on Geology, Vertebrate Paleontology, and Biostratigraphy in Honor of Michael O. Woodburne”." Journal of Vertebrate Paleontology 30, no. 6 (December 2, 2010): 1906–7. http://dx.doi.org/10.1080/02724634.2011.522964.
Full text
41
Bear, Glenn. "Unconventional Geophysics Spring Symposium to honor Challenge Bowl founder." Leading Edge 32, no. 2 (February 2013): 226. http://dx.doi.org/10.1190/tle32020226.1.
Full text
42
Matkovskyy, О. І., H. І. Hotsanyuk, L. V. Heneralova, S. І. Tsikhon, and О. V. Shvayeskyy. "GEOLOGY SCIENTIST AND TEACHER (to the 70th anniversary of Mykola Mykolayovych Pavlun)." Geological Journal, no. 3 (September 29, 2022): 101–16. http://dx.doi.org/10.30836/igs.1025-6814.2022.3.262501.
Full textAbstract:
M. Pavlun — doctor of geological sciences, professor, dean of the geological faculty of the Ivan Franko National University of Lviv, academician of the Academy of Sciences of the Higher School of Ukraine, full member of the Ukrainian Mineralogical Society, full member of the Shevchenko Scientific Society. M. Pavlun’s systematic scientific research on metallogeny and thermobarogeochemistry (TBGC) of molybdenum-tungsten and gold ore formations served as the basis for the preparation and successful defense of a candidate’s and doctoral dissertation. For the first time, the scientist substantiated a new field of modern ore-formation and metallogenic analysis — TBGC modeling, diagnostics and forecasting of endogenous ore formations. M. Pavlun, as an administrator, performs great organizational, educational-methodical and patriotic-educational work aimed at highlighting and multiplying the achievements of the geological faculty and forming highly qualified specialists. The scientific work of M. Pavluny consists of more than 400 works, including three collective monographs and hundreds of articles, a number of reports of state-budget scientific research and contractual works, three reference and information publications for the anniversaries of the geological faculty, four textbooks, two study guides. For many years of conscientious work and significant achievements in scientific and pedagogical activity, Mykola Pavlun was awar ded with awards, distinctions and thanks, among which: a memorial sign named after A.I. Lutugin, medal of V.I. Luchytskyi, jubilee Certificate of Honor of the Presidium of the National Academy of Sciences of Ukraine, the title “Honored Education Worker of Ukraine”, Thanks from the Lviv Regional Council, Thanks from the Rector of the University. The staff of the Ivan Franko National University of Lviv, the Faculty of Geology, colleagues and friends sincerely and heartily congratulate Mykola Mykolayovych Pavlun on his 70th anniversary.
43
Duncan, Casey J., Marjorie A. Chan, Elizabeth Hajek, Diane Kamola, Nicolas M. Roberts, Basil Tikoff, and J. Douglas Walker. "Bringing sedimentology and stratigraphy into the StraboSpot data management system." Geosphere 17, no. 6 (November 1, 2021): 1914–27. http://dx.doi.org/10.1130/ges02364.1.
Full textAbstract:
Abstract The StraboSpot data system provides field-based geologists the ability to digitally collect, archive, query, and share data. Recent efforts have expanded this data system with the vocabulary, standards, and workflow utilized by the sedimentary geology community. A standardized vocabulary that honors typical workflows for collecting sedimentologic and stratigraphic field and laboratory data was developed through a series of focused workshops and vetted/refined through subsequent workshops and field trips. This new vocabulary was designed to fit within the underlying structure of StraboSpot and resulted in the expansion of the existing data structure. Although the map-based approach of StraboSpot did not fully conform to the workflow for sedimentary geologists, new functions were developed for the sedimentary community to facilitate descriptions, interpretations, and the plotting of measured sections to document stratigraphic position and relationships between data types. Consequently, a new modality was added to StraboSpot—Strat Mode—which now accommodates sedimentary workflows that enable users to document stratigraphic positions and relationships and automates construction of measured stratigraphic sections. Strat Mode facilitates data collection and co-location of multiple data types (e.g., descriptive observations, images, samples, and measurements) in geographic and stratigraphic coordinates across multiple scales, thus preserving spatial and stratigraphic relationships in the data structure. Incorporating these digital technologies will lead to better research communication in sedimentology through a common vocabulary, shared standards, and open data archiving and sharing.
44
Polat, Ali. "John Tuzo Wilson: a Canadian who revolutionized Earth Sciences." Canadian Journal of Earth Sciences 51, no. 3 (March 2014): v—viii. http://dx.doi.org/10.1139/cjes-2014-0007.
Full textAbstract:
John Tuzo Wilson (1908–1993) was one of the greatest Canadian scientists of the 20th century. His contributions to Earth Sciences, leading the formulation of the theory of plate tectonics, have revolutionized our understanding of how the planet Earth works and evolved over the past 4 billion years. This 50th anniversary special issue of the Canadian Journal of Earth Sciences is dedicated in honour of John Tuzo Wilson, who inspired tens of thousands of students all around the world to study the Earth. This special issue contains 12 papers dealing with various aspects of the “Wilson Cycle” in the geologic record, plate tectonics, mantle plumes, and how John Tuzo Wilson accepted “continental drift” and formulated the theory of plate tectonics. The contributions have mostly been made by geoscientists who directly or indirectly associated with John Tuzo Wilson and have contributed significantly to the plate tectonics paradigm.
45
Harris, Peter T., and Charitha B. Pattiaratchi. "Special issue in honour of the contribution of Michael Collins to sediment dynamics." Continental Shelf Research 29, no. 16 (September 2009): 1909–11. http://dx.doi.org/10.1016/j.csr.2009.05.008.
Full text
46
Fildani, Andrea, David J. W. Piper, and Dave Scholl. "Introduction: Exploring the deep sea and beyond: Contributions to marine geology in honor of William R. Normark." Geosphere 7, no. 2 (April 2011): 290–93. http://dx.doi.org/10.1130/ges00660.1.
Full text
47
Wallace, LM, I. Hamling, C. Holden, P. Villamor, and C. Williams. "Introduction toNZJGGspecial issue in honour of John Beavan's scientific contributions." New Zealand Journal of Geology and Geophysics 59, no. 1 (January 2, 2016): 1–4. http://dx.doi.org/10.1080/00288306.2015.1130729.
Full text
48
Jackson, M. D. D., J. R. R. Percival, P. Mostaghimi, B. S. S. Tollit, D. Pavlidis, C. C. C. Pain, J. L. M. A. L. M. A. Gomes, et al. "Reservoir Modeling for Flow Simulation by Use of Surfaces, Adaptive Unstructured Meshes, and an Overlapping-Control-Volume Finite-Element Method." SPE Reservoir Evaluation & Engineering 18, no. 02 (May 6, 2015): 115–32. http://dx.doi.org/10.2118/163633-pa.
Full textAbstract:
Summary We present new approaches to reservoir modeling and flow simulation that dispose of the pillar-grid concept that has persisted since reservoir simulation began. This results in significant improvements to the representation of multiscale geologic heterogeneity and the prediction of flow through that heterogeneity. The research builds on more than 20 years of development of innovative numerical methods in geophysical fluid mechanics, refined and modified to deal with the unique challenges associated with reservoir simulation. Geologic heterogeneities, whether structural, stratigraphic, sedimentologic, or diagenetic in origin, are represented as discrete volumes bounded by surfaces, without reference to a predefined grid. Petrophysical properties are uniform within the geologically defined rock volumes, rather than within grid cells. The resulting model is discretized for flow simulation by use of an unstructured, tetrahedral mesh that honors the architecture of the surfaces. This approach allows heterogeneity over multiple length-scales to be explicitly captured by use of fewer cells than conventional corner-point or unstructured grids. Multiphase flow is simulated by use of a novel mixed finite-element formulation centered on a new family of tetrahedral element types, PN(DG)–PN+1, which has a discontinuous Nth-order polynomial representation for velocity and a continuous (order N +1) representation for pressure. This method exactly represents Darcy-force balances on unstructured meshes and thus accurately calculates pressure, velocity, and saturation fields throughout the domain. Computational costs are reduced through dynamic adaptive-mesh optimization and efficient parallelization. Within each rock volume, the mesh coarsens and refines to capture key flow processes during a simulation, and also preserves the surface-based representation of geologic heterogeneity. Computational effort is thus focused on regions of the model where it is most required. After validating the approach against a set of benchmark problems, we demonstrate its capabilities by use of a number of test models that capture aspects of geologic heterogeneity that are difficult or impossible to simulate conventionally, without introducing unacceptably large numbers of cells or highly nonorthogonal grids with associated numerical errors. Our approach preserves key flow features associated with realistic geologic features that are typically lost. The approach may also be used to capture near-wellbore flow features such as coning, changes in surface geometry across multiple stochastic realizations, and, in future applications, geomechanical models with fracture propagation, opening, and closing.
49
Ma, Yong, Dave Hale, Bin Gong, and Zhaobo (Joe) Meng. "Image-guided sparse-model full waveform inversion." GEOPHYSICS 77, no. 4 (July 1, 2012): R189—R198. http://dx.doi.org/10.1190/geo2011-0395.1.
Full textAbstract:
Multiple problems, including high computational cost, spurious local minima, and solutions with no geologic sense, have prevented widespread application of full waveform inversion (FWI), especially FWI of seismic reflections. These problems are fundamentally related to a large number of model parameters and to the absence of low frequencies in recorded seismograms. Instead of inverting for all the parameters in a dense model, image-guided full waveform inversion inverts for a sparse model space that contains far fewer parameters. We represent a model with a sparse set of values, and from these values, we use image-guided interpolation (IGI) and its adjoint operator to compute finely and uniformly sampled models that can fit recorded data in FWI. Because of this sparse representation, image-guided FWI updates more blocky models, and this blockiness in the model space mitigates the absence of low frequencies in recorded data. Moreover, IGI honors imaged structures, so image-guided FWI built in this way yields models that are geologically sensible.
50
Horodnic, Sergiu Andrei. "Prof. dr. László RÁKOSY, Doctor Honoris Causa al Universităţii „Ştefan cel Mare” din Suceava." Bucovina Forestiera 22, no. 1 (July 29, 2022): 65–68. http://dx.doi.org/10.4316/bf.2022.007.
Full textAbstract:
Acest eseu constă în Laudatio prezentat la festivitatea decernării titlului de Doctor Honoris Causa al Universității „Ștefan cel Mare” din Suceava, profesorului László Rákosy, distins reprezentant al Facultății de Biologie și Geologie din cadrul Universității Babeș-Bolyai din Cluj Napoca. Motivația acestui eveniment special a fost recunoașterea a tot ceea ce a făcut pentru susținerea învățământului superior ecologic din Bucovina. Opera sa științifică, care cuprinde un număr impresionant de comunicări, articole, tratate în domeniul entomologiei, ecologiei și protecției naturii, îi conferă profesorului Rákosy un prestigiu deosebit în cercetarea științifică românească și internațională, fiind dovada unei munci tenace, pasionate, neîntrerupte. Prin construcția sa sufletească şi prin educația sa, profesorul László Rákosy a reușit să coaguleze entomologi din țară în cadrul Societății Române de Lepidopterologie și să pună bazele unei puternice echipe de cercetare în entomologie, ecologie și protecția mediului.