Дисертації з теми "Geology, stratigraphic – Maine"
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Hogan, John Patrick. "Mineralogical, chemical and isotopic diversity in plutonic rock suites from the Coastal Maine Magmatic Province : the role of source region heterogeneity, tectonic setting and magmatic processes /." This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-08082007-114045/.
Повний текст джерелаHogan, John Patrick. "Mineralogical, chemical and isotopic diversity in plutonic rock suites from the Coastal Maine Magmatic Province:the role of source region heterogeneity, tectonic setting and magmatic processes." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39074.
Повний текст джерелаPh. D.
Lee, Kristen M. "Late Quaternary Sea-Level Lowstand Environmetns and Chronology of Outer Saco Bay, Maine." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/LeeKM2006.pdf.
Повний текст джерелаMetcalfe, Elisabet Joan. "Late-glacial through Holocene Stratigraphy and Lake-level Record of Rangely Lake, Western Maine." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/MetcalfeEJ2007.pdf.
Повний текст джерелаGuzmán, Espinal José Ignacio. "Miocene stratigraphy and depositional framework of northeastern Maracaibo Basin, Venezuela : implications for reservoir heterogeneity prediction in tectonically-active settings /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаFang, Qing. "Biostratigraphic and sequence stratigraphic analysis of the Yegua Formation, Houston salt embayment, northern Gulf of Mexico /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаRougvie, James Russell. "Metamorphism in the northern Park Range of Colorado : fluid-rock interactions and thermobarometry /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаLiu, Qunling. "Post mid-Cretaceous sequence stratigraphy and depositional history of northeastern Gulf of Mexico /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаAbbott, James T. "Late Quaternary alluviation and soil erosion in Southern Italy /." Digital version accessible at:, 1997. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаRodriguez, Luis Oswaldo. "Tectonic analysis, stratigraphy and depositional history of the Miocene sedimentary section, Central Eastern Venezuela basin /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаDubois, Kalli Alyse. "Regional Stratigraphy and Lithologic Characterization of the Tuscaloosa Marine Shale in Southwest Mississippi." Thesis, Mississippi State University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10843538.
Повний текст джерелаThe Tuscaloosa Marine Shale (TMS) in southwest Mississippi and south-central Louisiana has potential to become a prolific source of fossil fuels using hydraulic fracturing technology. The objective of this study is to better understand the sequence and regional stratigraphy, lithology, and character of the TMS. Studying the TMS’s lithologic, depositional, and diagenetic properties is essential to maximize potential production. Characterization of the eastern TMS was performed with cuttings from two wells provided by the Mississippi Oil and Gas Board through MDEQ, and two provided by the USGS. Thirty-one petrophysical logs were correlated, to make cross sections and trace sequence stratigraphic intervals within the TMS. Results of the study showed lithologic variability and compaction across the study area, and a sequence stratigraphic correlation of the highstand systems track between the Tuscaloosa and Eagle Ford Groups. This research aims to work toward the greatest potential of the TMS as an unconventional reservoir.
Hudley, Joel Wayne. "Sedimentologic and geophysical study of the stratigraphy and development of modern carbonate Islands, Cotton Key, Florida." Diss., Online access via UMI:, 2006.
Знайти повний текст джерелаChan, Sik-lap Jacky. "Paleocene deep-marine sediments in southern central Tibet indication of an arc-continent collision /." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38925862.
Повний текст джерелаChan, Kin-chung. "The application and significance of sediment colour intensity on the study of offshore quaternary deposits." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B42577202.
Повний текст джерелаHamlin, Herbert Scott. "Syn-orogenic slope and basin depositional systems, Ozona sandstone, Val Verde Basin, southwest Texas /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаMeldahl, Keith Heyer. "Paleoenvironmental and stratigraphic implications of taphonomic processes: Case studies from Recent and Pleistocene shallow marine environments." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185114.
Повний текст джерелаMulder, Richard Alan. "Regional tectonic deformation of the northern Oregon coast as recorded by Pleistocene marine terraces." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4433.
Повний текст джерелаRunds, Megan Jean. "Sedimentology and depositional environment of a marine target, Southern Namibia: 3D stratigraphic architecture and diamond mineralisation potential." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28120.
Повний текст джерелаStukins, Stephen. "Spatial and temporal palynological trends in marginal marine depositional system : Lajas Formation, Neuquén Basin, Argentina." Thesis, University of Aberdeen, 2011. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=167073.
Повний текст джерелаMok, Wing-yan Connie. "Integrated sedimentological, geophysical and geotechnical study of inner shelf sediments in Hong Kong." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B35675172.
Повний текст джерелаRoss, Marcus R. "Richness trends of mosasaurs (diapsida, squamata) during the late Cretaceous /." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/dlnow/3248241.
Повний текст джерелаMok, Ka-man, and 莫嘉敏. "[Delta]¹³C as a palaeo-environmental indicator in a sediment core fromHong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49770470.
Повний текст джерелаpublished_or_final_version
Applied Geosciences
Master
Master of Science
Murray-Wallace, Colin Vincent. "Evaluation and application of the amino acid racemisation reaction in studies of quaternary coastal and marine sediments in Australia /." Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phm9848.pdf.
Повний текст джерелаHoffman, Cory Lane. "Evidence for Milankovitch orbital forcing in the Cretaceous upper Glen Rose Formation of the East Texas Basin and the Fort Terrett Formation of the Central Texas platform /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаVita. Five folded charts in pocket. Includes bibliographical references (leaves 316-324). Available also in a digital version from Dissertation Abstracts.
Young, Elisa Joanna. "Mass-dependent and mass-independent sulfur isotope fractionation in precambrian sediments as a key to early atmospheric and oceanic evolution /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19447.pdf.
Повний текст джерелаDavis, Laurence H. M. "Allostratigraphic interpretation of a modern coarse clastic barrier complex : depositional facies, processes and relative sea level relationships /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,60897.
Повний текст джерелаStritch, Rebecca A. (Rebecca Ann) Carleton University Dissertation Earth Sciences. "Early Cretaceous (Albian) foraminifera in Northwestern and Central Alberta, Canada; biostratigraphy and paleoenvironmental changes." Ottawa, 1997.
Знайти повний текст джерелаCrerar, Erin Elizabeth. "Sedimentology and stratigraphic evolution of a tidally influenced marginal-marine complex: The Lower Cretaceous McMurray Formation, Athabasca oil sands deposit, northeastern Alberta." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26464.
Повний текст джерелаLi, Bo. "Tidal channel meandering and salt marsh development in a marine transgressed incised valley system the Great Marsh at Lewes, Delaware /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 710 p, 2006. http://proquest.umi.com/pqdweb?did=1208133431&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаGrasby, Stephen E. (Stephen Edward). "Stratigraphy of the Miette group and tectonic history of the southern Selwyn Range, western Main Ranges, British Columbia." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60512.
Повний текст джерелаStructures in the southern Selwyn Range developed during three main phases of deformation. The Fraser River Antiform, the dominant structure, formed during D$ sb2$. The Selwyn Range Fault cross-cut the earlier Fraser River Antiform during early D$ sb3$. The Fraser River Antiform tightened during late D$ sb3$, when the Selwyn Range Fault was reactivated, forming a 100m thick shear zone. The Chatter Creek Fault (D$ sb3$ or latter) has compressional and dextral motion, both with minor displacement.
Metamorphism was initiated during D$ sb2$ and peaked during D$ sb3$.
Luca, Pedro Henrique Vieira de 1983. "Processos de transporte e deposição de material clástico em sistemas depocisionais costeiro e de plataforma marinha dominados por ondas (formações Lagarto e Palmares, Brasil e Formação Punta Negra, Argentina)." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287329.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Instituto de Geociências
Made available in DSpace on 2018-08-24T01:34:47Z (GMT). No. of bitstreams: 1 Luca_PedroHenriqueVieirade_D.pdf: 18777385 bytes, checksum: c055caccb8a267d7dde58a2477d6acb9 (MD5) Previous issue date: 2013
Resumo: As formações Lagarto e Palmares (Cambriano-Ordoviciano, Domínio Estância) e a Formação Punta Negra (Devoniano, Precordilheira Argentina) representam unidades sedimentares antigas desenvolvidas em ambientes marinhos costeiros e plataformais dominados pela ação de ondas de tempestades. Nesta tese de Doutorado, estudaram-se depósitos de tempestade formados em uma área de intermaré (formações Lagarto e Palmares) e depósitos de tempestade desenvolvidos abaixo da linha de tempo bom em uma área de prodelta (Formação Punta Negra). As formações Lagarto e Palmares se desenvolveram em uma área de planície de maré aberta em que os processos sedimentares de maré e de tempestade interagiram entre si na distribuição de sedimentos de áreas costeiras até antepraia. Um detalhado estudo de análise de fácies foi utilizado para reconhecer e caracterizar as litofácies e os elementos arquiteturais, gerar um modelo de deposição para estas unidades e para discutir os fatores de geração e preservação das HCS em água rasa. Baseando-se na organização arquitetural dos depósitos sedimentares, construiu-se um modelo de distribuição de sedimento em que há uma passagem gradativa das áreas proximais de intermaré superior, dominadas por processos de maré e predomínio de sedimentos nas frações silte e argila, para as porções distais de intermaré inferior, em que prevalecem sedimentos arenosos e depósitos de tempestade. A Formação Punta Negra constitui uma espessa unidade sedimentar formada pela intercalação entre camadas areníticas e pelíticas. Por muitos anos esta unidade foi interpretada como um sistema deposicional marinho profundo produto de uma sedimentação gerada por fluxos turbidíticos. Contudo, neste trabalho esta unidade foi reinterpretada como um sistema deposicional de prodelta dominado pela atividade de ondas de tempestade. Uma análise de detalhe dos depósitos sedimentares permitiu identificar as principais fácies sedimentares, icnofácies e elementos arquiteturais e gerar um novo modelo de deposição para esta unidade. Construiu-se um modelo de sedimentação para esta unidade em que os depósitos se desenvolveram a partir da interação entre fluxos hiperpicnais gerados à frente de um sistema deltaico e fluxos oscilatórios de alta energia decorrentes de eventos de tempestade. Estes fluxos combinados possuíam direção perpendicular à paleolinha de costa, e perdiam energia no tempo e no espaço (costa afora). Os depósitos com maior granulometria, representados por areia média média-fina, são encontrados nas porções mais proximais e os sedimentos mais finos, representados por corpos pelíticos-arenosos, se concentram principalmente nas áreas distais do sistema deposicional
Abstract: Lagarto and Palmares formations (Ordovician-Cambrian, Estância Domain) and the Punta Negra Formation (Devonian, Argentine Precordillera) represent ancient sedimentary units developed in costal and platform storm dominated marine environments. In this PHD thesis, it was studied shallow water storm deposits developed in an intertidal area (Lagarto and Palmares formations) and storm deposits developed below the fair water wave base in an prodelta area (Punta Negra Formation). Lagarto and Palmares formations have been developed in an open coast tidal flat where the tidal and storm sedimentary processes have interacted to distribute sediments from the coast till the shoreface. Detailed facies analysis was used to recognize and characterize the lithofacies and architectural elements, define a depositional model e the controlling factors that preserved HCS in shallow-water. Based in the depositional architectural organisation, it was proposed a sedimentary distribution model in which there is a gradational transition between the proximal areas of upper intertidal, dominated by tidal processes and silty and shaly sediments, and the distal areas of lower intertidal, in which prevails sandy sediments and storm deposits. Punta Negra Formation constitutes a thick unit composed of monotonous interbeds of sandstone and sandy mudstone. This unit was previously interpreted as a deep water depositional system, however in this research it was reinterpreted as a storm dominated prodeltaic system. Detailed analysis of the sedimentary deposits allowed identifying the main sedimentary facies, ichnofacies and architectural elements and propose a new depositional model for this unit. It was built a sedimentary model in which the Punta Negra Formation deposits have been produced by combined and oscillatory flows which resulted by the combination of hyperpicnal flows and storm waves. The generated combined flows had a direction perpendicular to the paleocoast and were characterized by losing energy in the time and space (seawards). Coarser grained sediments, represented by medium size sand, are found in the proximal area and the finer grained sediments are mainly found in the most distal areas of the sedimentary system
Doutorado
Geologia e Recursos Naturais
Doutor em Ciências
Hanson, Lindley S. "Stratigraphy of the Jo-Mary Mountain area: with emphasis on the sedimentary facies and tectonic interpretation of the Carrabassett Formation." Thesis, Boston University, 1988. https://hdl.handle.net/2144/37160.
Повний текст джерелаPLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
The sedimentary facies of the Upper Silurian and Lower Devonian Madrid, Carrabassett, and Seboomook Formations, exposed on the northwestern limb of the Kearsarge-Central Maine Synclinorium, belong the following facies categories: (1) sandstone-rich turbidites, (2) pelitic turbidites and related hemipelagites, and (3) disrupted facies. Lithofacies within each formation are organized into one or more descriptive facies associations--these are the: (1) massive sandstone, (2) thickbedded turbidite, (3) thin-bedded turbidite, (4} chaotic, (5) massive-pelite, and (6) laminated-pelite facies associations. Where strata are well exposed, and sedimentary structures and bed geometries are discernible, these descriptive facies can be discussed in terms of one or more interpretive associations (e .g. channel and channel-margin facies associations.) The Devonian Carrabassett Formation is the youngest widespread formation exposed in the Kearsarge - Central Maine Synclinorium. In the Jo-Mary Mountain quadrangle and surrounding area, the Carrabassett Formation is a complex facies assemblage dominated by fine-grained turbidite and chaotic facies. The underlying Upper Silurian Madrid Formation is composed largely of sandstone- and siltstone-rich turbidites. The younger Seboomook Formation is characterized by pelitic turbidite and related hemipelagic facies. A facies analysis of the Carrabassett and underlying Madrid Formations indicates that sediments were derived from eastern sources and deposited in northwesterly-migrating slope and foredeep environments during the Late Silurian and Early Devonian. Sedimentation is believed to have been partly diachronous, becoming progressively younger toward the northwest. Short term penecontemporaneous deposition probably occurred in different settings, such as along the axis of the foredeep basin (Madrid Fm.) and lower- to base-of-slope environment (Carrabassett Fm.). Olistostromes, shed from the lower slope, and thir bedded turbidites dominated later stages of basin sedimentation when the source of coarse clastics, supplied from the northeast, was shut off during the Early Devonian. These environments are interpreted in terms of an accretionary complex contemporaneous with initial stages of compression during the Acadian orogeny.
2031-01-01
BARTHOLOMEW, ALEXANDER. "CORRELATION OF HIGH ORDER CYCLES IN THE MARINE-PARALIC TRANSITION OF THE UPPER MIDDLE DEVONIAN (GIVETIAN) MOSCOW FORMATION, EASTERN NEW YORK STATE." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1022593337.
Повний текст джерелаChan, Kin-chung, and 陳健忠. "The application and significance of sediment colour intensity on the study of offshore quaternary deposits." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B42577202.
Повний текст джерелаBusson, Jean. "Caractérisation et modélisation numérique des transferts gravitaires de la plate-forme au bassin en contexte carbonate." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0406/document.
Повний текст джерелаThis PhD thesis focuses on the controls of the gravitational processes transferring the carbonate production of the platform towards the basins. This work consists in 1) a geological synthesis of the gravity-driven sedimentation in carbonate systems and a typology of favorable configurations for the distal transfer of coarse material 2) an innovative numerical modeling workflow combining the forward stratigraphic modeling and the computation of the mechanical stratigraphy. It estimates the instability mechanisms during the evolution of the system. This work is based on two Plio-Quaternary analog cases: The Great Bahama Bank (GBB) Western leeward slope and the Exuma Sound/San Salvador deep basin and major canyon system, which constitutes an exceptional conduit of distal transport of carbonate sands to the abyssal plain. A common characterization of gravitational transfer processes was established for these two zones. Oedometer and triaxial tests were conducted for the determination of geomechanical parameters of the sediments. The numerical modeling workflow was applied to a 2D transect of the western slope of the GBB over the 1.7-0 Ma interval. It precises the progradation mechanism of the leeward margin related to the development of marginal cemented lowstand wedges. The modeling of the mechanical stratigraphy underlines the control of the gravitational instabilities by the geometry of the platform and fluid overpressures. The latter develop under the effect of transient piezometric head in the emerged platform, promoting the destabilization of the platform margin
Chan, Sik-lap Jacky, and 陳式立. "Paleocene deep-marine sediments in southern central Tibet: indication of an arc-continent collision." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38925862.
Повний текст джерелаMcArthur, Adam D. "Temporal and spatial relationships of syn-rift, deep-marine hangingwall stratigraphy : examples from the Upper Jurassic of the Inner Moray Firth and the Central North Sea." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=191932.
Повний текст джерелаMoros, León Josè Saul. "Reservoir geometry and architecture in Ordovican fluvio-marine sandstones : P3B unit, Pacoota formation, Amadeus Basin, Central Australia." Thesis, Queensland University of Technology, 1998. https://eprints.qut.edu.au/37017/1/37017_Moros%20Leon_1998_v1.pdf.
Повний текст джерелаHayward, Nathan. "Marine geophysical study of the Eurasian-African plate boundary in the vicinity of Gorringe Bank." Thesis, University of Oxford, 1996. http://ora.ox.ac.uk/objects/uuid:e2ca90ad-c2e3-4495-97da-f5cc8bcf1e74.
Повний текст джерелаChiti, Bernardo. "Holocene fluvial and marine influences and settlement interactions in the lower Ribble Valley, Lancashire, U.K." Thesis, University of Stirling, 2004. http://hdl.handle.net/1893/1805.
Повний текст джерелаStretch, Gordon W. "The southern termination of the Main Ranges and Western Ranges of the southern Canadian Rocky Mountains, stratigraphy, structural geology, and tectonic implications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20704.pdf.
Повний текст джерелаFeser, Kelsey M. "Utilizing the Subfossil Record of Seagrass-Associated Mollusks to Reveal Recent Changes in Coastal Marine Environments." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439304534.
Повний текст джерелаRanson, Andrew M. "Transitional Facies and Sequence Stratigraphic Complexity of Shallow-Marine Star Point Formation to Coastal-Plain Blackhawk Formation Along Depositional-Strike, Wasatch Plateau, Utah." ScholarWorks@UNO, 2012. http://scholarworks.uno.edu/td/1476.
Повний текст джерелаMok, Wing-yan Connie, and 莫穎恩. "Integrated sedimentological, geophysical and geotechnical study of inner shelf sediments in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B35675172.
Повний текст джерелаUdgata, Devi Bhagabati Prasad. "DEPOSITIONAL AND STRATIGRAPHIC SIGNIFICANCE OF MARINE, GREEN-CLAY, MINERAL FACIES IN THE LOWER-MIDDLE MISSISSIPPIAN BORDEN AND FORT PAYNE FORMATIONS, WESTERN APPALACHIAN AND EASTERN ILLINOIS BASINS, KENTUCKY." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/808.
Повний текст джерелаMegner-Allogo, Alain-Cedrique. "Sedimentology and stratigraphy of deep-water reservoirs in the 9A to 14A Sequences of the central Bredasdorp Basin, offshore South Africa." Thesis, Stellenbosch : Stellenbosch University, 2006. http://hdl.handle.net/10019.1/17400.
Повний текст джерелаENGLISH ABSTRACT: The Barremian to Albian siliciclastic deep-water deposits of the central Bredasdorp Basin were investigated primarily in terms of their stratigraphic evolution, depositional characteristics and facies distribution. Cores from the deep-water deposits reveal that the facies successions are composed of massive, ripple cross- to parallel-laminated sandstones, conglomerate, massive claystone, alternating laminated to interbedded sandstone/siltstone and claystone, laminated and clay-rich siltstone. These facies are grouped into channel-fill, sheet-lobe, overbank and basin plain deposits, by inference. The application of sequence stratigraphy, based on gamma ray and resistivity log patterns, reveals that all 3rd-order depositional sequences comprise 4thorder cycles. The latter are subdivided into three components (lowstand, transgressive and highstand systems tracts), based on vertical facies changes and internal stratigraphic key surfaces. Taking the 13Amfs as the stratigraphic datum for each well, correlation was possible on a regional basis. Lowstand deposits, comprising thick amalgamated massive sandstones, were interpreted to represent channelfills. Their vertical and horizontal stacking forms channel-fill complexes above Type 1 unconformities. Adjacent thin-bedded intervals, comprising parallel- to ripple cross-laminated sandstones, were interpreted as levee/overbank deposits, whereas clay-rich intervals were interpreted to represent basin plain deposits of hemipelagic origin. Facies associations and their distribution have revealed that channel-fills are associated with overflow deposits and sheet sand units. These deposits, as well as downdip sheet sands associated with small channel-fills within the 9A, 11A/12A, 13A Sequences and the 14A Sequence were interpreted to have been deposited in a middle fan to upper fan setting. A similar association occurs in the 10A Sequence, except that thick conglomerate units are present at the base of proximal channel-fills. This led to interpret the 10A Sequence as being deposited in a base-of-slope to upper fan setting. The thickness of each sequence, as revealed by isochore maps, shows sinuous axial flow path which corresponds to channel-fill conduit. The continuous decrease of this sinuosity upward in the succession was interpreted as being related to basin floor control along the main sand fairways. Successive flows result in erosion-fill-spill processes, which locally favour connectivity of reservoirs over large areas. Recognition of higher-order sequences and key stratigraphic surfaces helps to understand internal stratigraphic relationships and reveals a complex and dynamic depositional history for 3rd-order sequences. However, sparse well control and uneven distribution of boreholes, as well as lack of seismic and other data, limited the models derived for this study.
AFRIKAANSE OPSOMMING: Die Barremiaanse tot Albiaanse silisiklastiese diepwater afsettings van die sentrale Bredasdorp Kom is hoofsaaklik in terme van stratigrafiese evolusie, afsettingskarakteristieke en fasies distribusie ondersoek. Kerne van die diepwater afsettings toon dat die fasies opeenvolgings uit massiewe, riffelkruis- tot parallel-gelamineerde sandstene, konglomerate, massiewe kleistene, afwisselende gelamineerde tot intergelaagde sandstene/slikstene en kleistene, sowel as gelamineerde en klei-ryke slikstene bestaan. Hierdie fasies word onderverdeel in kanaalopvulsel, plaatlob, oewerwal en komvlakte afsettings. Die toepassing van opeenvolgingsstratigrafie gebaseer op gammastraal en resistiwiteit log patrone toon dat alle 3de-orde afsettingsopeenvolgings uit 4deorde siklusse bestaan. Laasgenoemde word onderverdeel in drie komponente (lae-stand, transgressie en hoë-stand sisteemgedeeltes), gebaseer op vertikale fasies veranderinge en interne stratigrafiese sleutel vlakke. Korrelasie op ‘n regionale basis is moontlik gemaak deur die 13Amfs as die stratigrafiese verwysing vir elke boorgat te neem. Lae-stand afsettings, wat uit dik saamgevoegde massiewe sandstene bestaan, word geïnterpreteer as kanaalopvulsels. Die vertikale en horisontale stapeling van die sandstene vorm kanaalopvulsel komplekse bo Tipe 1 diskordansies. Naasliggende dungelaagde intervalle, wat uit parallel- tot kruisgelaagde sandstene bestaan, word geïnterpreteer as oewerwal afsettings, terwyl klei-ryke intervalle geïnterpreteer word as verteenwoordigend van komvlakte afsettings van hemipelagiese oorsprong. Fasies assosiasies en hul verspreiding toon dat kanaalvul geassosieër word met oorvloei afsettings en plaatsand eenhede. Hierdie afsettings, sowel as distale plaatsande geassosieër met klein kanaalopvulsels binne die 9A, 11A/12A, 13A en die 14A Opeenvolgings, word geïnterpreteer as afgeset in ‘n middelwaaier tot bo-waaier omgewing. ‘n Soortgelyke assosiasie bestaan in die 10A Opeenvolging, behalwe dat dik konglomeraat eenhede teenwoordig is by die basis van proksimale kanaalopvullings. Dit het gelei tot die interpretasie van die 10A Opeenvolging as afgeset in ‘n basis-van-helling tot bo-waaier omgewing. Die dikte van elke opeenvolging, soos verkry vanaf isochoor kaarte, toon ‘n kronkelende aksiale vloeipad wat ooreenkom met ‘n kanaalopvulling toevoerkanaal. Die aaneenlopende afname van hierdie kronkeling na bo in die opeenvolging word geïnterpreteer as verwant aan komvloer-beheer langs die hoof sand roetes. Opeenvolgende vloeie veroorsaak erosie-opvul-oorspoel prosesse, wat lokaal die konnektiwiteit van reservoirs oor groot areas bevoordeel. Herkenning van hoër-orde opeenvolgings en sleutel stratigrafiese vlakke dra by tot ‘n goeie begrip van die interne stratigrafiese verhoudings en ontbloot ‘n komplekse en dinamiese afsettingsgeskiedenis vir 3de-orde opeenvolgings. Beperkte boorgatbeheer en ‘n tekort aan seismiese en ander data het egter ‘n beperkende rol gespeel in die daarstel van modelle vir hierdie studie.
Nicholl, Joseph Anthony Leo. "Changes in ice sheet dynamics across the mid-Pleistocene transition recorded in North Atlantic sediments." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648858.
Повний текст джерелаCoskun, Tunaboylu Burcu. "Sedimentary Cyclicity And Micropaleontological Investigations In The Upper Triassic Shallow Marine Carbonate Successions (central And Western Taurides, Turkey)." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609338/index.pdf.
Повний текст джерелаAl-Ramadan, Khalid. "Impact of Diagenetic Alterations on Reservoir Quality and Heterogeneity of Paralic and Shallow Marine Sandstones : Links to Depositional Facies and Sequence Stratigraphy." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6928.
Повний текст джерелаThis thesis constrains the distribution of diagenetic alterations and their impact on reservoir-quality and heterogeneity evolution pathways in relation to depositional environments and sequence stratigraphy (systems tracts and key sequence stratigraphic surfaces) of four selected paralic and shallow marine siliciclastic successions.
Typical eogenetic alterations encountered include the dissolution and kaolinitization of framework silicates, which are closely associated to shoreface facies of forced regressive systems tract (FRWST), lowstand systems tract (LST), upper part of the highstand systems tract (HST), and below the sequence boundary (SB). These alterations are attributed to incursion of meteoric water owing to rapid and considerable fall in the relative sea level. Extensive carbonate cementation is most evident below marine and maximum flooding surfaces (MFS), whereas dissolution of carbonate cement and detrital dolomite occur in LST, HST and below SB. Parameters controlling the patterns and texture (microcrystalline vs. poikilotopic) of calcite cement have been constrained within sequence stratigraphic framework of the sandstones. Coarse crystalline to poikilotopic calcite textures of meteoric water origin are thus closely linked to the FRWST, LST and upper part of the HST sandstones and occur mainly as stratabound concretions, whereas microcrystalline calcite, which was precipitated from marine porewaters, occurs as continuously cemented layers in the transgressive systems tract (TST) and lower part of the HST sandstones.
Eogenetic alterations impose, in turn, profound control on the distribution pattern of mesogenetic alterations, and hence on reservoir quality evolution (destruction vs. preservation) pathways of sandstones. Eogenetic infiltrated clays, which occur in the tidal estuarine TST and HST sandstones, have helped preserving porosity in deeply buried sandstone reservoirs (≈ 5 km) through inhibition of extensive cementation by quartz overgrowths. Other essential findings of this thesis include deciphering the control on the formation of authigenic illite and chlorite by ultra-thin (≤ 1 µm thick), grain-coating clay mineral substrate.
Hlal, Osama Ahmed. "Diagenesis and Reservoir-Quality Evolution of Paralic, Shallow Marine and Fluvio-lacustrine Deposits : Links to Depositional Facies and Sequence Stratigraphy." Doctoral thesis, Uppsala universitet, Berggrundsgeologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8986.
Повний текст джерела