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Academic literature on the topic 'Cenozoic'

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Published: 4 June 2021
Last updated: 4 May 2024

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Journal articles on the topic "Cenozoic"

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BERGGREN, WILLIAM A., DENNIS V. KENT, JOHN J. FLYNN, and JOHN A. VAN COUVERING. "Cenozoic geochronology." Geological Society of America Bulletin 96, no. 11 (1985): 1407. http://dx.doi.org/10.1130/0016-7606(1985)96<1407:cg>2.0.co;2.

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Sanfilippo, Annika. "Cenozoic Radiolaria." Short Courses in Paleontology 8 (1995): 61–79. http://dx.doi.org/10.1017/s2475263000001422.

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Radiolarians are marine zooplankton possessing a tough, central capsular membrane that divides the cytoplasm into intracapsular (containing the nucleus, organelles, and food reserves) and extracapsular (with food-gathering rhizopodia and digestive vacuoles) portions (Figure 1). They bear two kinds of pseudopodia, the axopodia and filopodia. The axopodia extend radially through the ectoplasm and capsular membrane to the interior of the endoplasm. The axopodia are inserted into a special structure, the axoplast (Figure 1). The development of the axoplast and its complex is of fundamental importance in radiolarian taxonomy. For a detailed description of radiolarian cytology, biology, and reproduction, see Anderson (1983).
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Bose, Kanishka, Shiladri S. Das, and Subhronil Mondal. "An updated generic classification of Cenozoic pleurotomariid gastropods, with new records from the Oligocene and early Miocene of India." Journal of Paleontology 95, no. 4 (March 3, 2021): 763–76. http://dx.doi.org/10.1017/jpa.2021.4.

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AbstractAlthough taxonomically distinct, the Cenozoic pleurotomariids are the bottlenecked remnants of the Mesozoic members of the family in terms of morphology, with only conical forms surviving the end-Cretaceous mass extinction. Here, we propose an updated classification scheme for the Cenozoic representatives of this group, based on data from the entire Cenozoic pleurotomariid fossil record. We consider all conventional as well as several new characters so that this scheme can readily help to distinguish Cenozoic pleurotomariid genera. Following the new classification scheme, a revision of the generic status of Cenozoic species previously assigned to ‘Pleurotomaria’ Defrance, 1826 is presented.Only a few Cenozoic pleurotomariid gastropods have been reported from the Indian subcontinent. Here we report four species from the Oligocene of the Kutch Basin and the early Miocene (Burdigalian) of the Dwarka Basin of Gujarat, western India, of which two are described as new: Perotrochus bermotiensis n. sp., Entemnotrochus kathiawarensis n. sp., Entemnotrochus cf. E. bianconii, and Entemnotrochus? sp. 1.UUID: http://zoobank.org/89b6ff67-2834-477f-862b-67691104aca4
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Fluegeman, Richard H. "Unresolved issues in Cenozoic chronostratigraphy." Stratigraphy 4, no. 2-3 (2007): 109–16. http://dx.doi.org/10.29041/strat.04.2.04.

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Cenozoic chronostratigraphy has been an active area of research over the past 50 years. The expanding search for energy and the development of international scientific drilling have resulted in a wealth of stratigraphic data. Many issues in Cenozoic chronostratigraphy, however, remain unresolved. For example, of the 18 recognized stages within the Cenozoic, only 9 have a ratified Global Stratotype Section and Point (GSSP). Only the Pliocene Series has all of its component stages defined by GSSPs. Good progress has been made on the remaining 9 stages. Almost all have guide events identified which should serve for correlation and many have candidate sections which may serve as GSSPs. The outlook is good for the ratification of all Cenozoic GSSPs within several years but the target date of 2008 may be too optimistic. At least three other unresolved issues dealing with Cenozoic chronostratigraphy need further discussion and research. They include the status and chronostratigraphic rank of the Tertiary, the stage nomenclature at the Paleocene-Eocene boundary, and the “decapitation” of the historic Priabonian Stage. The unresolved GSSPs represent an immediate concern. The stability of correlations within the Cenozoic depends on the establishment and maintenance of GSSPs. Future work on Cenozoic Earth history will be enhanced by the completion of this task.
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Genshaft, Yu S., and A. Ya Saltykovskiy. "Mongolia Cenozoic volcanism." Russian Journal of Earth Sciences 2, no. 2 (September 15, 2000): 153–83. http://dx.doi.org/10.2205/2000es000038.

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KIESSLING, W., D. LAZARUS, and U. ZELLER. "Mesozoic–Cenozoic bioevents." Palaeogeography, Palaeoclimatology, Palaeoecology 214, no. 3 (November 18, 2004): 179–80. http://dx.doi.org/10.1016/s0031-0182(04)00419-5.

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Pimm, S. "ECOLOGY: Cenozoic Dramas." Science 292, no. 5523 (June 8, 2001): 1841–43. http://dx.doi.org/10.1126/science.1061184.

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Sirenko, Olena A., and Olena A. Shevchuk. "Levels of changes in the genus Pinus Linné in the composition of Mesozoic and Cenozoic flora and vegetation as an additional criterion for the division of sediments by the Mesozoic and Cenozoic of Ukraine." Journal of Geology, Geography and Geoecology 30, no. 4 (December 27, 2021): 741–53. http://dx.doi.org/10.15421/112168.

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The article presents an analysis of a large array of results of palynological studies of Mesozoic and Cenozoic sediments of Ukraine and adjacent regions of Belarus and Russia. Numerous literature data on the palynological characteristics of Meso-Cenozoic sediments and the materials of the authors are summarized according to the results of spore-pollen analysis of Mesozoic and Cenozoic sediments within the main tectonic structures of Ukraine. It has been established that the genus Pinus (Pinaceae) is an integral part of the Meso-Cenozoic flora of Ukraine. Although, the participation in the flora and vegetation of the genus Pinus and its species diversity in different periods of geological time were different. Despite the long history and significant achievements of palynological research of Meso-Cenozoic sediments of Ukraine, no attention has been paid to the historical aspect of Pinus development in the Meso-Cenozoic flora. This work is presented as the first stem to fill this gap. The genus Pinus has a large stratigraphic range, but its species diversity and quantitative changes in the composition of Mesozoic and Cenozoic flora of different ages are markedly different. The analysis of these changes made it possible to trace the emergence and main levels at which the species composition was renewed and the role of Pinus in flora increased during the Mesozoic and Cenozoic. According to the results of the research, 5 levels of increasing the participation of the genus Pinus and changes in its species affiliation in the Mesozoic flora were established: Aalenian period of the Middle Jurassic (appearance of the first representatives of Pinus); Oxfordian time of the Late Jurassic; Valanginian – Early Barremian times of the Early Cretaceous; Albian time of the Early Cretaceous; Late Campanian time of the Late Cretaceous. 5 levels of increasing the role of Pinus and its species diversity for the flora and vegetation of the Cenozoic were also established: Oligocene time of the Paleogene, Konkian-early Sarmatian time of the Middle Miocene; early Pontian (Ivankov) time of the Late Miocene; early Kimmerian time (early Sevastopol) of the Early Pliocene and Martonosha time of the Early Neopleistocene. Certain levels have been traced for the similar age of Cenozoic flora of Belarus and Russia.
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Hendy, Austin J. W. "The influence of lithification on Cenozoic marine biodiversity trends." Paleobiology 35, no. 1 (2009): 51–62. http://dx.doi.org/10.1666/07047.1.

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Recent research has corroborated the long-held view that the diversity of genera within benthic marine communities has increased from the Paleozoic to the Cenozoic as much as three- to fourfold, after mitigating for such biasing influences as secular variation in time-averaging and environmental coverage. However, these efforts have not accounted for the considerable increase in the availability of unlithified fossiliferous sediments in strata of late Mesozoic and Cenozoic age. Analyses presented here on the Cenozoic fossil record of New Zealand demonstrate that unlithified sediments not only increase the amount of fossil material and hence the observed diversity therein, but they also preserve a pool of taxa that is compositionally distinct from lithified sediments. The implication is that a large component of the difference in estimates of within-community diversity between Paleozoic and Cenozoic assemblages may relate to the increased availability of unlithified sediments in the Cenozoic.
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Zhou, Tian Wei, Ze Hong Cui, Hai Hui Ming, Hai Long Xu, and Yu Xia Xin. "Late Cenozoic Faults and Shallow Oil Accumulation in the Nanpu Sag." Advanced Materials Research 734-737 (August 2013): 129–34. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.129.

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The Nanpu Sag, located in the north part of Huanghua Depression of Bohai Bay Basin, is a Cenozoic petroliferous extensional sag, the shallow oil reservoirs have great exploration potential. Former exploration suggested that there is complex relationship between Late cenozoic faults and hydrocarbon accumulation, but there is no detailed discussion. Based on the structural interpretation of 3D seismic data, the Late Cenozoic fault characters including typical fault configuration in profile and fault arrays in plane are analyzed, furthermore, the formation mechanism of the faults is discussed. It is concluded that late Cenozoic faults were formed by extension other than strike-slip movement, which was controlled by the mechanism of pure shear in the lower crust during the period. In addition, the relationship between Late Cenozoic faults and shallow hydrocarbon accumulation is discussed, it indicates that the faults controlled the formation of shallow closures and constituted the effective hydrocarbon pathways connecting deep source rock and shallow traps.
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Dissertations / Theses on the topic "Cenozoic"

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Roigé, Taribó Marta. "Procedència i evolució dels sistemes sedimentaris de la conca de Jaca (conca d’avantpaís Sudpirinenca): Interacció entre diverses àrees font en un context tectònic actiu." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/565902.

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La caracterització de l’evolució dels sistemes sedimentaris en conques d’avantpaís contribueix a desxifrar la història tectònica i erosiva de les seves àrees font. Els dipòsits clàstics de l’Eocè fins al Miocè de la conca Sudpirinenca constitueixen un exemple natural magnífic per investigar els canvis en els paleoambients, en les àrees font i en la composició dels sediments durant l’evolució de la conca. Aquesta tesi presenta un estudi integrat sobre la procedència dels sistemes sedimentaris de la conca de Jaca, basat en l’anàlisi petrogràfic de gresos, el comptatge modal de conglomerats i l’anàlisi geocronològic d’U-Pb dels zircons detrítics. Aquesta metodologia s’aplica concretament en els dipòsits que representen els últims estadis de sedimentació turbidítica durant el Lutecià (Grup Hecho), i la seva evolució als sistemes deltaics que culminen amb la continentalització de la conca, durant l’Oligocè (Formació Campodarbe). Aquest canvi en els ambients sedimentaris va acompanyat d’una major reorganització en les xarxes de drenatge, la qual és objecte d’estudi en aquest treball. S’estableix un sistema principal de drenatge axial durant la sedimentació del Grup Hecho procedent d’àrees font situades a l’est i localitzades en els Pirineus centrals. En canvi, els últims dipòsits turbidítics, corresponents al canal del Rapitán (Bartonià) són interpretats com els primers indicis de creació d’una àrea font situada al nord, provocada per l’activitat de l’encavalcament de Lakora/Eaux-Chaudes. El posterior reemplaçament de la sedimentació turbidítica per ambients deltaics i continentals (Formacions Belsué-Atarés, Sabiñánigo i Campodarbe) es caracteritza per la interacció dels sistemes de drenatge axial, procedents dels Pirineus centrals, i els sistemes de drenatge transversal, procedents de noves àrees font situades al nord, creades per l’activitat de l’encavalcament de Gavarnie. Aquestes noves àrees font estan formades pels materials mesozoics i paleozoics de la Zona Nord Pirinenca i pels dipòsits turbidítics anteriors, els quals són reciclats en el ventalls al·luvials de la conca. Fruit de l’activitat tectònica emergent al nord de la conca, durant l’Oligocè els sistemes de drenatge transversal s’acaben imposant als de drenatge axial, i evolucionen, sobretot de nord a sud, i d’est a oest, guanyant espai en la conca d’acord amb el sentit d’avançament de les estructures, provocant el desplaçament del sistema de drenatge axial cap a posicions més occidentals. Finalment, s’estableix un últim estadi de rebliment de la conca de Jaca a finals de l’Oligocè i Miocè inferior, representat pels dipòsits al·luvials del ventall de San Juan de la Peña (Formació Bernués), els quals coexisteixen amb els ventalls de Luna i Huesca, situats a la conca de l’Ebre, registrant el reciclatge de la conca Sudpirinenca. Amb tot, en aquesta tesi es fa palesa la necessitat d’integrar diferents tècniques d’anàlisi de la procedència, per tal de desxifrar senyals ambigües, que dificulten la caracterització de l’evolució dels sistemes sedimentaris, sobretot en contextos tectònics actius, on coexisteixen diverses àrees Font que evolucionen ràpidament en el temps.
Characterization of the sediment routing evolution in foreland basins gives insights on the tectonic and erosional history of the source areas. The Eocene to Miocene clastic systems of the South Pyrenean basin are a good natural laboratory to investigate paleoenvironment, source areas and sediment composition changes during the progressive evolution of a basin. This thesis provides a multidisciplinary approach integrating sandstone petrography, clast point counting and detrital zircon U-Pb geochronology, applied in the Jaca basin sedimentary systems. This methodology is performed in the last turbiditic deposits from the Hecho Group, whose stratigraphic evolution from Lutetian deep-marine to deltaic and terrestrial environments during late Eocene-Oligocene times records a major tectonic and drainage reorganization in the active Pyrenean pro-wedge. A main axially drained system sourced from eastern areas, located in the central Pyrenees, is here characterized during the Hecho Group turbidite sedimentation. However, the last turbiditic deposits from the basin, known as the Rapitán turbidite channel (Bartonian), record the first sediment input sourced from new northern source areas, created by the activity of Lakora/Eaux-Chaudes thrust. The abandonment of the turbiditic sedimentation is replaced by deltaic to terrestrial environments (Belsué-Atarés, Sabiñánigo and Campodarbe Formations), which record the interplay of axially fed systems, sourced from the central Pyrenees, with transverse fed systems derived from new northern source areas uplifted by the activity of the Gavarnie thrust. These new source areas are composed by Paleozoic and Mesozoic materials of the North Pyrenean Zone, and by the former turbiditic foreland basin deposits that are recycled into the alluvial fan systems. During Oligocene times tectonics controlled the replacement of the axially fed systems by the transverse fed systems, from north to south, and from east to west, according to the main direction of progradation of the deformation. This situation resulted with the displacement of the axially fed system towards the western margin of the basin. The last stage of infill of the Jaca basin during Oligocene to early Miocene times consisted on the sedimentation of the alluvial deposits of the San Juan de la Peña fan (Bernués Formation), at the same time that alluvial sedimentation was initiated in the Ebro basin, by the Luna and Huesca which yielded to recycling of the former foreland deposits. This thesis highlights the importance of integrating different provenance techniques in order to resolve ambiguous provenance signals which hinder the characterization of the sediment routing evolution, chiefly in active tectonic settings, where diverse source areas can occur.
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Worthington, James, and James Worthington. "Paleozoic–Cenozoic Tectonics of Central Asia." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625855.

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This dissertation investigates the evolution of continental orogenic systems in Central Asia during and between pre-collisional plate convergence (Cordilleran-style orogenesis), syn-collisional plate convergence (collisional orogenesis), and post-collisional tectonic processes within the scope of closing Paleo-Asian and Tethyan ocean basins. A brief introductory chapter outlines the scope and context of the research. Appendix A focuses on the Late Paleozoic closure of the Turkestan ocean basin and subsequent collision between the Karakum–Tarim and Kazakh–Kyrgyz terranes in the South Tian Shan, within the scope of the final amalgamation of the Mesoproterozoic–Permian Central Asian Orogenic Belt. Appendix B focuses on late Cenozoic syn-collisional exhumation of gneiss domes in the India–Asia collision, which is a component of the Triassic–recent Alpine–Himalayan orogenic belt. Abstracts of the results are provided in the respective appendices.
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Polhaupessy, Antoinette Adeleide. "Late Cenozoic palynological studies on Java." Thesis, University of Hull, 1990. http://hydra.hull.ac.uk/resources/hull:4634.

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This study is based on palynological investigations at three sites in Java: Bandung Lake, Trinil and Bumiayu. At Bandung Lake (Holocene) three cores were studied, while surface section samples were studied from Trinil in East Java (Middle Pleistocene) and Bumiayu in Central Java (Upper Pliocene). The Trinil site is well known for its hominid fossils.The pollen flora at each site is fully described and illustrated while the pollen record at each location is used to reconstruct their vegetational, environmental and climatic histories. An attempt has also been made to determine whether palynology can be used to assist in dating these deposits. At all three sites, the character of the local vegetation is better reflected than that of the regional vegetation.One of the Bandung sites (Rancaekek) was radiocarbon dated, suggesting deposition between 11,000 and 7,000 yr BP and represents a freshwater lake deposits. The lake gradually shallowed toward 7,000 yr BP, at which time it was drained. The regional pollen component suggests climatic amelioration at about 8,000 yr BP, possibly reflecting the maximum incoming of solar radiation experienced in the Northern Hemisphere about 9,000 yr BP.Studies at Trinil revealed a mosaic of forest and open vegetation growing on a lahar. The former climate at this locality was probably markedly seasonal, not unlike that of the present day. Palynology conclusively demonstrates that this sequence is Pleistocene rather than Pliocene in age. The palynological record at Bumiayu reflects a regressive sequence with lagoonal and freshwater lacustrine environments (Kalibiuk Formation) followed by freshwater fluvial deposition (Kaliglagah Formation). The climate during the deposition of this sequence was markedly seasonal. The data support an Upper Pliocene age for the Bumiayu sequence.Three taxa are shown to have become extinct in Java during the Plio-Pleistocene. These are Stenochlaena lamrifolia and S. areolaris, which become extinct at the end of the Pliocene, and Daczydium, which is thought to have become extinct during the Holocene.
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Clark, Marin Kristen 1973. "Late Cenozoic uplift of southeastern Tibet." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29758.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2003.
Includes bibliographical references.
Recent field work and DEM analysis show that remnant, local areas of a low-relief land scape (or "erosion surface") are geographically continuous across the southeastern Tibetan Plateau margin and can be correlated in order to define the maximum envelope of topogra phy of the margin itself. This observation contradicts earlier notions that the low-gradient plateau margin slope (i.e. the maximum elevation of the margin) is a product of landscape dissection and reduction by fluvial incision due to the presence of major rivers which drain this portion of the plateau and plateau margins. Although initial development of the erosion surface is likely diachronous, we propose that a continuous low-relief landscape existed at low elevations prior to uplift and long-wavelength tilt of the southeastern plateau margin. The modern altitude of the erosion surface provides an excellent datum for constraining the total amount of surface uplift of the southeastern plateau margin. The long-wavelength tilt of the surface across the plateau margin without major disruption mirrors the low-gradient decrease in crustal thickness across the plateau margin, which suggests that crustal thickening has occurred in a distributed manner. Because large-magnitude compressional structures of late Cenozoic age are lacking, we propose that crustal thickening beneath the southeastern plateau margin has largely been accomplished by preferential thickening the lower crust. Perched, relict landscape remnants that reflect slow erosion, low initial elevations and slow uplift rates contrast sharply with the rapidly eroding modern river gorges that incise the surface, indicating that the modern landscape is not in equilibrium. Surface remnants are preserved because incision of the fluvial system has been largely limited to major rivers and principle tributaries, and has not yet progressed throughout the entire fluvial network.
(cont.) This "transient condition" of the landscape in southeastern Tibet reflects the initiation of rapid bedrock incision into a developing plateau margin, and the altitude of the remnant erosion surface can also be used as a datum by which to measure the total amount of erosion since the beginning of plateau uplift. 2.1 Introduction The continent-continent collision between India and Eurasia is largely responsible for creating the Tibetan Plateau, the most extensive region of elevated topography on Earth [Figure 2.1]. The development of such an anomalously high landmass has been of interest to scientists in a broad range of disciplines ranging from lithospheric dynamics to the inter action between tectonics, climate and surface processes. Studies of the Tibetan Plateau have raised several first-order questions such as: 1) how is plate convergence accommodated in the continents and what are the relative contributions of continental subduction, uniform or differential shortening in the upper and lower crust, and lateral extrusion of rigid lithospheric blocks?; 2) how do spatial (or temporal) variations in crust and mantle rheology partition deformation throughout theorogen?; 3) does the convective removal of the mantle lithosphere contribute to surface uplift and high plateau elevation? ...
by Marin Kristen Clark.
Ph.D.
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Al-Hajri, Yasir Khalfan. "Quantifying cenozoic epeirogeny of West Africa." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614239.

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Wheeler, Paul John. "Cenozoic basin formation in SE Asia." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621934.

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Quaglio, Fernanda. "Taxonomia de invertebrados fósseis (Oligoceno-Mioceno) da ilha Rei George (Antártica ocidental) e paleobiogeografia dos Bivalvia cenozóicos da Antártica." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/44/44139/tde-25042008-153222/.

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As pesquisas apresentadas nesta dissertação integram o projeto CNPq - PROANTAR 550352/02-3 \"Mudanças paleoclimáticas na Antártica durante o Cenozóico: o registro geológico terrestre\", que estuda os depósitos cenozóicos da ilha Rei George em busca elucidação do histórico ambiental e climático desta região antártica. A evolução dos padrões de circulação marinha e atmosférica no Hemisfério Sul ocorreu em resposta ao isolamento geográfico e térmico da Antártica, resultado de sua separação da Austrália, no limite Eoceno/Oligoceno, e da América do Sul, no final do Oligoceno. Sob este aspecto, o estudo de organismos fósseis registrados nos depósitos cenozóicos da Antártica contribui para o entendimento das evoluções biológicas e ambientais ocorridas concomitantemente às mudanças paleogeográficas, oceanográficas e climáticas na região ao longo do Cenozóico. Frente à dificuldade de acesso, demanda logística e extensa cobertura de gelo, apenas uma pequena porção do registro geológico da Antártica está acessível para pesquisa. Afloramentos da ilha Rei George registram as mudanças climáticas e ambientais ocorridas do Oligoceno ao Mioceno, incluindo evidências do primeiro evento de glaciação perene no oeste do continente (Oligoceno). A despeito da abundância de fósseis nos estratos cenozóicos da ilha, são poucos os trabalhos taxonômicos com descrição sistemática detalhada de bivalves fósseis. O primeiro módulo do presente estudo apresenta a descrição taxonômica de invertebrados de depósitos cenozóicos aflorantes em duas localidades da ilha Rei George, Antártica ocidental. Da Formação Cape Melville (Mioceno), península Melville, foram descritos sete táxons de bivalves, incluindo seis espécies novas. Da Formação Polonez Cove (Oligoceno), Pico Vauréal, uma região previamente inexplorada paleontologicamente, foram descritos sete táxons de invertebrados (bivalves, braquiópodes, tubos de serpulídeos, briozoários e fragmentos de equinodermes), incluindo duas espécies novas. O segundo módulo corresponde à reunião dos gêneros de bivalves registrados em depósitos cenozóicos da Antártica. A análise do registro apontou para o conhecimento bastante incipiente sobre a diversidade de bivalves antárticos ao longo do Cenozóico. Além disso, a comparação entre gêneros de bivalves cenozóicos registrados na Antártica e Nova Zelândia revelou que a maior parte dos gêneros compartilhados está registrada em depósitos eocênicos, o que suporta o isolamento geográfico da Antártica e a redução do intercâmbio faunístico entre a Antártica e regiões periféricas após o Oligoceno. A análise do registro sugeriu um evento de dispersão intenso durante o Eoceno, e pequenos pulsos de dispersão após o Oligoceno. O padrão de distribuição dos táxons concorda parcialmente com as reconstituições de paleocorrentes disponíveis na literatura. A dispersão durante o Eoceno teria ocorrido da Antártica para a Nova Zelândia na direção do Atlântico para o Pacífico. Este evento de dispersão concorda com a hipótese de existência de conexões marinhas de plataforma rasa entre o oeste e o leste da Antártica (\"Passagem de Shackleton\") e da província Weddeliana do final do Cretáceo ao Eoceno. Os eventos de dispersão pósoligocênicos teriam ocorrido durante e após o estabelecimento da Corrente Circum-Antártica, não mais pela \"Passagem de Shackleton\", mas margeando a Antártica pelas bordas ocidental atlântica e oriental em direção à Nova Zelândia. A análise do registro dos bivalves cenozóicos da Antártica também concorda com a hipótese de glaciação perene a partir do início do Oligoceno na região leste do continente, e na metade do Oligoceno na região oeste, com temperaturas mais amenas que as observadas atualmente.
The research presented in this dissertation comprised part of the CNPq - PROANTAR Project 550352/02-3 \"Mudanças paleoclimáticas na Antártica durante o Cenozóico: o registro geológico terrestre\", which studies Cenozoic deposits from King George Island in order to elucidate the environmental and climatic Cenozoic histories of this Antarctic region. Cenozoic evolution of marine and atmospheric circulation in the Southern Hemisphere occurred in response to the geographic and thermal isolation of Antarctica, which resulted from the separation of Antarctica from Australia, around Eocene/Oligocene boundary, and from South America, during the late Oligocene. Thus, study of fossil organisms from Antarctic Cenozoic deposits contributes to the understanding of biological and environmental evolutions that accompanied paleogeographic, oceanographic and climatic changes during the Cenozoic. As a result of the difficult access, logistic demand and extensive ice cover, only a small part of the Cenozoic Antarctic record is available for study. King George Island records climatic and environmental changes from the Oligocene to the Miocene, including evidence of the first full-scale glaciation (Oligocene) of West Antarctica. Despite the abundance of fossils in Cenozoic deposits of the island, taxonomic studies with detailed systematic descriptions of bivalves are very rare. The first section of this work consists of taxonomic descriptions of invertebrates from Cenozoic deposits cropping out in two localities of King George Island, West Antarctica. Seven taxa of bivalves, including six new species were described from the Cape Melville Formation (Miocene), at Melville Peninsula. Seven taxa of invertebrates (bivalves, brachiopods, serpulid tubes, bryozoans, and echinoderm fragments) were described from the Polonez Cove Formation (Oligocene), at Vauréal Peak, a site previously unexplored paleontologically. The second section presents the results of a survey of the Cenozoic fossil record of Antarctic bivalves. The analysis of the fossil record confirmed that the current knowledge about the Cenozoic diversity of the group is very scarce. Moreover, comparison of Cenozoic bivalve genera from Antarctica and New Zealand showed that the greatest number of shared taxa is recorded in Eocene deposits. This finding supports the geographic isolation of Antarctic and the drop in faunal interchange between Antarctica and periphery after the Oligocene. Analysis of the fossil record suggested an intensive dispersal event during the Eocene, and restricted pulses of dispersal from the Oligocene onwards. The distribution pattern of taxa provides partial support for available reconstructions of marine currents. Eocene dispersal would have occurred from Antarctica to New Zealand in Atlantic-Pacific direction. This dispersal event is consistent with the hypothesis of shallow marine connections between West and East Antarctica (\"Shackleton Seaway\"), as well of the existence of the Weddellian Province from the Late Cretaceous to the Eocene. Dispersal events following the Oligocene would have occurred during and after the establishment of the Circum-Antarctic Current, along the West-Atlantic and East margins of Antarctica towards New Zealand, and no longer through \"Shackleton Seaway\". These analyses also support the hypothesis of full-scale glaciation in West Antarctica from the early Oligocene onwards, and in East Antarctica since the mid-Oligocene, with warmer temperatures than today.
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Sapota, Tomasz. "Late Cenozoic Geoarchives from Lake Baikal, Siberia." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4552.

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Three long sediment cores (BDP-98 – 600 m, BDP-96 – 200 m and BDP-93 – 100 m) drilled in Lake Baikal (Siberia) have been studied with the aims of establishing an absolute chronology and reconstructing paleoclimatic and paleoenvironmental changes in the region. The location of the lake at relatively high latitude and continental interior and a thick continuous sedimentary archive that developed in a rift system tectonic setting provide unique material for this investigation. The cosmogenic isotope 10Be was used for dating and the results indicate time spans of 8 (+0.8\-0.6) Myr for BDP-98, 5.5 (±0.13) Myr for BDP-96 and >0.7 Myr for BDP-93. Two major sedimentary facies (deltaic and hemipelagic) are distinguished by textural geochemical and mineralogical data. Detrital mineral composition suggests negligible change in provenance during the period studied. Formation of authigenic minerals, such as framboidal pyrite, vivianite and siderite, reflects variable environmental conditions in the lake and climate change in the region. Biogenic silica content shows climatic influence, which is modified by the supply of detrital material and postdepositional alterations. 10Be dating, combined with lithological analysis of the sediments, makes it possible to place temporal constrains on climate cooling at the Miocene/Pliocene boundary (5 Myr ago) and at the Early/Late Pliocene boundary (3.6 Myr ago) as well as the beginning of the northern hemisphere glaciation at about 2.5–2.6 Myr ago. The regional east-west tectonic extension of south-east Asia, related to Tibetan Plateau uplift, was confined in the Baikal area to between about 7 and 5 Myr ago, with a rifting rate calculated at 7 mm year-1. Furthermore, the 10Be data suggest that geomagnetic field intensity strengthened around the Miocene/Pliocene boundary.

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Sterling, Nile Akel Kevis. "Cenozoic changes in Pacific absolute plate motion." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7048.

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Using the polygonal finite rotation method (PFRM) in conjunction with the hotspotting technique, a model of Pacific absolute plate motion (APM) from 65 Ma to the present has been created. This model is based primarily on the Hawaiian-Emperor and Louisville hotspot trails but also incorporates the Cobb, Bowie, Kodiak, Foundation, Caroline, Marquesas and Pitcairn hotspot trails. Using this model, distinct changes in Pacific APM have been identified at 48, 27, 23, 18, 12 and 6 Ma. These changes are reflected as kinks in the linear trends of Pacific hotspot trails. The sense of motion and timing of a number of circum Pacific tectonic events appear to be correlated with these changes in Pacific APM. With the model and discussion presented here it is suggested that Pacific hotpots are fixed with respect to one another and with respect to the mantle. If they are moving as some paleomagnetic results suggest, they must be moving coherently in response to large-scale mantle flow.
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Kennan, Lorcan. "Cenozoic tectonics of the central Bolivian Andes." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306963.

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Books on the topic "Cenozoic"

1

Hsü, Kenneth J., ed. Mesozoic and Cenozoic Oceans. Washington, D. C.: American Geophysical Union, 1986. http://dx.doi.org/10.1029/gd015.

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1929-, Hsü Kenneth J., and International Geological Congress (27th : 1984 : Moscow, Russia), eds. Mesozoic and Cenozoic oceans. Washington, D.C: American Geophysical Union, 1986.

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Cenozoic mammals of Africa. Berkeley: University of California Press, 2010.

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A survey of Cenozoic volcanism on mainland Asia. Boulder, Colo: Geological Society of America, 1987.

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The pre-Cainozoic geology of the Okwa Valley near Tswaane borehole: An explanation of part of quarter degree sheet 2221B. Lobatse, Botswana: Director, Geological Survey Dept., 1988.

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Whittaker, J. E. Benthic Cenozoic foraminifera from Ecuador. London: British Museum (Natural History), 1988.

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Beu, A. G. Cenozoic mollusca of New Zealand. Lower Hutt, N.Z: New Zealand Geological Survey, 1990.

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American Association of Petroleum Geologists, SEPM (Society for Sedimentary Geology), American Association of Petroleum Geologists. Annual Meeting, and AAPG Hedberg Research Conference (2009), eds. Cenozoic carbonate systems of Australasia. Tulsa, Okla: SEPM (Society for Sedimentary Geology), 2010.

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Vsesoi︠u︡znyĭ simpozium Beringiĭskai︠a︡ susha i ee znachenie dli︠a︡ razvitii︠a︡ golarkticheskikh flor i faun v kaĭnozoe (1973 Khabarovsk, R.S.F.S.R.). Beringia in the Cenozoic era. Edited by Kontrimavichus Vitautas Leonovich. Rotterdam: A.A. Balkema, 1985.

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R, Scotese Christopher, and Sager W. W, eds. Mesozoic and Cenozoic plate reconstructions. Amsterdam: Elsevier, 1989.

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Book chapters on the topic "Cenozoic"

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Ghorbani, Mansour. "Cenozoic." In Springer Geology, 225–63. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04963-8_4.

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Faure, Gunter, and Teresa M. Mensing. "Cenozoic Volcanoes." In The Transantarctic Mountains, 519–71. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9390-5_16.

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Henry, C. H., and F. W. McDowell. "Cenozoic volcanism." In Structure and Stratigraphy of Trans-Pecos Texas: El Paso to Guadalupe Mountains and Big Bend July 20–29, 1989, 131–34. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft317p0131.

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David, Anisha, and Akash Gautam. "Cenozoic Era." In Encyclopedia of Animal Cognition and Behavior, 1133–47. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_1954.

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David, Anisha, and Akash Gautam. "Cenozoic Era." In Encyclopedia of Animal Cognition and Behavior, 1–15. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-47829-6_1954-1.

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Muehlberger, William R., Patricia W. Dickerson, J. Russell Dyer, and David V. LeMone. "Day five—Mid-Cenozoic igneous geology, Late Cenozoic structure." In Structure and Stratigraphy of Trans-Pecos Texas: El Paso to Guadalupe Mountains and Big Bend July 20–29, 1989, 17–20. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft317p0017.

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Tran, Trong-Hoa, Gleb V. Polyakov, Tuan-Anh Tran, Alexander S. Borisenko, Andrey E. Izokh, Pavel A. Balykin, Thi-Phuong Ngo, and Thi-Dung Pham. "Metallogeny in the Cenozoic." In Modern Approaches in Solid Earth Sciences, 349–58. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25235-3_9.

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Génot, P. "Cenozoic and Recent Dasycladales." In Calcareous Algae and Stromatolites, 131–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-52335-9_8.

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Wright, J. B. "Cretaceous and Cenozoic magmatism." In Geology and Mineral Resources of West Africa, 138–47. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-015-3932-6_16.

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Aguilera, Emilia, Elizabeth Mazzoni, and Jorge Rabassa. "Patagonian Cenozoic Magmatic Activity." In Volcanic Landscapes and Associated Wetlands of Lowland Patagonia, 31–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71921-4_2.

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Conference papers on the topic "Cenozoic"

1

Berliguzhin, Maxot T., Kazhmurat M. Ahmedenov, and Jamilya B. Yakupova. "PALEONTOLOGICAL FINDINGS OF LARGE MAMMALS IN THE CENOZOIC IN WESTERN KAZAKHSTAN." In Treshnikov readings – 2021 Modern geographical global picture and technology of geographic education. Ulyanovsk State Pedagogical University named after I. N. Ulyanov, 2021. http://dx.doi.org/10.33065/978-5-907216-08-2-2021-242-243.

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Acheche, M. H., R. Ghénima, M. Saidi, and H. Ben Kilani. "Mesozoic and Cenozoic Petroleum Systems in Tunisia." In 1st EAGE North African/Mediterranean Petroleum & Geosciences Conference & Exhibition. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.8.t033.

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Shupinski, Alexandria, and S. Kathleen Lyons. "FUNCTIONAL DIVERSITY OF NORTH AMERICAN CENOZOIC MAMMALS." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-334299.

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Villarreal, Dustin, Alexander C. Robinson, Ilhomjon Oimahmadov, Brian MacDonald, Barbara Carrapa, and Mustafo Gadoev. "ASSESING PRE-CENOZOIC SHORTENING IN THE PAMIR." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287330.

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Lewis, Joshua Matthew. "CENOZOIC FELSIC MAGMATISM IN THE FRANKLIN MOUNTAINS." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-338107.

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Fraser, Danielle, Andrew G. Simpson, and Laura C. Soul. "UNBOUNDED DIVERSITY DYNAMICS IN CENOZOIC CARNIVOROUS MAMMALS." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-320944.

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Tennakoon, Shamindri, Roger W. Portell, Roger W. Portell, Roger W. Portell, Michał Kowalewski, Michał Kowalewski, Michał Kowalewski, et al. "MORPHOMETRIC ANALYSIS OF CENOZOIC CASSIDS (MOLLUSCA: GASTROPODA)." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323424.

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Hoffer, Jerry M. "Late Cenozoic basalts of southwestern New Mexico." In 39th Annual Fall Field Conference. New Mexico Geological Society, 1988. http://dx.doi.org/10.56577/ffc-39.119.

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Liu, Lijun, Quan Zhou, and Diandian Peng. "CENOZOIC TOPOGRAPHIC EVOLUTION OF WESTERN-CENTRAL US." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-366161.

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Whiteford, Ross, Bärbel Hönisch, and Vicki Ferrini. "Compiling Estimates of Cenozoic CO2 from Multiple Proxies." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2855.

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Reports on the topic "Cenozoic"

1

Dumurdzanov, Nikola, Todor Serafimovski, and B. C. Burchfiel. Cenozoic Sedimentary and Volcanic Rocks of Macedonia. Geological Society of America, 2004. http://dx.doi.org/10.1130/2004-dumurdzanov-macedonia.

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Reidel, S. P., N. P. Campbell, K. R. Fecht, and K. A. Lindsey. Late Cenozoic structure and stratigraphy of south-central Washington. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10193734.

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Souther, J. G. The Late Cenozoic Mount Edziza Volcanic Complex, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133497.

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Thomas, F. C. Cenozoic micropaleontology of three wells, Scotian Shelf and slope. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2001. http://dx.doi.org/10.4095/212645.

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Anderson, R. G., D. J. Thorkelson, P. L. Smith, and J. K. Russell. Mesozoic and Cenozoic Evolution of Iskut River area, Nw B.c. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131187.

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Bingham-Koslowski, N., L. T. Dafoe, M R St-Onge, E. C. Turner, J. W. Haggart, U. Gregersen, C. E. Keen, A. L. Bent, and J. C. Harrison. Introduction and summary. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/321823.

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The papers contained in this bulletin provide a comprehensive summary and updated understanding of the onshore geology and evolution of Baffin Island, the Labrador-Baffin Seaway, and surrounding onshore regions. This introductory paper summarizes and links the geological and tectonic events that took place to develop the craton and subsequent Proterozoic to Cenozoic sedimentary basins. Specifically, the Precambrian and Paleozoic geology of Baffin Island and localized occurrences underlying the adjacent Labrador-Baffin Seaway, the Mesozoic to Cenozoic stratigraphy and rift history that records the opening and evolution of the Labrador-Baffin Seaway, the seismicity of the region, as well as both the mineral (Baffin Island) and hydrocarbon (onshore and offshore) resource potential are discussed.
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McNeil, D. H. Distribution of Cenozoic agglutinated benthic foraminifers in the Beaufort-Mackenzie Basin. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207695.

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McNeil, D. H. Distribution of Cenozoic calcareous benthic foraminifers in the Beaufort-Mackenzie Basin. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207696.

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Bull, P. W., K. Czarnota, N. J. White, and D. C. Champion. Exploiting Cenozoic volcanic activity to quantify upper mantle structure beneath eastern Australia. Geoscience Australia, 2020. http://dx.doi.org/10.11636/135117.

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Dallimore, S. R., and T. S. Collett. Regional gas hydrate occurrences, permafrost conditions, and Cenozoic geology, Mackenzie Delta area. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210746.

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