Articles with "eocene oligocene" as a keyword



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Strontium isotope radiometric dating reveals the late Eocene and Oligocene successions in northern Kuwait

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Published in 2019 at "Arabian Journal of Geosciences"

DOI: 10.1007/s12517-019-4455-4

Abstract: The strata exposed at Jal Az-Zor escarpment in northern Kuwait represent one of the best outcrops in the country, extending over 60 km in length with a cliff-face of around 36 m. The age assignment of these… read more here.

Keywords: age; late eocene; strontium isotope; eocene oligocene ... See more keywords
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Eocene-Oligocene paleoenvironmental changes in the South Orkney Microcontinent (Antarctica) linked to the opening of Powell Basin

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Published in 2021 at "Global and Planetary Change"

DOI: 10.1016/j.gloplacha.2021.103581

Abstract: Abstract The scarcity of paleo-records from the Antarctic Peninsular region of the Southern Ocean hinders our understanding of the timing of the opening of Drake Passage, specifically in the region of the South Orkney Microcontinent… read more here.

Keywords: eocene oligocene; powell basin; som; powell ... See more keywords
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Seismic architecture and seismic geomorphology of heterozoan carbonates: Eocene-Oligocene, Browse Basin, Northwest Shelf, Australia

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Published in 2017 at "Marine and Petroleum Geology"

DOI: 10.1016/j.marpetgeo.2017.02.011

Abstract: Abstract Seismic characterization of Eocene-Oligocene heterozoan carbonate strata from the Browse Basin, Northwest Shelf of Australia, defines marked progradation of nearly 10 km. Stratal terminations and stacking subdivide the succession into mappable seismic units. Stratal architecture… read more here.

Keywords: heterozoan; basin northwest; browse basin; eocene oligocene ... See more keywords
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Eocene to Oligocene dinoflagellate cysts from the Tattofte section, western External Rif, northwestern Morocco: Biostratigraphy, paleoenvironments and paleoclimate

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Published in 2018 at "Palaeogeography, Palaeoclimatology, Palaeoecology"

DOI: 10.1016/j.palaeo.2018.07.004

Abstract: Abstract The palynological analysis of the Eocene–Oligocene succession from the Tattofte section in the western External Rif (northwestern Morocco) reveals the presence of well-preserved and diverse assemblage, rich in dinoflagellate cysts (dinocysts). Qualitative analyses, especially… read more here.

Keywords: section western; tattofte section; eocene oligocene; external rif ... See more keywords

North Atlantic Evidence for a Unipolar Icehouse Climate State at the Eocene‐Oligocene Transition

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Published in 2019 at "Paleoceanography and Paleoclimatology"

DOI: 10.1029/2019pa003563

Abstract: Earth's climate transitioned from a warm unglaciated state to a colder glaciated “icehouse” state during the Cenozoic. Extensive ice sheets were first sustained on Antarctica at the Eocene‐Oligocene Transition (EOT, ~34 Ma), but there is… read more here.

Keywords: eocene oligocene; oligocene transition; north atlantic; state ... See more keywords
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Climate transition at the Eocene-Oligocene influenced by bathymetric changes to the Atlantic-Arctic oceanic gateways.

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Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2115346119

Abstract: SignificanceThe results show that dynamic variations in the Earth's interior could have played a key role in the Eocene-Oligocene climatic transition (∼33.9 Ma) and the inception of glaciations. Pulsations in the Iceland mantle plume modified… read more here.

Keywords: eocene oligocene; arctic oceanic; atlantic arctic; changes atlantic ... See more keywords
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Typification of Eocene–Oligocene diatom taxa proposed by Grove & Sturt (1886–1887) from the Oamaru Diatomite

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Published in 2017 at "Diatom Research"

DOI: 10.1080/0269249x.2017.1395366

Abstract: The so-called Oamaru Diatomite dates from approximately the Eocene–Oligocene Transition (∼34 million years ago), which is widely regarded as one of the most important climatic events of the entire Cenozoic era due to global cooling… read more here.

Keywords: diatom; grove sturt; eocene oligocene; sturt ... See more keywords
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Uplift, climate and biotic changes at the Eocene–Oligocene transition in south-eastern Tibet

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Published in 2019 at "National Science Review"

DOI: 10.1093/nsr/nwy062

Abstract: Abstract The uplift history of south-eastern Tibet is crucial to understanding processes driving the tectonic evolution of the Tibetan Plateau and surrounding areas. Underpinning existing palaeoaltimetric studies has been regional mapping based in large part… read more here.

Keywords: oligocene transition; transition south; tibet; eastern tibet ... See more keywords
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Eocene−Oligocene glaciation on a high central Tibetan Plateau

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Published in 2023 at "Geology"

DOI: 10.1130/g51104.1

Abstract: The nature of glaciation (bipolar vs. unipolar) during the Eocene−Oligocene transition (EOT) remains unresolved. Here, we report the occurrence of frost marks, ice-rafted debris (IRD), and glendonites from the Upper Eocene to Lower Oligocene Niubao… read more here.

Keywords: eocene oligocene; central tibetan; plateau; eocene ... See more keywords
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Events at the turn of the Eocene and Oligocene in the Central Eurasia Region (middle latitudes)

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Published in 2017 at "Doklady Earth Sciences"

DOI: 10.1134/s1028334x17030199

Abstract: The Eocene and Oligocene transition sections (Priabonian–Rupelian) of the Aral–Turgai, West Siberian, Volga–Don, and Crimea–Caucasus regions have been studied in detail [1], and the global biospheric crisis events have been estimated at the turn of… read more here.

Keywords: central eurasia; oligocene central; turn eocene; eocene oligocene ... See more keywords