Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Eocene-Oligocene Transition"”.
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Paleoceanographic and Paleoclimatic Changes Associated With the Eocene-Oligocene Transition
<p>The Eocene-Oligocene transition (EOT) is one of the largest global paleoclimatic events of the past 50 myr. Surface and deep water temperature histories and variations in global ice volume were reconstructed using paired measurements of δ<super>18</super>O and Mg/Ca on benthic and …
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Terrigenous Grain-Size Record of the Newfoundland Ridge Contourite Drift, IODP Site U1411: The First Physical Proxy Record of North Atlantic Abyssal Current Intensity during the Eocene-Oligocene Transition
… has been a topic of ongoing study, with the Eocene-Oligocene Transition (EOT, ~34 Ma) as a potential focal point of this shift. However, the role played by abrupt EOT cooling and Antarctic glaciation in North Atlantic circulation remains unclear. Improved constraints on Paleogene circulation …
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Cenozoic Variations in the Deep Western Boundary Current as Recorded in the Seismic Stratigraphy of Contourite Drifts, Newfoundland Ridge, Offshore Canada
… trend that initiated at the end of the Early Eocene Climatic Optimum. Within the Active-Contourite-Drift Phase at ~30 Ma depocenters shifted deeper and current energy and focus is interpreted to have increased in association with global oceanographic change at the Eocene-Oligocene transition. …
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Deep-marine depositional systems of the western North Atlantic: Insights into climate and passive-margin evolution
… drifts offshore Newfoundland to investigate the Eocene-Oligocene Transition (EOT), the most recent global greenhouse-to-icehouse transition. Results suggest that the Deep Western Boundary Current intensified gradually from 35-26 Ma, not abruptly at the EOT, and change consistent with deepening of …
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Seasonality in a changing climate: Insights from the modern ocean with application to the Eocene Epoch
… conditions comes from looking at warm and transitional intervals in Earth’s geologic past, such as the Eocene Epoch (~56-34 Ma). The Eocene Epoch was a time of large-scale global climate change, bookended by both the warmest temperatures of the Cenozoic (i.e., the Paleocene-Eocene Thermal …
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THE CLIMATIC, BIOTIC AND TECTONIC EVOLUTION OF THE PALEOGENE RENOVA FORMATION OF SOUTHWESTERN MONTANA
… The period between the end of the early Eocene and the early Oligocene (~49-32 Ma) was a time of rapid and far-reaching climate change. This period saw the end of global greenhouse climate and the establishment of icehouse conditions across the Earth. These changes led to profound …
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THE CLIMATIC, BIOTIC AND TECTONIC EVOLUTION OF THE PALEOGENE RENOVA FORMATION OF SOUTHWESTERN MONTANA
… The period between the end of the early Eocene and the early Oligocene (~49-32 Ma) was a time of rapid and far-reaching climate change. This period saw the end of global greenhouse climate and the establishment of icehouse conditions across the Earth. These changes led to profound …