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Zawartość zarchiwizowana w dniu 2024-06-18

The Late Eocene climatic transition from greenhouse to icehouse conditions in the Neo-Tethys

Cel

The middle Eocene to early Oligocene period represents the most important transition in Earth’s climate: from greenhouse conditions to the icehouse conditions of the present day. This global transition was preceded by long-term cooling with superposed short-term variations in various marine proxies, which indicate instability in the paleoceanographic state prior to the key climatic transition. We propose to test the hypothesis that global variations in climatic conditions were synchronous with large variations in circulation in the Neo-Tethys Ocean. Tectonic closure of the gateway between the Arabian and Eurasian plates represents a threshold that caused late Eocene paleoceanographic variations in the Neo-Tethys and in global ocean circulation. The premise of this proposal is that new paleomagnetic and environmental studies of Eocene sequences from the Tethys sector and Indian Ocean drill cores can provide important insights about the timing and nature of paleoclimatic events and sedimentary processes that affected the Eocene oceans. We will develop new high-resolution magnetostratigraphies from each proposed section to determine the timing of the bio-magnetic and climatic events. Sites in the Indian Ocean and sections in Italy, Egypt and Turkey are the best candidates. We propose a multidisciplinary study that involves detailed bio-magnetostratigraphy, environmental magnetism and cyclostratigraphic astronomical calibration. Paleobiological abundances, isotopic analyses and geochemistry will then be used to develop an integrated view of paleoceanographic events in this key interval of geological time. The quantitative dataset to be obtained will enable us to test the hypothesis that paleoceanographic variations in the Neo-Tethys were related to global Eocene climatic changes and variations in ocean circulation.

Zaproszenie do składania wniosków

FP7-PEOPLE-IEF-2008
Zobacz inne projekty w ramach tego zaproszenia

Koordynator

UNIVERSITY OF SOUTHAMPTON
Wkład UE
€ 183 618,80
Adres
Highfield
SO17 1BJ Southampton
Zjednoczone Królestwo

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Region
South East (England) Hampshire and Isle of Wight Southampton
Rodzaj działalności
Higher or Secondary Education Establishments
Kontakt administracyjny
Karen Mckinstry (Ms.)
Linki
Koszt całkowity
Brak danych