globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.07.025
论文题名:
New insights into the early Pliocene hydrographic dynamics and their relationship to the climatic evolution of the Mediterranean Sea
作者: Kontakiotis G.; Karakitsios V.; Mortyn P.G.; Antonarakou A.; Drinia H.; Anastasakis G.; Agiadi K.; Kafousia N.; De Rafelis M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 459
起始页码: 348
结束页码: 364
语种: 英语
英文关键词: Mg/Ca-SSTs ; Paleoceanography ; Sea-level changes ; Sediment cycles ; Stable isotopes ; “Trubi” formation
英文摘要: One of the most enigmatic features of long-term Cenozoic climatic evolution, with some analog potential for present/future global climate change, is the last sustained warm and high-atmospheric CO2 interval in Earth's history, which started after the end of the Messinian Salinity Crisis (5.971–5.332 Ma) in the Mediterranean Sea. We present high-resolution, astronomically-tuned climate (Mg/Ca, δ18O) and productivity (Ba/Ca, δ13C) proxy records from the planktonic foraminifera Globigerinoides obliquus in the Kalamaki section (Zakynthos Island, Greece), which sheds new light on the early Pliocene Mediterranean hydrographic dynamics, and the associated climatic transition from 5.33 to 5.11 Ma. We recognized four distinct climatic phases with variable amplitude changes: (1) very warm climate interval prior to 5.28 Ma characterized by minimum ice volume, large salinity fluctuations, enhanced productivity, and intense river runoff, (2) stable paleoceanographic conditions from 5.28 to 5.23 Ma, which reflect a relatively warm and mesotrophic to eutrophic open-marine environment with improved ventilation, (3) a brief interval (20 ky) characterized by the most pronounced ice growth and intense cooling (∼ 5 °C) coupled with the abrupt decrease of ventilation and primary productivity, and (4) reinstatement of relatively stable conditions (warm and well-ventilated mesotrophic upper water column) in conjunction with relatively stable sea-level after 5.21 Ma. Overall, the succession of these phases provides an explanation for the more variable Mediterranean climate and stronger hydrographic variability with respect to other regions during the early Pliocene. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68305
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作者单位: Faculty of Geology & Geoenvironment, School of Earth Sciences, Department of Historical Geology-Paleontology, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, Greece; Institute of Environmental Science and Technology (ICTA), Universitat Autςnoma de Barcelona (UAB), Edifici Z - Carrer de les Columnes, Bellaterra, Spain; Department of Geography, Universitat Autςnoma de Barcelona (UAB), Spain; Université Pierre et Marie CURIE, Institut des Sciences de la Terre de Paris UMR 7193 CNRS-UPMC, Paris, France; Géosciences Environnement Toulouse (GET), Univ. Paul Sabatier, UMR CNRS 5563, Toulouse, France

Recommended Citation:
Kontakiotis G.,Karakitsios V.,Mortyn P.G.,et al. New insights into the early Pliocene hydrographic dynamics and their relationship to the climatic evolution of the Mediterranean Sea[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,459
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