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DOI	10.1016/j.palaeo.2019.109312
	Decoding sea surface and paleoclimate conditions in the eastern Mediterranean over the Tortonian-Messinian Transition
	Kontakiotis G.; Besiou E.; Antonarakou A.; Zarkogiannis S.D.; Kostis A.; Mortyn P.G.; Moissette P.; Cornée J.-J.; Schulbert C.; Drinia H.; Anastasakis G.; Karakitsios V.
发表日期	2019
ISSN	0031-0182
卷号	534
英文摘要	New sedimentological, micropaleontological and geochemical data from the Upper Miocene pre-evaporitic sedimentary sequence of the Faneromeni section (Crete Island, eastern Mediterranean) revealed a stepwise restriction of the Mediterranean Sea preceding the Messinian Salinity Crisis (MSC), which was modulated by a sedimentary cyclicity responding to orbital parameters. This cyclicity is manifested by lithological alternations from laminated to indurated homogeneous marls and clayey limestones, and covers the Tortonian-Messinian Transition (TMT; 7.6–6.7 Ma). This time window covers the successive closure of the marine Mediterranean-Atlantic gateways, which culminated in the onset of the MSC. In the present study, we present the first evidence for changes in the upper water column reflected by sea surface temperature (SST) and salinity (SSS) variations that correlate with pronounced paleoclimatic fluctuations. Planktonic foraminiferal isotopes, in combination with paired mixed layer Sr/Ca-derived SST data, reveal that the very warm late Tortonian interval has been followed by a strong long-term cooling (~10 °C) and desalination (~10‰) trend during the earliest Messinian, attributed to the paroxysmal phase of the so-called “siphon” event. In particular, the climate shift that occurred at the end of a global carbon isotope (δ13C) decrease suggests that changes in the carbon cycle were instrumental in driving late Miocene climate dynamics (cooling and aridity) in the progressively isolated eastern Mediterranean Sea. The observed salinity variability during this time interval also provides further insights about seasonal freshwater inputs and gives new support to the much-debated hydrologic regime (linear salinity increase vs step-function evolution with strong salinity fluctuations) preceding the deposition of evaporites. The novel methodology of foraminiferal Sr/Ca paleothermometry and results of this study could have numerous potential applications to other regions and relevant extreme geological events. Therefore, in the near future we expect this approach to add important new information to our understanding of Neogene climates. © 2019 Elsevier B.V.
英文关键词	Hydrological cycle; Late Miocene; Messinian Salinity Crisis (MSC); Sea surface salinity (SSS); Siphon cooling event; Sr/Ca paleothermometry
语种	英语
scopus关键词	calcium; carbon cycle; carbon isotope; climate conditions; cooling; desalination; hydrological cycle; hydrological regime; limestone; marl; Miocene; paleoclimate; paleosalinity; planktonic foraminifera; sea surface temperature; sedimentary sequence; strontium; Tortonian-Messinian boundary; Aegean Islands; Atlantic Ocean; Crete [Greece]; Greece; Mediterranean Sea; Mediterranean Sea (East)
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150803
作者单位	Faculty of Geology & Geoenvironment, School of Earth Sciences, Department of Historical Geology-Paleontology, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784, Greece; Institute of Environmental Science and Technology (ICTA), Universitat Autonoma de Barcelona (UAB), Edifici Z - Carrer de les Columnes, Bellaterra, 08193, Spain; Department of Geography, Universitat Autonoma de Barcelona (UAB), Spain; Muséum National d'Histoire Naturelle, Département Origines et Evolution, UMR7207 CR2P, 8 rue Buffon, Paris, 75005, France; Géosciences Montpellier, Université des Antilles-Université de Montpellier-CNRS, Pointe à Pitre, FWI, France; GeoZentrum Nordbayern, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, 91054, Germany
推荐引用方式 GB/T 7714	Kontakiotis G.,Besiou E.,Antonarakou A.,et al. Decoding sea surface and paleoclimate conditions in the eastern Mediterranean over the Tortonian-Messinian Transition[J],2019,534.
APA	Kontakiotis G..,Besiou E..,Antonarakou A..,Zarkogiannis S.D..,Kostis A..,...&Karakitsios V..(2019).Decoding sea surface and paleoclimate conditions in the eastern Mediterranean over the Tortonian-Messinian Transition.Palaeogeography, Palaeoclimatology, Palaeoecology,534.
MLA	Kontakiotis G.,et al."Decoding sea surface and paleoclimate conditions in the eastern Mediterranean over the Tortonian-Messinian Transition".Palaeogeography, Palaeoclimatology, Palaeoecology 534(2019).