气候变化领域集成服务门户(CCPortal): The myth of the Messinian Dardanelles: Late Miocene stratigraphy and palaeogeography of the ancient Aegean-Black Sea gateway

CCPortal

DOI	10.1016/j.palaeo.2020.110033
	The myth of the Messinian Dardanelles: Late Miocene stratigraphy and palaeogeography of the ancient Aegean-Black Sea gateway
	Krijgsman W.; Stoica M.; Hoyle T.M.; Jorissen E.L.; Lazarev S.; Rausch L.; Bista D.; Alçiçek M.C.; Ilgar A.; van den Hoek Ostende L.W.; Mayda S.; Raffi I.; Flecker R.; Mandic O.; Neubauer T.A.; Wesselingh F.P.
发表日期	2020
ISSN	0031-0182
卷号	560
英文摘要	The Dardanelles region has formed a key gateway connecting the Eastern Paratethys and the Aegean/Mediterranean since the late Miocene. Its sedimentary sequences contain crucial information about connectivity and tectonics but so far lack unambiguous age constraints. Only a few Miocene marine episodes have been documented and fossil assemblages are predominantly composed of Paratethyan fauna (mollusks and ostracods). Here, we apply an integrated stratigraphic approach and use the recently established chronostratigraphy for the Eastern Paratethys to re-evaluate the faunal assemblages and palaeoenvironments of the Seddülbahir and İntepe sections that allegedly played a crucial role in the geodynamic evolution of the Dardanelles during the Messinian-Zanclean. The Paratethyan ostracods and mollusks, however, clearly indicate that these sections correspond to the middle Tortonian (~9 Ma; Bessarabian–Khersonian in Eastern Paratethys terminology). Nannofossil assemblages are dominated by a mixing of reworked taxa from the late Eocene and Oligocene and no age-diagnostic taxa have been observed. Dinoflagellate analyses are also hampered by reworking and mainly reveal non-marine (fresh to oligohaline) aquatic conditions. Fossil mammal remains in the Seddülbahir section and other localities in the region confirm the late Miocene age. Strontium (87Sr/86Sr) isotope ratios of the anomalohaline (brackish) ostracods are significantly below open ocean values and similar to values obtained from Khersonian ostracods of Bulgaria. Fresh water assemblages reveal much higher 87Sr/86Sr values, which are interpreted to reflect the composition of local rivers. We conclude that in late Miocene times the Dardanelles region was a fresh to anomalohaline embayment, ephemerally connected to the Eastern Paratethys. We found no evidence for a major Messinian erosional surface nor for marine Mediterranean fossils indicative of the early Zanclean. Our results furthermore indicate that the proposed Messinian age for the propagation of the North Anatolian Fault into the Dardanelles region must be revised. © 2020 Elsevier B.V.
英文关键词	Miocene; North Anatolian Fault; Paleontology; Paratethys; Stratigraphy; Turkey
语种	英语
scopus关键词	biostratigraphy; chronostratigraphy; Eocene; fossil assemblage; marine mammal; Messinian; North Anatolian Fault; Oligocene; open ocean; paleogeography; Paratethys; reworking; Tortonian; Black Sea; Bulgaria; Canakkale [Turkey]; Dardanelles; Turkey; Dinophyceae; Mammalia; Mollusca; Ostracoda; Zanclea
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/150280
作者单位	Department of Earth Sciences, Utrecht University, Budapestlaan 17, Utrecht, 3584 CD, Netherlands; Department of Geology, Bucharest University, Bălcescu Bd. 1, Bucharest, 010041, Romania; CASP, West Building, Madingley Rise, Madingley Road, Cambridge, CB3 0UD, United Kingdom; Petrostrat, Tan-y-Graig, Parc Caer Seion, Conwy, LL32 8FA, United Kingdom; BRIDGE, School of Geographical Sciences and Cabot Institute, University of Bristol, University Road, Bristol, BS8 1SS, United Kingdom; NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, NG12 5GG, United Kingdom; Pamukkale University, Department of Geology, Denizli, 20070, Turkey; Department of Geological Research, General Directorate of Mineral Research and Exploration (MTA), Ankara, 06800, Turkey; Naturalis Biodiversity Center, Darwinweg 2, Leiden, 2333 CR, Netherlands; Faculty of Science, Biology Department, Ege University, Bornova, Izmir, Turkey; Dipartimento di Ingegneria e Geologia (InGeo), Università degli Studi “G. d'Annunzio” di C...
推荐引用方式 GB/T 7714	Krijgsman W.,Stoica M.,Hoyle T.M.,et al. The myth of the Messinian Dardanelles: Late Miocene stratigraphy and palaeogeography of the ancient Aegean-Black Sea gateway[J],2020,560.
APA	Krijgsman W..,Stoica M..,Hoyle T.M..,Jorissen E.L..,Lazarev S..,...&Wesselingh F.P..(2020).The myth of the Messinian Dardanelles: Late Miocene stratigraphy and palaeogeography of the ancient Aegean-Black Sea gateway.Palaeogeography, Palaeoclimatology, Palaeoecology,560.
MLA	Krijgsman W.,et al."The myth of the Messinian Dardanelles: Late Miocene stratigraphy and palaeogeography of the ancient Aegean-Black Sea gateway".Palaeogeography, Palaeoclimatology, Palaeoecology 560(2020).