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Stratigraphic distribution of the radiolarian Spongodiscus biconcavus Haeckel at IODP Site U1340 in the Bering Sea and its paleoceanographic significance
Chen, MH; Zhang, Q; Zhang, LL; Zarikian, CA; Wang, RJ; mhchen@scsio.ac.cn; zhang_qiang6142@yahoo.com.cn; llzhang@scsio.ac.cn; zarikian@iodp.tamu.edu; rjwangk@online.sh.cn
2014
Source PublicationPALAEOWORLD
ISSN1871-174X
Volume23Issue:1Pages:90-104
AbstractThe temporal and spatial distributions of the radiolarian species Spongodiscus biconcavus Haeckel are investigated to understand the paleoceanographic evolution of the Bering Sea region during the last 4.3 Myr based on extensive study of samples collected at Site U1340 during the IODP Expedition 323. The biostratigraphic resolution for the region is also improved by multidisciplinary studies of radiolarians, diatoms, dinoflagellates, ebridians, and silicoflagellates. The results demonstrate that the abundance variation of S. biconcavus during the last 4.3 Myr is closely related to global climate changes, and the species can be used as a warm water and climate proxy in the Bering Sea. Based on the downhole profiles of S. biconcavus and other parameters, we conclude that the southern Bering Sea was associated with a warm water mass prior to 3.147 Ma but it gradually cooled thereafter. From 2.793 Ma to 0.889 Ma, a cold water mass and sea-ice predominated in the Bering Sea, in response to the early Northern Hemisphere glaciation (NHG). Furthermore, the climate suddenly became much cooler post 0.889 Ma. Nevertheless, a reversal of this cooling trend occurred after the Mid-Pleistocene Climatic Transition (-1.2 Ma), marked by reoccurrence of warm water and reduced sea-ice in the Bering Sea until the final retreat of warm water mass from the Bering Sea after 0.239 Ma. These processes are correlated with biogeographic expansion and retreat of warm water planktonic species. (C) 2013 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
Department[Chen, Mu-Hong ; Zhang, Qiang ; Zhang, Lan-Lan] Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Zarikian, Carlos Alvarez] Texas A&M Univ, College Stn, TX 77845 USA ; [Wang, Ru-Jian] Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
KeywordRadiolarian Spongodiscus Biconcavus Paleoceanography Nhg Bering Sea Integrated Ocean Drilling Program (Iodp) Site U1340
Subject AreaPaleontology
Funding OrganizationNSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102]
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Indexed Bysci
Funding Project海洋地质
Funding OrganizationNSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102] ; NSFC [41076026, 40906030, 41030859]; National Key Project for Basic Research of China [2013CB956102]
WOS IDWOS:000332271400007
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Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10642
Collection中科院边缘海地质重点实验室
Corresponding Authormhchen@scsio.ac.cn; zhang_qiang6142@yahoo.com.cn; llzhang@scsio.ac.cn; zarikian@iodp.tamu.edu; rjwangk@online.sh.cn
Recommended Citation
GB/T 7714
Chen, MH,Zhang, Q,Zhang, LL,et al. Stratigraphic distribution of the radiolarian Spongodiscus biconcavus Haeckel at IODP Site U1340 in the Bering Sea and its paleoceanographic significance[J]. PALAEOWORLD,2014,23(1):90-104.
APA Chen, MH.,Zhang, Q.,Zhang, LL.,Zarikian, CA.,Wang, RJ.,...&rjwangk@online.sh.cn.(2014).Stratigraphic distribution of the radiolarian Spongodiscus biconcavus Haeckel at IODP Site U1340 in the Bering Sea and its paleoceanographic significance.PALAEOWORLD,23(1),90-104.
MLA Chen, MH,et al."Stratigraphic distribution of the radiolarian Spongodiscus biconcavus Haeckel at IODP Site U1340 in the Bering Sea and its paleoceanographic significance".PALAEOWORLD 23.1(2014):90-104.
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