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In Search of the Cretaceous-Tertiary Boundary in Heilongjiang River Area of China

Global Geology 2002年第2期7卷 105-113页

作者： Sun G. M.Akhmetiev Dong Z.M. A.R.Ashraf Sun Y.W. E.Bugdaeva D.L.Dilcher L.Golovneva I.Harding K.Johnson T.Kezina T.Kodrul LU J.S. V.Markevich H.Nishida H.Okada Park S.O. Sun C.L. Xiong X.Z. Xing Y.L. Zhou Z.L. Research Center of Paleontology&Stratigraphy Jilin UniversityChangchun130026China Geological Institute of Russian Academy of Sciences(RAS) Moscow109017Russia Institute of Geology&Paleontology Tuebingen UniversityTuebingenD-72076Germany Institute of Biology&Pedology FEBRASVladivostok690022Russia Florida Museum of Natural History University of FloridaGainesville FL32611-7800USA Botanical Institute of RAS St.-Petersburg197376Russia School of Ocean&Geosciences University of SouthamptonSouthamptonSO143ZH UK Denver Museum of Nature&Sciences Denver CO80205USA Amur Research Integrated Institute FEBRASBlagoveschesk675000Russia Chuo University Tokyo112-8551Japan Oyo Corporation Fukuoka811-1302Japan Dept.Of Geology Kyungpook National UniversityDaegu702-201Korea Geological Museum of Heilongjiang Harbin150036China

A new geological section recognized in baishantou of Jiayin,Heilongjiang Province,China,was studied preliminarily in searching for the K/T *** early Paleocene florule characrerized by abundant Tiliaephyllum tsagajanicum leaves and its associated plants,was collected from the baishantou Member(new member representing the lower part of the Paleocene Wuyun Formation)overlying the possible K/T boundary.A tuff bed was found from the upper part of the Furao Formation(uppermost Cretaceous)in this *** new findings imply that the K/T boundary is probable lying in the interval between the base of the baishantou Member and the tuff bed,based on the correlation of the present strata with the stratotype of the Tsagajan Group spanning the K/T boundary in"Belaya Gara"of the Bureya Basin,*** early Paleocene florule from the baishantou Member and the early-middle Maastrichtian dinosaurs found from the Yuliangzi Formation underlying the Furao Formation suggest that the baishantou section is more promising for searching for the K/T boundary in this *** studies of the section is needed,integrating paleontological,biostratigraphic,geochemical,paleomagnetic,and sedimentary research would benefit our understanding the mass extinction event and biotic recovery in the Heilongjiang River area,China,and even all of northeast Asia during the K/T boundary interval.

关键词： K/T boundary Early Paleocene baishantou Member Jiayin Heilongjiang River

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