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

查看全文 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 [1]Z.L. 机构地区：[1]Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Geological Institute of Russian Academy of Sciences(RAS),Moscow,109017,Russia Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Institute of Geology & Paleontology,Tuebingen University,Tuebingen,D-72076,Germany Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Institute of Biology & Pedology,FEBRAS,Vladivostok,690022,Russia Florida Museum of Natural History,University of Florida,Gainesville FL,32611-7800,USA Botanical Institute of RAS,St.-Petersburg,197376,Russia School of Ocean & Geosciences,University of Southampton,Southampton,SO14,3ZH UK Denver Museum of Nature & Sciences,Denver CO,80205,USA Amur Research Integrated Institute,FEBRAS,Blagoveschesk,675000,Russia Geological Institute of Russian Academy of Sciences(RAS),Moscow,109017,Russia Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Institute of Biology & Pedology,FEBRAS,Vladivostok,690022,Russia Chuo University,Tokyo,112-8551,Japan Oyo Corporation,Fukuoka,811-1302,Japan Dept. Of Geology,Kyungpook National University,Daegu,702-201,Korea Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Research Center of Paleontology & Stratigraphy,Jilin University,Changchun,130026,China Geological Museum of Heilongjiang,Harbin,150036,China Geological Museum of Heilongjiang,Harbin,150036,China 出　　处：《Global Geology》索引2002年第7卷第2期,共9页 基　　金：The authors are grateful for the Project,国家自然科学基金 摘　　要：Abstract A new geological section recognized in Baishantou of Jiayin, Heilongjiang Province, China, was studied preliminarily in searching for the K/T boundary. An 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 section. The 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, Russia. The 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 area. Further 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