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| Keywords | |
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Biota |
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Late Cretaceous |
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Paleogene |
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K--Pg boundary |
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Heilongjiang River |
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Jiayin |
| Authors | |
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Sun G.1 |
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2 |
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Akhmetiev M.3 |
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Markevich |
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V.4 |
| PubMed | |
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Article by Sun G.1 |
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Article by 2 |
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Article by Akhmetiev M.3 |
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Article by Markevich |
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Article by V.4 |
Late Cretaceous biota and the Cretaceous-Paleogene ( K--Pg) Boundary in Jiayin of Heilongjiang��China
Sun G.1, 2, Akhmetiev M.3, Markevich V.4, Ashraf A.R.5, Bugdaeva E.4, Godefroit P.6, Bolotsky Yu.7, Dong Z.M.8,9, Golovneva L.10, Yang H.X.11, Sun C.L.9, Sun Y.W.9, Quan C.9, Kodrul T.3
1�� Key-Lab for Evolution of Past Life��MOEC��( Jilin University) ��Changchun 130026��China; 2�� College of Paleontology��Shenyang Normal University��Shenyang 110034��China; 3�� Geological Institute of RAS��Moscow 109017��Russia; 4�� Institute of Biology and Soil Science��FEB RAS��Vladivostok 690022��Russia; 5�� Institute of Geosciences��University of Tuebingen��Tuebingen 72074��Germany; 6�� Royal Belgian Institute of Natural Sciences��Dept�� of Palaeontology��B �� 1000 Bruxelles��Belgium; 7�� Amur Natural History Museum��IGNE FEB RAS��Blagoveschensk 675000��Russia; 8�� IVPP��Beijing 100044��China; 9�� Research Center of Paleontology �� Stratigraphy��Jilin University��Changchun 130026��China; 10�� Komarov Botanical Institute��RAS��St�� -Petersburg 197376��Russia; 11�� College of Geoexploration Science �� Technology��Jilin University��Changchun 130026��China; 12�� Amur State University��Blagoveshensk 675000��Russia; 13�� Denver Museum of Natural Sciences��Denver CO-90205��USA; 14�� Chuo University��Tokyo 112��Japan; 15�� Indiana University��Bloomington��IN 47405��USA; 16�� School of Ocean �� Geosciences��University of Southampton��Southampton��SO14��3ZH UK
An international cooperative study of the Late Cretaceous biota and non-marine strata including the Cretaceous-Paleogene ( K--Pg) boundary in Jiayin near the Heilongjiang River��China during 2002-2010��is summarized in this paper�� The strata includes the Upper Cretaceous Yong'ancun-��Taipinglinchang-��Yuliangzi-�� and Furao formations��and the Paleocence Wuyun Formation consisting of Baoshantou Member and a Coalbearing Member�� Seven palynological assemblages from Santonian to Paleocene are recognized��which is used for definition of the K--Pg boundary�� Through the palynological analysis of three drilled boreholes ( XHY-2005�� 2006��2008) in Xiaoheyan of western Jiayin��the K--Pg boundary is defined within 20. 00-20. 05 m in the borehole XHY-2006 ( as a standard boundary) which is just between the top of Furao Formation ( late Maasterichtian) and the base of Baishantou Member ( early Danian) �� These new research results are supported by paleomagnetic�� geochemical and other analyses��also�� On the other hand��the presence of eight taxa of Maasterichtian dinosaurs ( mostly hadrosaurids) have been recognized by the authors; and two mega-plant assemblages from the Yong'ancun Fm ( Santonian) to Taipinglinchang Fm ( Campanian) are confirmed�� These research achievements indicate that the Upper Cretaceous-Paleocene in Jiayin can be well correlated to the strata in the neighboring Zeya-Bureja basin��Russia�� The K--Pg boundary definited in Jiayin is the first well documented non-marine K--Pg boundary in China�� Also the related paleoclimate��paleoenvironment and the mass extinctions in this area during the Cretaceous-Paleocene transition are also discussed��