Boundary of Cretaceous and Paleogene continental deposits in Zeya-Bureya Basin,Amur(Heilongjiang)River region

作     者：Valentina S. Markevich Eugenia V. Bugdaeva Abdul R. Ashraf SUN Get 

作者机构：Institute of Biology and Soil Science FEB RAS Vladivostok 690022 Russia Institute of Geosciences University of Tuebingen Tuebingen 72074 Germany Key-Lab for Evolution of Past Life MOEC （Jilin University） Changchun 130026 China College of Paleontology Shenyang Normal University Shenyang 110034 China 

出 版 物：《Global Geology》 (世界地质（英文版）)

年 卷 期：2011年第14卷第3期

页      面：144-159页

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：financial supports given by the NSFC(China,Projects 30220130698,40842002) the Presidium FEBRAS(grant#09-I-P15-02) 

主　　题：palynoflore Cretaceous Paleogene boundary Zeya-Bureya Basin 

摘      要：It was conducted the comparison of palynological assemblages of the Middle Tsagayan,Upper Tsagayan subformations,Furao and Wuyun formations from Zeya-Bureya Basin of Amur (Heilongjiang) River region with assemblages obtained from the marine deposits of Northeast Russia,Sakhalin,Kuril,and Hokkaido Islands,dated by ammonites,foraminifers and other invertebrates. Based on detail correlation,the geological age of the terrestrial beds was defined. The guide fossils are recognized Marsypiletes cretacea,Tricolpites variexi- nus,Aquilapollenites conatus,A. stelkii,A. rombicus,Integricorpus bellum,Pseudointegricorpus clarireticula- tus,Triprojectus amoenus,Orbiculapollis lucidus,Wodehouseia aspera,Quercoidites minor,which had last oc- currence in the late Maastrichtian. The Danian palynofloras usually are dominated by Triatriopollenites plicoides and T. confusus. The species Anacolosidites subtrudens,Aquilapollenites proceros,A. spinulosus have last occurrence in the Danian. The K-T (K-Pg) boundary in the terrestrial deposits is defined in the base of the Upper Tsagayan Subformation and the base of the lower part of the Wuyun Formation. The latter is represented by aleuropelite to fine-grained sandstones. The change of taxonomical composition of palynospectra in similar environments could be determined by real change of flora at the Mesozoic and Cenozoic boundary,but not by changes of lithological facies or depositional environment,generally.