Sedimentary facies of Maastrichtian to Danian deposits in Amur River area, Russian Far East东北亚地学研究：英文版论文
【题名】：Sedimentary facies of Maastrichtian to Danian deposits in Amur River area, Russian Far East东北亚地学研究：英文版论文(Sedimentary facies of Maastrichtian to Danian deposits in Amur River area, Russian Far EastDongBeiYaDiXueYanJiu：YingWenBanLunWen) 【关键词】：河流沉积 Tsagayan结构 Zeya-Bureya盆地 阿穆尔河 分布规律 【keywords】：HeLiuChenJi TsagayanJieGou Zeya-BureyaPenDi AMuErHe FenBuGuiLv 【作者】：ShigeyukiSuzuki,AbdulR.Ashraf,HakuyuOkada,      【来源】： 知识词典 【期刊名称】：东北亚地学研究：英文版(DongBeiYaDiXueYanJiu：YingWenBan) 【国际标准刊号】：1008-0503        【国内统一刊号】：22-1267/P 【作者单位】：[1]DepartmentofEarthSciences,FacultyofScience,OkayamaUniversity,Okayama700-8530,Japan [2]InstituleofGeosciences,UniversityofTuebingen,TuebingenD-72076,Germany [3]4-8-36-601Yoshizuka,Hakata-ku,Fukuoka812-0041,Jopan([1]DepartmentofEarthSciences,FacultyofScience,OkayamaUniversity,Okayama700-8530,Japan [2]InstituleofGeosciences,UniversityofTuebingen,TuebingenD-72076,Germany [3]4-8-36-601Yoshizuka,Hakata-ku,Fukuoka812-0041,Jopan) 【分类号】：P343.1 P512.2      【页码】：-149-155      【出版年】：2004.2 【下载地址】：下载pdf全文         Sedimentary facies of the Tsagayan Formation is distributed in the eastern Zeya-Bureya Basin has been analyzed. The formation is of the Maastrichtian to Danian in age and characterized by the cyclicity of the fining-upwards successions. Analysis of environmental changes during the K/T boundary is the focus of this study. Five facies have been identified: Facies A, thick and laterally extensive coarse-grained to medium-gained sandstone units, interpreted as channelfill deposits; Facies B, parallel-laminated to massive mudstone units interpreted as interchannel lakes and flood plain deposits; Facies C, sheet-like medium-grained to fine-grained sandstones interpreted as crevasse splay deposits; Facies D, coal to coaly mudstone beds interpreted as deposits of peatlands; Facies E, very poorly sorted sandy mudstone beds interpreted as debris flow deposits. Fluvial environments with the low-relief fiat topography was inferred. A channel transported large volumes of clasts, and a flood basin with interchannel lakes and peatlands was deciphered. Any distinct change of sedimentary environments has not been identified throughout the Tsagayan Formation (including the K/T boundary). However, two beds of debris flow deposits were identified. The one occurs at the uppermost part of the lower Tsagayan Subformation and contains dinosaur fossils. The other is intercalated in the upper Tsagayan Subformation.
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