Palynostratigraphy of the Erkovtsy field of brown coal (the Zeya-Bureya sedimentary basin)

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作者
T. V. Kezina
N. D. Litvinenko
机构
[1] Russian Academy of Sciences,Amur State University, Institute of Geology and Nature Management, Far East Division
[2] FGUGP Dal’geologiya,Central Laboratory
关键词
palynostratigraphy; Kivda Beds; Cenozoic; Tsagayan Formation; brown coal field;
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摘要
The Erkovtsy brown coal field in the northwestern Zeya-Bureya sedimentary basin (129°–130° E, 46°–47° N) is structurally confined to southern flank of the Mesozoic-Cenozoic Belogor’e depression. The verified stratigraphic scheme of the coalfield sedimentary sequence is substantiated by palynological data on core samples from 18 boreholes sampled in the course of detailed prospecting and by paleobotanical analysis of sections in the Yuzhnyi sector of the coalfield (data of 1998 by M.A. Akhmetiev and S.P. Manchester). Sections of the Erkovtsy, Arkhara-Boguchan, and Raichikha brown-coal mines are correlated. Stratigraphic subdivisions distinguished in the studied sedimentary succession are the middle and upper Tsagayan subformations (the latter incorporating the Kivda Beds), Raichikha, Mukhino, Buzuli, and Sazanka formations.
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页码:385 / 400
页数:15
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