北提曼(苏拉河煤田)上泥盆统煤的地质地球化学特征

IF 1.2 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Russian Geology and Geophysics Pub Date : 2023-09-19 DOI:10.2113/rgg20234283

D.A. Bushnev, N.S. Burdel’naya, S.M. Snigirevsky, P.A. Beznosov, O.S. Kotik, N.V. Pronina, A.A. Grin’ko

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引用次数: 0

摘要

摘要/ Abstract摘要:全面研究了天—北乌拉尔地区最古老煤的组成，给出了煤的烃和微组分特征。揭示了北提曼地区不同类型煤与晚泥盆世植物群落的关系。还确定一些样品含有小孢子、大孢子和主要属于石松属的植物残骸。喷气煤最可能的来源是原裸子植物梭梭木的木材。镜质体反射率和Tmax值以及多环生物标志物和甲基菲的分布特征表明煤有机质成熟度较低。本文研究的煤沥青以甾烷和C28和C29组成的13(17)-烯为主。鉴定出以下二萜:壬烷、16α(H)-kaurane、16β(H)-kaurane和16α(H)-atisane。同时，phyllocladane不存在。

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Geologic and Geochemical Features of the Upper Devonian Coals of the North Timan (the Sula River Coal Field)

Abstract —The composition of the oldest coals of the Timan–northern Urals region has been studied comprehensively, and their hydrocarbon and microcomponent characteristics are given. The relationship between different types of coals and Late Devonian plant communities of the North Timan is revealed. It is also determined that some samples contain microspores, megaspores, and plant remains belonging mainly to the lycopod Helenia. The most probable source of jet coals is identified as the wood of the progymnosperm Callixylon. The values of vitrinite reflectance and Tmax and the data on the distribution of polycyclic biomarkers and methylphenanthrenes indicate the low maturation of the coal organic matter. The coal bitumen investigated here is characterized by the dominance of steranes and diaster-13(17)-enes of compositions C28 and C29. The following diterpanes are identified: beyerane, 16α(H)-kaurane, 16β(H)-kaurane, and 16α(H)-atisane. At the same time, phyllocladane is absent.

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来源期刊

Russian Geology and Geophysics 地学-地球科学综合

CiteScore

2.00

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal publishes original reports of theoretical and methodological nature in the fields of geology, geophysics, and geochemistry, which contain data on composition and structure of the Earth''s crust and mantle, describes processes of formation and general regularities of commercial mineral occurrences, investigations on development and application of geological-geophysical methods for their revealing. As to works of regional nature, accelerated publication are available for original papers on a variety of problems of comparative geology taking into account specific character of Siberia, adjacent Asian countries and water areas. The journal will also publish reviews, critical articles, chronicle of the most important scientific events, and advertisements.