泰瓦中部奥陶纪地层、相、沉积环境、动物群、化石和古地理

IF 1.2 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Russian Geology and Geophysics Pub Date : 2023-04-28 DOI:10.2113/rgg20234550

N. Sennikov

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引用次数: 0

摘要

––西伯利亚首次发现了一个大型区域规模的奥陶纪大陆盆地。泰瓦奥陶纪岩石中的沉积结构代表了河流、牛轭湖、沙丘、河流三角洲、潮汐和海岸平原的沉积环境。鱼类化石记录了从淡水（湖泊-河流）到三角洲和潮汐相的序列。对泰瓦中部沉积岩的综合研究表明，它们沉积在一个大型河流三角洲内的沿海平原上。泰瓦-奥陶纪中部盆地与冈瓦纳大陆的同时代盆地相似，具有碎屑沉积和红层沉积的风格。

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Ordovician Stratigraphy, Facies, Deposition Environments, Faunas, Ichnofossils, and Paleogeography of Central Tyva

––A large regional-scale Ordovician continental basin has been revealed for the first time in Siberia. Sedimentary structures in the Ordovician rocks of Tyva represent deposition environments of rivers, oxbow lakes, dunes, river deltas, tidal, and coastal plains. Ichnofossils record a succession from freshwater (limnic-fluvial) to deltaic and tidal facies. Integrated studies of sedimentary rocks from Central Tyva show that they were deposited on a coastal plain within a large river delta. The Central Tyva Ordovician basin was similar to the coeval basins of the Gondwanian continents in the style of clastic and redbed deposition.

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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.