西伯利亚地台东南部RIPHEAN潜在油气源矿床的同位素地球化学调查

Q4 Earth and Planetary Sciences

Geology and Mineral Resources of Siberia Pub Date : 2022-03-01 DOI:10.20403/2078-0575-2022-1-48-56

S. I. Golyshev, P. Sobolev, N. L. Padalko, S. I. Dykhan, P. F. Yavorov, M. I. Prazdnichnykh, E. V. Chernikov

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引用次数: 0

摘要

通过对岩石碳酸盐组分（CCR）和分散有机质碳（DOM）的碳氧同位素组成的研究，揭示了西伯利亚地台东南部中Riphean Totinskaya组和Malginskaya组以及上Riphean Lakhandinian系列沉积的相条件。确定了西伯利亚地台阿尔丹-马亚沉积盆地中Riphean domanic组的主要同位素标准。考虑了形成马尔金斯卡亚组圆顶状矿床所必需的内外因素。提出了导致中上游Riphean沉积物中13C含量异常低的机制，其范围为–33.0…–35.0‰。在同位素数据的基础上，对Aldan Maya凹陷内的潜在源层层位进行了检查。

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ISOTOPIC AND GEOCHEMICAL SURVEY OF POTENTIALLY OIL-AND-GAS SOURCE DEPOSITS OF THE RIPHEAN IN THE SOUTH-EAST OF THE SIBERIAN PLATFORM

Based on the study of the carbon and oxygen isotopic composition of the carbonate constituent of rocks (CCR) and carbon of dispersed organic matter (DOM), the facies conditions of sedimentation of the Middle Riphean Totinskaya and Malginskaya formations and Lakhandinian series of the Upper Riphean in the southeast of the Siberian Platform were revealed. The main isotopic criteria of the Middle Riphean domanicoid formation within the Aldan-Maya sedimentary basin of the Siberian Platform have been determined. The exogenous and endogenous factors necessary for the formation of domanicoid deposits of the Malginskaya Formation are considered. A mechanism leading to the formation of abnormally low 13C content in the Middle and Upper Riphean sediments with a range of –33.0...–35.0 ‰ is proposed. On the basis of isotopic data potentially-enable source-bed horizons within the Aldan-Maya depression are examined.

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来源期刊

Geology and Mineral Resources of Siberia Earth and Planetary Sciences-Geology

CiteScore

0.30

自引率

0.00%

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