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Hydrothermal circulation and oil migration at the root of the heterogeneous micro-structure of carbonaceous material in the 2.0 Ga Zaonega Formation, Onega Basin, Russia

文献类型：期刊论文

作者Qu, Yuangao4,5,6; van Zuilen, Mark A.3; Lepland, Aivo1,2
刊名PRECAMBRIAN RESEARCH
出版日期2020-07-01
卷号343页码:12
关键词Proterozoic Hydrothermal fluids Carbonaceous material Raman spectroscopy
ISSN号0301-9268
DOI10.1016/j.precamres.2020.105705
英文摘要Organic-rich rocks of the 2.0 Ga Zaonega Formation, Karelia, Russia, have been studied extensively to gain understanding of the global carbon cycle and reconstruction of paleo-environments, directly after the Great Oxidation Event (GOE). This formation has a complex history of alteration, involving pervasive hydrothermal circulation, hydrocarbon generation/migration, and mineral authigenesis. Several previous studies have focused on the description of these secondary effects, and the identification of primary geochemical signals in the carbonaceous phases. Migration and infiltration of organic-rich fluids appear to have had only limited effect on the primary carbon isotope record (delta C-13(org)). However, the structural variability of carbonaceous material (CM) appears to have been strongly affected, with a range of reported structures including carbon onion-shaped nanostructures and mineral-templated graphite films. Here we present a systematic Raman spectroscopy-based study of the structural variability of CM in a drill core representing the middle and upper strata of the Zaonega Formation. The Raman spectra of CM show a systematic difference in structural order between the bulk carbonaceous matrix (Matrix-CM) and the CM occurring near mineral contacts (Contact-CM), indicating that mineral templating was an important process affecting structural order in the formation. The templating effect was observed on the surface of a wide range of minerals. The difference in structural order between Matrix-CM and Contact-CM can be traced throughout the ca. 400 m stratigraphy. The structural order varied with the degree of alteration and hydrothermal circulation, from highly ordered structures directly above a large gabbro intrusion at the bottom of the stratigraphy to less ordered structures higher up in the sequence. This trend directly correlates with the delta O-18 trend of secondary calcite, and can be attributed to the decreasing influence and temperature regime of hydrothermal circulation upward in the stratigraphy. The results presented here suggest that organic-rich hydrothermal fluids can locally strongly enhance graphitization of carbonaceous materials, and cause sample-scale heterogeneities in the structural order of organic materials. This has implications for the interpretation of carbonaceous materials in other ancient rocks experiencing circulation of organic-rich hydrothermal fluids.
WOS关键词STRUCTURAL-CHARACTERIZATION ; MATERIAL GEOTHERMOMETER ; RAMAN-SPECTRUM ; APEX CHERT ; NW RUSSIA ; ROCKS ; SHUNGITE ; KARELIA ; SCALE ; APPLICABILITY
资助项目National Key RD Program[2018YFC0309800] ; National Natural Science Foundation of China[41972204] ; Hundred Talent Program C of China[Y810011BRC] ; European Research Council under the European Union[646894]
WOS研究方向Geology
语种英语
WOS记录号WOS:000532835600002
出版者ELSEVIER
资助机构National Key RD Program ; National Natural Science Foundation of China ; Hundred Talent Program C of China ; European Research Council under the European Union
源URL[http://ir.idsse.ac.cn/handle/183446/7567]  
专题深海科学研究部_地外海洋系统研究室
通讯作者van Zuilen, Mark A.
作者单位1.Univ Tartu, Dept Geol, Tartu, Estonia
2.Geol Survey Norway, Trondheim, Norway
3.Univ Paris, Inst Phys Globe Paris, CNRS, Equipe Geomicrobiol, Paris, France
4.Univ Bergen, Ctr Geobiol, Dept Earth Sci, Bergen, Norway
5.Swedish Museum Nat Hist, Dept Paleobiol, Stockholm, Sweden
6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
推荐引用方式
GB/T 7714		 Qu, Yuangao,van Zuilen, Mark A.,Lepland, Aivo. Hydrothermal circulation and oil migration at the root of the heterogeneous micro-structure of carbonaceous material in the 2.0 Ga Zaonega Formation, Onega Basin, Russia[J]. PRECAMBRIAN RESEARCH,2020,343:12.
APA Qu, Yuangao,van Zuilen, Mark A.,&Lepland, Aivo.(2020).Hydrothermal circulation and oil migration at the root of the heterogeneous micro-structure of carbonaceous material in the 2.0 Ga Zaonega Formation, Onega Basin, Russia.PRECAMBRIAN RESEARCH,343,12.
MLA Qu, Yuangao,et al."Hydrothermal circulation and oil migration at the root of the heterogeneous micro-structure of carbonaceous material in the 2.0 Ga Zaonega Formation, Onega Basin, Russia".PRECAMBRIAN RESEARCH 343(2020):12.

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来源：深海科学与工程研究所

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