气候变化领域集成服务门户(CCPortal): Sediment-hosted geothermal systems: Review and first global mapping

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DOI	10.1016/j.earscirev.2019.03.020
	Sediment-hosted geothermal systems: Review and first global mapping
	Procesi M.; Ciotoli G.; Mazzini A.; Etiope G.
发表日期	2019
ISSN	0012-8992
起始页码	529
结束页码	544
卷号	192
英文摘要	Sediment-Hosted Geothermal Systems (SHGSs) are hybrid geological systems, where volcanic and sedimentary domains interact, leading to mixtures of inorganic and organic gases. Typically characterized by geothermal (thermometamorphic or mantle-derived) CO 2 and biotic (microbial or thermogenic) CH 4 , SHGSs occur in sedimentary basins crossed by magmatic intrusions or involved in volcanic plumbing systems. These systems can be of considerable interest for petroleum exploration and natural greenhouse-gas emission studies, but systematic studies for their characterization and worldwide distribution are missing. Here, we provide a review of SHGSs identified so far, and propose methodological criteria for their definition and identification, based on integrated geological and gas-geochemical parameters. We find that SHGSs are typically characterized by: (a) fluids dominated by mantle or decarbonation-methamorphic CO 2 (>50 vol%); (b) considerable amounts of CH 4 and heavier hydrocarbons (at least 1.5 vol%, generally up to 30–40 vol%), produced by microbial or thermogenic degradation of organic matter hosted in sedimentary rocks; (c) tectonically active sedimentary basins (back-arc, rift zones and foredeep), generally hosting petroleum fields and within ~300 km from recent or ancient volcanic centers. This analysis resulted in a global map including a first set of 33 SHGSs located in North America, Central and Eastern Europe, Far East, Eastern Oceania and Northern New Zealand, and a second set of potential SHGS prone areas, occurring also in South America, North Africa, Middle East and Kamchatka. The present SHGS map can evolve on the basis of more detailed geological analysis and new gas-geochemical data. © 2019
英文关键词	Carbon dioxide; Geothermal systems; Hydrocarbons; Mapping; Methane; Sediment-hosted geothermal systems; Sedimentary basins; Volcanoes
语种	英语
scopus关键词	carbon dioxide; geological mapping; geothermal system; hydrocarbon exploration; methane; sediment; sedimentary basin; volcano; Central Europe; Far East; Kamchatka; Middle East; New Zealand; North Africa; North America; Russian Federation; South America
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209904
作者单位	Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy; Istituto di Geologia Ambientale e Geoingegneria—CNR-IGAG, Roma, Italy; Centre for Earth Evolution and Dynamics (CEED), University of Oslo, Norway; Faculty of Environm. Science and Engineering, Babes Bolyai University, Cluj-Napoca, Romania
推荐引用方式 GB/T 7714	Procesi M.,Ciotoli G.,Mazzini A.,et al. Sediment-hosted geothermal systems: Review and first global mapping[J],2019,192.
APA	Procesi M.,Ciotoli G.,Mazzini A.,&Etiope G..(2019).Sediment-hosted geothermal systems: Review and first global mapping.EARTH-SCIENCE REVIEWS,192.
MLA	Procesi M.,et al."Sediment-hosted geothermal systems: Review and first global mapping".EARTH-SCIENCE REVIEWS 192(2019).