DOI: 10.1016/j.earscirev.2019.03.020
论文题名: Sediment-hosted geothermal systems: Review and first global mapping
作者: Procesi M. ; Ciotoli G. ; Mazzini A. ; Etiope G.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 192 起始页码: 529
结束页码: 544
语种: 英语
中文关键词: Carbon dioxide
; Geothermal systems
; Hydrocarbons
; Mapping
; Methane
; Sediment-hosted geothermal systems
; Sedimentary basins
; Volcanoes
英文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165910
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Procesi M.,Ciotoli G.,Mazzini A.,et al. Sediment-hosted geothermal systems: Review and first global mapping[J]. Earth Science Reviews,2019-01-01,192