DOI: 10.1306/07121111008
Scopus记录号: 2-s2.0-84857884318
论文题名: A new oil-window indicator? The magnetic assemblage of clay stones from the Baffin Bay volcanic margin (Greenland)
作者: Abdelmalak M.M. ; Aubourg C. ; Geoffroy L. ; Laggoun-Defarge F.
刊名: AAPG Bulletin
ISSN: 0149-1797
EISSN: 1558-9527
出版年: 2012
发表日期: 2012
卷: 96, 期: 2 起始页码: 205
结束页码: 215
语种: 英语
Scopus关键词: Claystones
; Greenland
; Greigites
; High temperature
; Independent parameters
; Isothermal remanent magnetization
; Low temperatures
; Magnetic minerals
; Paris Basin
; Petroleum exploration
; Rock-Eval pyrolysis
; Sedimentary basin
; Stoichiometric magnetite
; Switzerland
; Vitrinite reflectance
; Volcanic margin
; Hydrocarbons
; Iron ores
; Volcanoes
; Magnetism
; burial (geology)
; claystone
; Cretaceous
; data set
; hydrocarbon exploration
; isotherm
; magnetic field
; petroleum hydrocarbon
; pyrolysis
; pyrrhotite
; sedimentary basin
; temperature effect
; vitrinite
; volcanic landform
; Arctic
; Arctic Ocean
; Baffin Bay [Arctic Ocean]
; France
; Greenland
; Jura Mountains
; Paris Basin
; Switzerland
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Identifying independent parameters to bracket the oil window in sedimentary basins is of first importance for petroleum exploration. We investigate the magnetic assemblage of Cretaceous claystones collected from the western volcanic margin of Greenland. These claystones experienced low-grade burial (<5 km). To assess the maturity of organic matter, we measured the vitrinite reflectance (R o) and the temperature at maximum release of hydrocarbons (T max) that occurs during Rock-Eval pyrolysis. These data (0.37% ≤ RQ ≤ 2%, 422°C ≤ T max ≤ 604°C) show that most claystones are immature to mature with respect to the oil window. We suggest that magnetic minerals can be an indication of burial temperature. The magnetic assemblage of the same samples is elucidated by low-temperature (≤300 K) and high-temperature (≥300 K) properties of isothermal remanent magnetization. The magnetic assemblage of immature claystones (lower RJ resides in goe-thite, greigite, and some magnetite. The magnetic assemblage of immature to early mature claystones (higher RJ resides in stoichiometric magnetite and fine-grained pyrrhotite. By comparing these results with those from claystones from the Paris Basin (France) and the Jura Mountains (Switzerland), we suggest the existence of similar mechanisms for the formation of magnetic minerals during burial. If confirmed by further studies, the magnetic assemblage of claystones may be diagnostic of oil windows. Copyright © 2012. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857884318&doi=10.1306%2f07121111008&partnerID=40&md5=a353822b7398fcb92a3cc70a55408bd2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13367
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Abdelmalak M.M.,Aubourg C.,Geoffroy L.,et al. A new oil-window indicator? The magnetic assemblage of clay stones from the Baffin Bay volcanic margin (Greenland)[J]. AAPG Bulletin,2012-01-01,96(2)