DOI: 10.1306/06301413006
Scopus记录号: 2-s2.0-84927124986
论文题名: Neoformed magnetic minerals as an indicator of moderate burial: The key example of middle Paleozoic sedimentary rocks, West Virginia
作者: Kars M. ; Aubourg C. ; Suárez-Ruiz I.
刊名: AAPG Bulletin
ISSN: 0149-1506
EISSN: 1558-9236
出版年: 2015
发表日期: 2015
卷: 99, 期: 3 起始页码: 389
结束页码: 401
语种: 英语
Scopus关键词: Geochronology
; Iron ores
; Lithology
; Magnetism
; Magnetite
; Sedimentology
; Shale
; Stratigraphy
; Temperature
; Alteration indices
; Low temperatures
; Magnetic minerals
; Magnetic studies
; Marcellus shales
; Microthermometry
; Stratigraphic intervals
; Vitrinite reflectance
; Sedimentary rocks
; Devonian
; Paleozoic
; pyrrhotite
; sandstone
; sedimentary rock
; shale
; Silurian
; stratigraphy
; United States
; Virginia
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: In order to help unravel the thermal history of middle Paleozoic sedimentary rocks in West Virginia, a rock magnetic study was conducted with a focus on the Marcellus Shale. Vitrinite reflectance, fluid inclusions microthermometry and conodont alteration index data yield contradictory burial temperature within the range 150-250°C (302-482°F). The characterization of magnetite and pyrrhotite may be used as an index to track burial temperature around 200°C (392°F). Low-temperature and room-temperature magnetic measurements were performed in order to determine the magnetic assemblage. Three magnetic assemblages were identified that were stratigraphically distributed. The goethite and nanosized magnetite (Al) assemblage is mainly found in the Clinton Group-Oriskany Sandstone stratigraphic interval (Silurian-Lower Devonian). Nanosized fraction of magnetite and probably pyrrhotite (A3) assemblage essentially constitutes the Marcellus Shale-Chemung Formation sequence (Devonian). Microsized pyrrhotite is the typical mineral for A2 that is only identified near the Alleghenian structural front. Overall, the rare occurrence of micron pyrrhotite in our samples suggests that the study area has not experienced burial temperatures higher than 200°C (392°F). Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927124986&doi=10.1306%2f06301413006&partnerID=40&md5=1228816cf75dfa84adb28f3cb27b8b4a
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13077
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
There are no files associated with this item.
Recommended Citation:
Kars M.,Aubourg C.,Suárez-Ruiz I.. Neoformed magnetic minerals as an indicator of moderate burial: The key example of middle Paleozoic sedimentary rocks, West Virginia[J]. AAPG Bulletin,2015-01-01,99(3)