DOI: 10.1306/07221413135
Scopus记录号: 2-s2.0-84919341368
论文题名: Deformation conditions for fracturing in the Middle Devonian sequence of the central Appalachians during the Late Paleozoic Alleghenian orogeny
作者: Evans M.A. ; De Lisle A. ; Leo J. ; Lafonte C.J.
刊名: AAPG Bulletin
ISSN: 0149-1621
EISSN: 1558-9351
出版年: 2014
发表日期: 2014
卷: 98, 期: 11 起始页码: 2263
结束页码: 2299
语种: 英语
Scopus关键词: Deformation
; Fracture
; Geochronology
; Hydrocarbons
; Isotopes
; Landforms
; Mineralogy
; Minerals
; Oil shale
; Quartz
; Brine inclusions
; Carbon stable isotopes
; Classification models
; Deformation conditions
; Fluid inclusion microthermometry
; Fold-thrust belts
; Hydrocarbon fluids
; Valley and Ridge
; Loading
; Alleghanian orogeny
; brine
; carbon
; deformation mechanism
; Devonian
; fluid dynamics
; fluid inclusion
; fold and thrust belt
; fracture
; hydrocarbon
; mineralization
; oxygen
; quartz
; shale
; stable isotope
; syntectonic sediment
; thermomechanics
; vein (geology)
; Appalachians
; Pennsylvania
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: In the central Appalachians, fluid inclusion microthermometry and oxygen and carbon stable isotope analysis vein minerals from the Middle Devonian shale section show that fluid conditions (pressure, temperature, and composition) are constantly changing during deformation and vary spatially across the fold-thrust belt. The earliest fractures in the region formed prior to folding, early during the Alleghenian orogeny as the rocks were buried into the oil generation window. They contain minerals that contain degraded hydrocarbon inclusions and basinal brine inclusions. During multiple vein reopening events, later mineral stages contain increasingly more mature hydrocarbon fluids. Late quartz mineralization is pervasive and typically contains the hightemperature brine inclusions. The vein opening history is related to changes in fluid connectivity associated with (1) burial by over-thrusting and/or syntectonic depositional loading and/or (2) folding during uplift and erosion. Initial fracture formation and fluid-trapping depths range from 3.5 km (2.2 mi) in the Plateau province and along the Appalachian structural front to 4.5 to 5.0 km (2.8 to 3.1 mi) in the Valley and Ridge province. Late-stage fracturing and fracture reopening is related to the maximum syntectonic burial, which varies from about 4 km (2.5 mi) in the Plateau to over 11 km (6.8 mi) in the Valley and Ridge. Fractures in the Valley and Ridge and western Pennsylvania Plateau provinces cannot be categorized into the simple J1 and J2 classification model. Burial history modeling indicates that fractures forming within and near the end of the oil window were NNW- and NW-striking, not ENE-striking, J1 fractures. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919341368&doi=10.1306%2f07221413135&partnerID=40&md5=593196fb39c8699460c75de332eedb48
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13191
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:
Evans M.A.,De Lisle A.,Leo J.,et al. Deformation conditions for fracturing in the Middle Devonian sequence of the central Appalachians during the Late Paleozoic Alleghenian orogeny[J]. AAPG Bulletin,2014-01-01,98(11)