DOI: 10.1306/08231312124
Scopus记录号: 2-s2.0-84898079851
论文题名: Sequence striating and depositional environments of the Shamokin (Union Springs) Member, Marcellus Formation, and associated strata in the middle Appalachian Basin
作者: Kohl D. ; Slingerland R. ; Arthur M. ; Bracht R. ; Engelder T.
刊名: AAPG Bulletin
ISSN: 0149-1580
EISSN: 1558-9310
出版年: 2014
发表日期: 2014
卷: 98, 期: 3 起始页码: 483
结束页码: 513
语种: 英语
Scopus关键词: Analytical geochemistry
; Carbon
; Organic carbon
; Shale
; Appalachian basin
; Basement faults
; Carbonate banks
; Depositional environment
; Depositional sequences
; Geochemical analysis
; Stratified basin
; Transgressive systems tracts
; Deposition
; carbonate
; depositional sequence
; eustacy
; facies
; fault
; mudstone
; reactivation
; shale
; systems tract
; uplift
; Appalachian Basin
; Harrisburg
; Illinois
; Pennsylvania
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Organic-carbon-rich shales of the lower Marcellus Formation were deposited at the toe and basinward of a prograding clinothem associated with a Mahantango Formation delta complex centered near Harrisburg, Pennsylvania. Distribution of these organic-carbon-rich shales was influenced by shifts in the delta complex driven by changes in rates of accommodation creation and by a topographically high carbonate bank that formed along the Findlay-Algonquin arch during deposition of the Onondaga Formation. Specifically, we interpret the Union Springs member (Shamokin Member of the Marcellus For-mation) and the Onondaga Formation as comprising a single third-order depositional sequence. The Onondaga Formation was deposited in the lowstand to transgressive systems tract, and the Union Springs member was deposited in the trans-gressive, highstand, and falling-stage systems tract. The regional extent of parasequences, systems tracts, and the interpreted depositional sequence suggest that base-level fluctuations were primarily caused by allogenic forcing-eustasy, climate, or regional thermal uplift or subsidence-instead of basement fault reactivation as argued by previous workers. Paleowater depths in the region of Marcellus Formation black mudrock accumulation were at least 330 ft (100 m) as estimated by differences in strata thickness between the northwestern carbonate bank and basinal facies to the southeast. Geochemical analysis indicates anoxic to euxinic bottom-water conditions. These con-ditions were supported by a deep, stratified basin with a lack of circulation. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898079851&doi=10.1306%2f08231312124&partnerID=40&md5=7c6859580438b9e887e95e7e1cdba7f0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13151
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:
Kohl D.,Slingerland R.,Arthur M.,et al. Sequence striating and depositional environments of the Shamokin (Union Springs) Member, Marcellus Formation, and associated strata in the middle Appalachian Basin[J]. AAPG Bulletin,2014-01-01,98(3)