DOI: 10.1306/05221312077
Scopus记录号: 2-s2.0-84894234766
论文题名: A sequence-stratigraphic framework for the Upper Devonian Woodford Shale, Permian Basin, west Texas
作者: Hemmesch N.T. ; Harris N.B. ; Mnich C.A. ; Selby D.
刊名: AAPG Bulletin
ISSN: 0149-1553
EISSN: 1558-9283
出版年: 2014
发表日期: 2014
卷: 98, 期: 1 起始页码: 23
结束页码: 47
语种: 英语
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Criteria for recognizing stratigraphic sequences are well established on continental margins but more challenging to apply in basinal settings. We report an investigation of the Upper Devonian Woodford Shale, Permian Basin, west Texas based on a set of four long cores, identifying sea level cycles and stratigraphic sequences in an organic-rich shale. The Woodford Shale is dominated by organic-rich mudstone, sharply overlain by a bioturbated organic-poor mudstone that is consistent with a second-order eustatic sea level fall. Interbedded with the organic-rich mudstone are carbonate beds, chert beds, and radiolarian laminae, all interpreted as sediment gravity-flow deposits. Bundles of interbedded mudstone and carbonate beds alternate with intervals of organicrich mudstone and thin radiolaria-rich laminae, defining a 5-10 m (16-33 ft)-thick third-order cyclicity. The former are interpreted to represent highstand systems tracts, whereas the latter are interpreted as representing falling stage, lowstand, and transgressive systems tracts. Carbonate beds predominate in the lower Woodford section, associated with highstand shedding at a second-order scale; chert beds predominate in the upper Woodford section, responding to the second-order lowstand. Additional variability is introduced by geographic position. Wells nearest the western margin of the basin have the greatest concentration of carbonate beds caused by proximity to a carbonate platform. A well near the southern margin has the greatest concentration of chert beds, resulting from shedding of biogenic silica from a southern source. A well in the basin center has little chert and carbonate; here, third-order sea level cycles were primarily reflected in the stratigraphic distribution of radiolarian-rich laminae. ©2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894234766&doi=10.1306%2f05221312077&partnerID=40&md5=911f60a3a2366959c308e58cc85ba7c8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13124
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:
Hemmesch N.T.,Harris N.B.,Mnich C.A.,et al. A sequence-stratigraphic framework for the Upper Devonian Woodford Shale, Permian Basin, west Texas[J]. AAPG Bulletin,2014-01-01,98(1)