| DOI: | 10.1306/12011111129
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| Scopus记录号: | 2-s2.0-84865385393
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| 论文题名: | Grain assemblages and strong diagenetic overprinting in siliceous mudrocks, Barnett Shale (Mississippian), Fort Worth Basin, Texas |
| 作者: | Milliken K.L.; Esch W.L.; Reed R.M.; Zhang T.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1748
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| EISSN: | 1558-9478
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| 出版年: | 2012
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| 发表日期: | 2012
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| 卷: | 96, 期:8 | | 起始页码: | 1553
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| 结束页码: | 1578
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| 语种: | 英语
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| Scopus关键词: | Barnett shale
; Bulk rocks
; Diagenetics
; Endmembers
; Field emission scanning electron microscopes
; Gas research
; Intergranular porosity
; Mudrocks
; Organic particulates
; Porosimetry
; Reservoir quality
; Rock textures
; Siliciclastic sediments
; Solid bitumen
; Total Organic Carbon
; Vitrinite reflectance
; Chemical modification
; Debris
; Helium
; Rocks
; Scanning electron microscopy
; Sedimentology
; Shale
; Textures
; Porosity
; compaction
; debris flow
; diagenesis
; Mississippian
; mudstone
; overprinting
; permeability
; porosity
; scanning electron microscopy
; siliceous deposit
; total organic carbon
; Fort Worth Basin
; Texas
; United States
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | Porosity, permeability, and total organic carbon (TOC) in a heterogeneous suite of 21 high-maturity samples (vitrinite reflectance 1.52-2.15%) from the Barnett Shale in the eastern Fort Worth Basin display few correlations with parameters of rock texture, fabric, and composition, these factors being mostly obscured by the effects of a protracted history of diagenesis. Diagenesis in these rocks includes mechanical and chemical modifications that occurred across a wide range of burial conditions. Compaction and cementation have mostly destroyed primary intergranular porosity. The porosity (average <5 vol. % by Gas Research Institute helium porosimetry) and pore size (<8 nm median pore-throat diameter) are reduced to a degree such that pores are difficult to detect even by imaging Ar ion-milled surfaces with a field-emission scanning electron microscope. The existing porosity that can be imaged is mostly secondary and is localized dominantly within organic particulate debris and solid bitumen. The grain assemblage is highly modified by replacement. A weak pattern of correlation survives between bulk rock properties and the ratio of extrabasinal to intrabasinal sources of siliciclastic debris. Higher porosity, permeability, and TOC are observed in samples representing the extreme end members of mixing between extrabasinal siliciclastic sediment and intrabasinal-derived biosiliceous debris. Reservoir quality in these rocks is neither more strongly nor more simply related to variations in primary texture and composition because the interrelationships between texture and composition are complex and, importantly, the diagenetic overprint is too strong. Copyright © 2012. The American Association of Petroleum Geologists. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865385393&doi=10.1306%2f12011111129&partnerID=40&md5=33ce9b92cda2085a4cd29c583c2b8cc0
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13318
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| 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: | |
Milliken K.L.,Esch W.L.,Reed R.M.,et al. Grain assemblages and strong diagenetic overprinting in siliceous mudrocks, Barnett Shale (Mississippian), Fort Worth Basin, Texas[J]. AAPG Bulletin,2012-01-01,96(8)
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