| DOI: | 10.1002/2015GL064140
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| 论文题名: | Interpreting fluid pressure anomalies in shallow intraplate argillaceous formations |
| 作者: | Neuzil C.E.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8656
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| EISSN: | 1944-8387
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| 出版年: | 2015
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| 卷: | 42, 期:12 | | 起始页码: | 4801
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| 结束页码: | 4808
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| 语种: | 英语
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| 英文关键词: | argillaceous
; low permeability
; pressure anomaly
; shale
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| Scopus关键词: | Glacial geology
; Radioactive wastes
; Shale
; Strain rate
; Argillaceous
; Argillaceous formations
; Flow history
; Flow properties
; Fluid pressures
; Formation scale
; Low permeability
; Pressure anomaly
; Clay minerals
; argillaceous deposit
; Darcy law
; diffusivity
; fluid pressure
; hydraulic conductivity
; intraplate process
; permeability
; pressure gradient
; shale
; strain rate
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| 英文摘要: | Investigations have revealed several instances of apparently isolated highs or lows in pore fluid potential in shallow (< ∼ 1 km depth) argillaceous formations in intraplate settings. Formations with the pressure anomalies are distinguished by (1) smaller ratios of hydraulic conductivity to formation thickness and (2) smaller hydraulic (or pressure) diffusivities than those without anomalies. This is consistent with transient Darcian flow caused by strain at rates of ∼ 10-17 to 10-16 s-1, by significant perturbing events in the past 104 to 106 annum or by some combination of the two. Plausible causes include erosional downwasting, tectonic strain, and glaciation. In this conceptualization the anomalies provide constraints on formation-scale flow properties, flow history, and local geological forcing in the last 106 annum and in particular indicate zones of low permeability (10-19-10-22 m2) that could be useful for isolation of nuclear waste. © 2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948720186&doi=10.1002%2f2015GL064140&partnerID=40&md5=1357ea6a70b7dc134a82f8537bbf182b
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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/8272
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | U.S. Geological Survey, Reston, VA, United States
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| Recommended Citation: | |
Neuzil C.E.. Interpreting fluid pressure anomalies in shallow intraplate argillaceous formations[J]. Geophysical Research Letters,2015-01-01,42(12).
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