Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017WR022464 |
Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement | |
Zhang, Yipeng1; Person, Mark1; Voller, Vaughan2; Cohen, Denis1; McIntosh, Jennifer3; Grapenthin, Ronni1 | |
2018-10-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:10页码:7577-7602 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The effects of Pleistocene glacial loading on rock failure, permeability increases, pore pressure evolution, and brine migration within two linked sedimentary basins were evaluated using a multiphysics control volume finite element model. We applied this model to an idealized cross section that extends across the continent of North America from the Hudson Bay to the Gulf of Mexico. Our analysis considered lithosphere geomechanical stress changes (sigma(yy) > 35 MPa) in response to 10 cycles of ice sheet loading. Hydrologic boundary conditions, lithosphere rheological properties, and aquifer/confining unit configuration were varied in a sensitivity study. We used a Coulomb Failure Stress change metric (Delta CFSp > 0.1 MPa) to increase permeability by a factor of 100 in some simulations. Results suggest that a buildup of anomalous pore pressures up to about 3 MPa occurred in confining units during periods of glaciations, but this had only a second-order effect on triggering rock failure. In regions prone to failure, permeability increases during glaciations help to explain observations of brine flushing in sedimentary basin aquifers. During the Holocene to present day, deglaciation resulted in underpressure formation in confining units primarily along the northern margin of the northern basin. Holocene-modern geomechanical stress fields were relatively small (<0.6 MPa). However, pore pressure increases associated with postglacial rebound, especially when a basal sedimentary basin aquifer is present, induced rock failure and seismicity up to 150 km beyond the terminus of the ice sheet. Sedimentary basin salinity patterns did not equilibrate after 10 simulated glacial cycles. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450726000026 |
WOS关键词 | NATURAL HYDROTHERMAL SYSTEMS ; ATLANTIC CONTINENTAL-SHELF ; GROUNDWATER-FLOW ; INDUCED STRESSES ; MICHIGAN BASIN ; ICE ; WATER ; PERMEABILITY ; CANADA ; DEEP |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21746 |
专题 | 资源环境科学 |
作者单位 | 1.New Mexico Inst Min & Technol, Dept Earth & Environm Sci, Socorro, NM 87801 USA; 2.Univ Minnesota, Dept Civil Environm & Geoengn, Minneapolis, MN USA; 3.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA |
推荐引用方式 GB/T 7714 | Zhang, Yipeng,Person, Mark,Voller, Vaughan,et al. Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement[J]. WATER RESOURCES RESEARCH,2018,54(10):7577-7602. |
APA | Zhang, Yipeng,Person, Mark,Voller, Vaughan,Cohen, Denis,McIntosh, Jennifer,&Grapenthin, Ronni.(2018).Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement.WATER RESOURCES RESEARCH,54(10),7577-7602. |
MLA | Zhang, Yipeng,et al."Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration Within Sedimentary Basins and the Crystalline Basement".WATER RESOURCES RESEARCH 54.10(2018):7577-7602. |
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