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DOI | 10.1029/2019GL085403 |
U-Th Dating of Syntectonic Calcite Veins Reveals the Dynamic Nature of Fracture Cementation and Healing in Faults | |
Williams, Randolph T.1; Mozley, Peter S.2; Sharp, Warren D.3; Goodwin, Laurel B.1 | |
2019-11-23 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:12900-12908 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Fracture cementation is an important control on the recovery of prefailure levels of permeability and strength in faults. The timescales of this process, however, are almost entirely unknown from direct analysis of the rock record. We report U-Th dating results that quantify rates of fracture cementation in syntectonic calcite veins from the Loma Blanca fault, New Mexico, USA. Measured rates vary from similar to 0.05 to 0.80 mm/ka and exhibit a power function correlation with minimum fracture apertures. We argue that this correlation is the result of crystal growth in a transport-limited system, where cementation rates were proportional to rates of postseismic fluid flow in individual fractures. We further argue that such transport-limited, flux-dependent cementation necessarily leads to a heterogeneous distribution of permeability and strength recovery as fluids migrate through fault-zone fracture networks. These heterogeneities may influence rupture propagations pathways and the continual development of fault-zone architecture/complexity. |
英文关键词 | faults earthquakes healing sealing fractures veins |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000499758100001 |
WOS关键词 | APERTURE VARIABILITY ; VALVE BEHAVIOR ; FLUID-FLOW ; STRESS ; RECORD ; SHEAR ; PRECIPITATION ; PROPAGATION ; DISSOLUTION ; TRANSPORT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/225082 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA; 2.New Mexico Inst Min & Technol, Earth & Environm Sci, Socorro, NM 87801 USA; 3.Berkeley Geochronol Ctr, Berkeley, CA USA |
推荐引用方式 GB/T 7714 | Williams, Randolph T.,Mozley, Peter S.,Sharp, Warren D.,et al. U-Th Dating of Syntectonic Calcite Veins Reveals the Dynamic Nature of Fracture Cementation and Healing in Faults[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):12900-12908. |
APA | Williams, Randolph T.,Mozley, Peter S.,Sharp, Warren D.,&Goodwin, Laurel B..(2019).U-Th Dating of Syntectonic Calcite Veins Reveals the Dynamic Nature of Fracture Cementation and Healing in Faults.GEOPHYSICAL RESEARCH LETTERS,46(22),12900-12908. |
MLA | Williams, Randolph T.,et al."U-Th Dating of Syntectonic Calcite Veins Reveals the Dynamic Nature of Fracture Cementation and Healing in Faults".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):12900-12908. |
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