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DOI | 10.1016/j.jsg.2007.02.015 |
Fine-scale partitioning of contemporary strain in the southern Walker Lane: Implications for accommodating divergent strike-slip motion | |
Lewis, Jonathan C. | |
通讯作者 | Lewis, Jonathan C. |
来源期刊 | JOURNAL OF STRUCTURAL GEOLOGY |
ISSN | 0191-8141 |
出版年 | 2007 |
卷号 | 29期号:7页码:1201-1215 |
英文摘要 | Treating the crust as a micropolar continuum and inverse modeling a high-quality catalog of earthquake focal mechanisms reveals that >km-scale heterogeneous strain is partitioned at similar to km-scales into pairs of plane strains with sub-perpendicular principal axes. These earthquakes occurred in a shallow crustal volume centered on the western Indian Wells Valley of eastern California, the site of divergent, right-lateral strike-slip motion along the boundary between the Sierran microplate and the southern Basin and Range province. The seismic events defining the plane strains occur in a diffuse seismic source zone and cannot be additionally subdivided on the basis of the type of strain they accommodate. The results indicate that seismic moment release for background earthquakes is partitioned into events associated with either fault-zone-perpendicular extension by normal faults or horizontal shearing by conjugate strike-slip faults. The spatial scales over which this partitioning occurs suggest that outcrop-scale brittle faults may in some cases record nearly perpendicular plane strains related to a single continuous deformation. (C) 2007 Elsevier Ltd. All rights reserved. |
英文关键词 | Walker Lane transtension seismogenic strain partitioning micropolar |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000248109300008 |
WOS关键词 | CALIFORNIA SHEAR ZONE ; INDIAN WELLS VALLEY ; EASTERN CALIFORNIA ; MOJAVE DESERT ; COSO-RANGE ; PLATE CONVERGENCE ; FAULT KINEMATICS ; BLOCK ROTATIONS ; INYO-COUNTY ; FORE-ARC |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/155248 |
作者单位 | (1)Indiana Univ Penn, Dept Geosci, Indiana, PA 15705 USA |
推荐引用方式 GB/T 7714 | Lewis, Jonathan C.. Fine-scale partitioning of contemporary strain in the southern Walker Lane: Implications for accommodating divergent strike-slip motion[J],2007,29(7):1201-1215. |
APA | Lewis, Jonathan C..(2007).Fine-scale partitioning of contemporary strain in the southern Walker Lane: Implications for accommodating divergent strike-slip motion.JOURNAL OF STRUCTURAL GEOLOGY,29(7),1201-1215. |
MLA | Lewis, Jonathan C.."Fine-scale partitioning of contemporary strain in the southern Walker Lane: Implications for accommodating divergent strike-slip motion".JOURNAL OF STRUCTURAL GEOLOGY 29.7(2007):1201-1215. |
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