Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/08231616065 |
Direct estimation of fault trajectory from structural relief | |
Eichelberger, Nathan W.1; Nunns, Alan G.1; Groshong, Richard H., Jr.2; Hughes, Amanda N.3,4 | |
2017-05-01 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2017 |
卷号 | 101期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Confidently defining the trajectory of faults that control structural traps is a recurring challenge for seismic interpreters. In regions with fault-related folds, seismic and well data often constrain the upper fold geometry, but the location and displacement of the controlling fault are unknown. We present a generalized area-depth strain (ADS) analysis method that uses the observed depth variation in deformed horizon areas to directly estimate underlying fault depth, dip, displacement, and layer-parallel strain from a structural interpretation. Previously established ADS methods are only applicable to structures controlled by faults that sole into layer-parallel detachments. The new technique, referred to as the fault-trajectory method, generalizes ADS analysis to contractional and extensional structures controlled by fault ramps that cut across layers and displace the regional. For structures where area is conserved during deformation and shear is minimal, laterally shifting the analysis limits across the structure defines changes in fault orientation. We validate the method by applying it to numerical forward models, analog clay models, and seismically imaged structures from the San Joaquin basin in California, the Sierras Pampeanas in Argentina, and the North Sea. The fault-trajectory method is shown to be robust, because it exactly reproduces the prescribed fault trajectories and displacements used to construct the numerical and analog models. In the natural examples, the ADS-estimated fault trajectories are consistent with independent fault-location constraints such as earthquake focal mechanisms, seismic imaging, and forward modeling. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401859700001 |
WOS关键词 | AREA ; DETACHMENT ; GEOMETRY ; DEFORMATION ; CALIFORNIA ; KINEMATICS ; CONSTANT ; GROWTH ; STRAIN ; DEPTH |
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/24466 |
专题 | 地球科学 |
作者单位 | 1.StructureSolver, POB 335, Danville, CA 94526 USA; 2.Univ Alabama, 2504 Twain Dr, Tallahassee, FL 32311 USA; 3.Chevron Energy Technol Co, 1500 Louisiana St,28065, Houston, TX 77002 USA; 4.Univ Arizona, Dept Geosci, 1040 E 4th St, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Eichelberger, Nathan W.,Nunns, Alan G.,Groshong, Richard H., Jr.,et al. Direct estimation of fault trajectory from structural relief[J]. AAPG BULLETIN,2017,101(5). |
APA | Eichelberger, Nathan W.,Nunns, Alan G.,Groshong, Richard H., Jr.,&Hughes, Amanda N..(2017).Direct estimation of fault trajectory from structural relief.AAPG BULLETIN,101(5). |
MLA | Eichelberger, Nathan W.,et al."Direct estimation of fault trajectory from structural relief".AAPG BULLETIN 101.5(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论