Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31783.1 |
Miocene-Pleistocene deformation of the Saddle Mountains: Implications for seismic hazard in central Washington, USA | |
Staisch, Lydia1,2; Kelsey, Harvey3; Sherrod, Brian2; Moller, Andreas4; Paces, James5; Blakely, Richard1; Styron, Richard6,7 | |
2018-03-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:411-437 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Italy |
英文摘要 | The Yakima fold province, located in the backarc of the Cascadia subduction zone, is a region of active strain accumulation and defor-mation distributed across a - series of fault-cored folds. The geodetic network in central Washington has been used to interpret large-scale N-S shortening and westward-increasing strain; however, geodetic data are unable to resolve shortening rates across individual structures in this low-strain-rate environment. Resolving fault geometries, slip rates, and timing of faulting in the - Yakima fold province is critically important to seismic hazard assessment for nearby infrastructure and population centers. The Saddle Mountains anticline is one of the most prominent Yakima folds. It is unique within the Yakima fold province in that the syntectonic strata of the Ringold Formation are preserved and provide a record of deformation and drainage reorganization. Here, we present new stratigraphic columns, U-Pb zircon tephra ages, U-series caliche ages, and geophysical modeling that constrain two line-balanced and retrodeformed cross sections. These new constraints indicate that the - Saddle Mountains anticline has accommodated 1.0-1.3 km of N-S shortening since 10 Ma, that shortening increases westward along the anticline, and that the average slip rate has increased 6-fold since 6.8 Ma. Provenance analysis suggests that the source terrane for the Ringold Formation was similar to that of the modern Snake River Plain. Using new slip rates and structural constraints, we calculate the strain accumulation time, interpretable as a recurrence interval, for earthquakes on the Saddle Mountains fault and find that large-magnitude earthquakes could rupture along the Saddle Mountains fault - every 2-11 k.y. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427362500004 |
WOS关键词 | SNAKE RIVER PLAIN ; LATE QUATERNARY DEFORMATION ; DETRITAL ZIRCON PROVENANCE ; U-PB GEOCHRONOLOGY ; COLUMBIA PLATEAU ; OHANAPECOSH FORMATION ; PROPAGATION ; EVOLUTION ; BASALT ; ANTICLINE |
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/24359 |
专题 | 地球科学 |
作者单位 | 1.US Geol Survey, Geol Minerals Energy & Geophys Sci Ctr, 345 Middlefield Rd, Menlo Pk, CA 94025 USA; 2.Univ Washington, Earthquake Sci Ctr, US Geol Survey, Seattle, WA 98195 USA; 3.Humboldt State Univ, Dept Geol, Arcata, CA 95521 USA; 4.Univ Kansas, Dept Geol, Lawrence, KS 66045 USA; 5.US Geol Survey, Geosci & Environm Change Sci Ctr, Box 25046, Denver, CO 80225 USA; 6.Earth Anal, Seattle, WA 98105 USA; 7.Global Earthquake Model Fdn, I-27100 Pavia, Italy |
推荐引用方式 GB/T 7714 | Staisch, Lydia,Kelsey, Harvey,Sherrod, Brian,et al. Miocene-Pleistocene deformation of the Saddle Mountains: Implications for seismic hazard in central Washington, USA[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:411-437. |
APA | Staisch, Lydia.,Kelsey, Harvey.,Sherrod, Brian.,Moller, Andreas.,Paces, James.,...&Styron, Richard.(2018).Miocene-Pleistocene deformation of the Saddle Mountains: Implications for seismic hazard in central Washington, USA.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,411-437. |
MLA | Staisch, Lydia,et al."Miocene-Pleistocene deformation of the Saddle Mountains: Implications for seismic hazard in central Washington, USA".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):411-437. |
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