Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2012TC003112 |
Quaternary morphotectonic mapping of the Wadi Araba and implications for the tectonic activity of the southern Dead Sea fault | |
Le Beon, Maryline1,2; Klinger, Yann1; Meriaux, Anne-Sophie3; Al-Qaryouti, Mahmoud4; Finkel, Robert C.5,6; Mayyas, Omar4; Tapponnier, Paul1,7 | |
通讯作者 | Le Beon, Maryline |
来源期刊 | TECTONICS
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ISSN | 0278-7407 |
EISSN | 1944-9194 |
出版年 | 2012 |
卷号 | 31 |
英文摘要 | The Dead Sea strike-slip fault accommodates the northward motion of Arabia relative to Sinai at a rate of similar to 5 mm/yr. The southern segment of the fault, the Wadi Araba fault, runs along a valley blanketed in Quaternary sediments. We first focused on understanding the relative and absolute timing of emplacement of the alluvial surfaces. We then determined the probable source of the sediments before assessing their lateral offset to constrain the late Pleistocene fault slip rate. Seven successive morphostratigraphic levels were identified. At two sites, we recognized an alluvial sequence of five to seven successive levels with ages getting younger northward, a pattern consistent with the western block moving southward relative to two fixed feeding channels located to the east. Surface samples were collected for Be-10 cosmogenic radionuclide dating. Fans F3 and F5 were found to be synchronous from site to site, at 102 +/- 26 ka and 324 +/- 22 ka, respectively, while F4 could be dated at 163 +/- 19 ka at one site only. These are minimum ages, assuming no erosion of the alluvial surfaces. At least two of these periods are correlated with wet periods that are regionally well documented. Further analyses of tectonic offsets are affected in most cases by large uncertainties due to the configuration of the sites. They indicate maximum offsets of similar to 5.5 km for the oldest, possibly similar to 1 Ma old, surfaces. They lead to bracketing of the fault slip rate between 5 and 12 mm/yr, with preferred values of 5-7 mm/yr, for the last 300 ka. |
类型 | Article |
语种 | 英语 |
国家 | France ; Taiwan ; England ; Jordan ; USA ; Singapore |
收录类别 | SCI-E |
WOS记录号 | WOS:000309615100001 |
WOS关键词 | SLIP RATE ; SEQUENCE STRATIGRAPHY ; SINISTRAL MOVEMENT ; DESERT PAVEMENTS ; FLUVIAL TERRACES ; LATE PLEISTOCENE ; GPS MEASUREMENTS ; EXPOSURE AGES ; VALLEY ; BE-10 |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | University of California, Berkeley ; E17 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175157 |
作者单位 | 1.Univ Paris Diderot, CNRS, UMR 7154, Inst Phys Globe Paris, F-75005 Paris, France; 2.Natl Taiwan Univ, Dept Geosci, Taipei 10764, Taiwan; 3.Newcastle Univ, Sch Geog Polit & Sociol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England; 4.Nat Resources Author, Seismol Div, Amman, Jordan; 5.Univ Calif Berkeley, Earth & Planetary Sci Dept, Berkeley, CA 94720 USA; 6.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA; 7.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore |
推荐引用方式 GB/T 7714 | Le Beon, Maryline,Klinger, Yann,Meriaux, Anne-Sophie,et al. Quaternary morphotectonic mapping of the Wadi Araba and implications for the tectonic activity of the southern Dead Sea fault[J]. University of California, Berkeley, E17,2012,31. |
APA | Le Beon, Maryline.,Klinger, Yann.,Meriaux, Anne-Sophie.,Al-Qaryouti, Mahmoud.,Finkel, Robert C..,...&Tapponnier, Paul.(2012).Quaternary morphotectonic mapping of the Wadi Araba and implications for the tectonic activity of the southern Dead Sea fault.TECTONICS,31. |
MLA | Le Beon, Maryline,et al."Quaternary morphotectonic mapping of the Wadi Araba and implications for the tectonic activity of the southern Dead Sea fault".TECTONICS 31(2012). |
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