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学科主题: Geosciences, Multidisciplinary; Oceanography
题名: Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data
作者: Pedoja, K ; Ortheb, L ; Dumont, JF ; Lamothe, M ; Ghaleb, B ; Auclair, M ; Labrousse, B
通讯作者: pedoja_mathelin@yahoo.fr
关键词: marine terrace ; coastal uplift ; concave subduction ; ridge subduction ; tablazo
刊名: MARINE GEOLOGY
发表日期: 2006-01-01
卷: 228, 期:40547, 页:73-91
收录类别: sci
部门归属: Geosci Azur, F-06235 Villefranche Sur Mer, France; IRD, Paleotrop, F-93143 Bondy, France; Univ Quebec, Dept Sci Terre & Atmosphere, Montreal, PQ H3C 3P8, Canada; Univ Quebec, Geotop, Montreal, PQ H3C 3P8, Canada
摘要: Marine terrace sequences have been investigated along the Talara Arc, a 1000-km-long stretch of the coast of Ecuador and northern Peru, characterized by subduction with a concave plan-view. Seven areas were investigated, evidencing flights of up to seven marine terraces with elevations reaching up to 360 in above mean sea level (amsl). Dating of the terraces was made using the Infra Red Stimulated Luminescence (IRSL) technique on sands as old as MIS 9 (similar to 330 ka). C-14 and U-series dates were obtained from fossil shells for geochronological cross control. Mean uplift rates along the Talara Arc range from about 0.10 up to 0.50 mm/ yr. The strongest uplift is observed in the Manta Peninsula of Ecuador in front of the subduction of the Carnegie Ridge. The uplift rate tends to slow down towards the northern and southern ends of the Talara Arc and then the transition toward the stable or subsiding coasts of central Peru and northern Ecuador and Colombia is sharp. The uplift appears to be homogeneous and related to 1) the map view curvature of the Are, 2) the concave subduction pattern and 3) the Carnegie Ridge subduction. (c) 2006 Elsevier B.V. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4442
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Pedoja, K; Ortheb, L; Dumont, JF; Lamothe, M; Ghaleb, B; Auclair, M; Labrousse, B.Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data,MARINE GEOLOGY,2006,228(40547):73-91
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文件名: Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data .pdf
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