SCSIO OpenIR  > 中科院边缘海地质重点实验室
Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data
Pedoja, K; Ortheb, L; Dumont, JF; Lamothe, M; Ghaleb, B; Auclair, M; Labrousse, B; pedoja_mathelin@yahoo.fr
2006
Source PublicationMARINE GEOLOGY
ISSN0025-3227
Volume228Issue:40547Pages:73-91
AbstractMarine 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.
DepartmentGeosci 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
KeywordMarine Terrace Coastal Uplift Concave Subduction Ridge Subduction Tablazo
Subject AreaGeosciences, Multidisciplinary ; Oceanography
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Indexed Bysci
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/4442
Collection中科院边缘海地质重点实验室
Corresponding Authorpedoja_mathelin@yahoo.fr
Recommended Citation
GB/T 7714
Pedoja, K,Ortheb, L,Dumont, JF,et al. Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data[J]. MARINE GEOLOGY,2006,228(40547):73-91.
APA Pedoja, K.,Ortheb, L.,Dumont, JF.,Lamothe, M.,Ghaleb, B.,...&pedoja_mathelin@yahoo.fr.(2006).Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data.MARINE GEOLOGY,228(40547),73-91.
MLA Pedoja, K,et al."Quaternary coastal uplift along the Talara Arc (Ecuador, Northern Peru) from new marine terrace data".MARINE GEOLOGY 228.40547(2006):73-91.
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