气候变化领域集成服务门户(CCPortal): Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: Insights into the tectonic evolution of the Strait of Gibraltar area

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DOI	10.1130/B31892.1
	Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: Insights into the tectonic evolution of the Strait of Gibraltar area
	Pérez-Asensio J.N.; Larrasoaña J.C.; Samankassou E.; Sierro F.J.; Garcia-Castellanos D.; Jiménez-Moreno G.; Salazar Á.; Salvany J.M.; Ledesma S.; Pilar Mata M.; Civis J.; Mediavilla C.
发表日期	2018
ISSN	167606
起始页码	1791
结束页码	1808
卷号	130 期号:2021-11-12
英文摘要	The Gibraltar Arc is a complex tectonic region, and several competing models have been proposed to explain its evolution. We studied the sedimentary fill of the Guadalquivir Basin to identify tectonic processes that were occurring when the reopening of the Strait of Gibraltar led to the reestablishment of Mediterranean outflow. We present a chronostratigraphic framework for the Lower Pliocene sediments from the lower Guadalquivir Basin (SW Spain). The updated chronology is based on magnetobiostratigraphic data from several boreholes. Our results show that the studied interval in the La Matilla core is in the early Pliocene section, providing better constraints on the sedimentary evolution of the basin during that period. Migrating depositional facies led to a younger onset of sandy deposition basinward. At the northwestern passive margin, a 0.7 m.y. period of sedimentary bypass related to a sharp decrease in sedimentation rates and lower sea levels resulted from the tectonic uplift of the forebulge. In contrast, high sedimentation rates with continuous deep-marine sedimentation are recorded at the basin center due to continuous tectonic subsidence and west-southwestward progradation of axial depositional systems. The marginal forebulge uplift, continuous tectonic basinal subsidence, and southward progradation of clinoforms in the early Pliocene can be explained by the pull of a lithospheric slab beneath the Gibraltar Arc as the Strait of Gibraltar opened. These findings are, to our knowledge, the first reported sedimentary expression of slab pull beneath the Betics related to the opening of the Strait of Gibraltar after the Messinian salinity crisis. © 2018 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184995
作者单位	Department of Earth Sciences, University of Geneva, Rue des Maraîchers 13, Geneva, 1205, Switzerland; GRC Geociències Marines, Departament de Dinàmica de la Terra i de l'Oceà, Facultat de Ciències de la Terra, Universitat de Barcelona, Carrer Martí i Franquès s/n, Barcelona, 08028, Spain; Instituto Geológico y Minero de España, Unidad de Zaragoza, Manuel Lasala 44, Zaragoza, 50006, Spain; Institute of Earth Sciences Jaume Almera, Consejo Superior de Investigaciones Científicas, Carrer Solé i Sabarís s/n, Barcelona, 08028, Spain; Department of Geology, University of Salamanca, Salamanca, 37008, Spain; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Fuente Nueva s/n, Granada, 18002, Spain; Instituto Geológico y Minero de España, La Calera 1, Tres Cantos, Madrid, 28760, Spain; Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya, Carrer Jordi Girona 31, Barcelona, 08034, Spain; Gas Natural Fenosa, Avenida San Luis 77, Madrid, 28033, Spain; Instituto Geológic...
推荐引用方式 GB/T 7714	Pérez-Asensio J.N.,Larrasoaña J.C.,Samankassou E.,et al. Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: Insights into the tectonic evolution of the Strait of Gibraltar area[J],2018,130(2021-11-12).
APA	Pérez-Asensio J.N..,Larrasoaña J.C..,Samankassou E..,Sierro F.J..,Garcia-Castellanos D..,...&Mediavilla C..(2018).Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: Insights into the tectonic evolution of the Strait of Gibraltar area.Bulletin of the Geological Society of America,130(2021-11-12).
MLA	Pérez-Asensio J.N.,et al."Magnetobiochronology of Lower Pliocene marine sediments from the lower Guadalquivir Basin: Insights into the tectonic evolution of the Strait of Gibraltar area".Bulletin of the Geological Society of America 130.2021-11-12(2018).