DOI: 10.1007/s00531-014-1023-8
Scopus记录号: 2-s2.0-84905923411
论文题名: The tectono-sedimentary evolution of a hyper-extended rift basin: The example of the Arzacq-Mauléon rift system (Western Pyrenees, SW France)
作者: Masini E. ; Manatschal G. ; Tugend J. ; Mohn G. ; Flament J.-M.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 103, 期: 6 起始页码: 1569
结束页码: 1596
语种: 英语
英文关键词: Albian Basin
; Aquitaine Basin
; Arzacq Basin
; Asymmetric rifting
; Detachment faulting
; Hyper-extended rift
; Mauléon Basin
; Pyrenees
; Supra-detachment basin
Scopus关键词: active fault
; Albian
; basin evolution
; crustal evolution
; crustal thinning
; detachment fault
; emplacement
; exhumation
; extensional tectonics
; lower crust
; rifting
; structural control
; syntectonic sediment
; tectonic evolution
; upper crust
; Aquitaine Basin
; Arzacq Basin
; France
; Mauleon Basin
; Pyrenees
英文摘要: In this paper, we present a sedimentary and structural analysis that together with maps, sections and new Ar/Ar data enable to describe the tectono-sedimentary evolution of the Mauléon hyper-extended rift basin exposed in the W-Pyrenees. Hyper-extension processes that ultimately resulted in exhuming mantle rocks are the result of the subsequent development of two diachronous detachment systems related to two evolutional stages of rifting. An initial Late Aptian Early Albian crustal thinning phase is first recorded by the development of a crustal necking zone controlled by the north-vergent Southern Mauléon Detachment system. During a subsequent exhumation phase, active faulting migrates to the north with the emplacement of the Northern Mauléon detachment system that exhumed north section thinned continental crust and mantle rocks. This diachronous crustal thinning and exhumation processes are also recorded by the diachronous deposition of syn-tectonic sedimentary tracts above the two supra-detachment sub-basins. Syn-tectonic sedimentary tracts record the progressive exhumation of footwall rocks along detachment systems. Tectonic migration from the southern to the northern Mauléon Detachment system is recorded by the coeval deposition of "sag" deposits above the necking zone basin and of syn-tectonic tracts above exhumed rocks north section. Located on a hanging-wall situation related to the Mauléon hyper-extension structures, the Arzacq Basin also records a major crustal thinning phase as shown by its subsidence evolution so as by deep seismic images. The absence of major top-basement structures and its overall sag morphology suggest that crustal thinning processes occurred by decoupled extension of lower crustal levels contrasting with the Southern Mauléon Detachment system. Reconciling observations from the Mauléon and Arzacq Basins, we finally propose in this paper that they were the result of one and the same asymmetric crustal thinning and exhumation processes, where extension is accommodated into the upper crust in the Mauléon Basin (lower plate basin) and relayed in ductile lower crust below the Arzacq Basin (upper plate basin). © 2014 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905923411&doi=10.1007%2fs00531-014-1023-8&partnerID=40&md5=16e2521b48703ed6cac904c97fa883eb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70419
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: IPGS/CNRS 7516, 1 rue Blessig, 67084 Strasbourg Cedex, France; TOTAL-Exploration Production/Projets Nouveaux Place Jean Millier, La Défense 6, 92078 Paris la Defense Cedex, France
Recommended Citation:
Masini E.,Manatschal G.,Tugend J.,et al. The tectono-sedimentary evolution of a hyper-extended rift basin: The example of the Arzacq-Mauléon rift system (Western Pyrenees, SW France)[J]. International Journal of Earth Sciences,2014-01-01,103(6)