Stratigraphic record of the structural evolution of the western extensional margin of the Subalpine Basin during the Triassic and Jurassic, Ardeche, France

Razin, Philippe; Bonijoly, D.; Strat, Paul Le; Courel, L.; Poli, Emmanuelle; Dromart, G.; Elmi, Serge

doi:10.1016/0264-8172(96)00032-3

Cited by 35 publications

(19 citation statements)

References 17 publications

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“…The Hettangian/Sinemurian, late Sinemurian (base Raricostatum zone, "Lotharingian" events), late Carixian (Ibex/ Davoei) reorganizations of the subsidence pattern and the late Domerian-early Toarcian wavelength change are contemporaneous with increasing rates in the extension of the Ligurian Tethys [197][198][199][200] along a NW-SE direction [201]. Unfortunately orne of these data are in conflict with this view: thi could be explained by data provided by different analytical method.…”

Section: Tectonic and Geodynamic Significance Of The Lower! Middle LImentioning

confidence: 99%

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

et al. 2000

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Section: Tectonic and Geodynamic Significance Of The Lower! Middle LImentioning

confidence: 99%

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

et al. 2000

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“…20) was characterized by a wide shelf that was superimposed on a system of Triassic to Middle Jurassic half-grabens and horsts which had evolved prior to the opening of the Piemont-Penninic Ocean (Baudrimont and Dubois, 1977; Lemoine and de Graciansky, 1988;Razin et al, 1996). This shelf was further destabilized by Oxfordian-Aptian rifting that preceded the opening of the North Atlantic, Bay of Biscay and the Valais Trough, resulting in isolation of the Ibero-Briançonnais terrane (Stampfli, 1993;Philippe et al, 1998).…”

Section: West Alpine Forelandmentioning

confidence: 99%

Dynamic processes controlling foreland development – the role of mechanical (de)coupling of orogenic wedges and forelands

Ziegler¹,

Bertotti²,

Cloetingh³

2002

Stephan Mueller Spec. Publ. Ser.

104

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Abstract. Depending on the polarity of the subduction system controlling the evolution of an orogenic wedge, we distinguish between pro-wedge (fore-arc, foreland) and retrowedge (retro-arc, hinterland) forelands. Flexural foreland basins and/or intraplate compressional structures can develop in retro-wedge domains of Andean-type and in pro-and retro-wedge domains of Himalayan-type orogens.Whereas the subsidence of retro-wedge foreland basins is exclusively controlled by the topographic load exerted by the orogenic wedge on the foreland lithosphere, the additional load of the subducted lithospheric slab contributes towards the subsidence of pro-wedge foreland basins. Flexural forebulges develop only if the orogenic wedge and the foreland lithosphere are mechanically decoupled at lithospheric levels.Under conditions of mechanical coupling between an orogenic wedge and its foreland at crustal and/or mantlelithospheric levels, compressional stresses are transmitted into the latter, inducing reactivation of pre-existing crustal discontinuities and broad crustal and lithosphere scale folding at distances up to 1700 km from the collision front. Such stresses can accentuate potential pre-existing flexural forebulges or impede their development. Depending on the thickness and rheological structure of the crust and its sedimentary cover, thick-and/or thin-skinned thrusts can propagate far into forelands, either disrupting pre-existing flexural foreland basins or impeding their development.Collision-related compressional stresses can be transmitted into pro-wedge forelands during 1) initiation of subduction zones, 2) periods of subduction impediment caused by the arrival of more buoyant crust at a subduction zone, 3) initial collision of an orogenic wedge with a passive margin, and 4) post-collisional over-thickening and uplift of an orogenic wedge and the development of a mantle-back-stop.Development of intraplate compressional/transpressional structures in forelands is indicative for the build-up of collision-related compressional stresses, and thus for strong Correspondence to: P. A. Ziegler (fax +41-061-421.55.35) mechanical coupling of a foreland with the associated orogenic wedge, either at crustal and/or mantle-lithospheric levels. The absence of syn-orogenic intraplate compressional structures suggests that the respective orogenic wedge and its foreland(s) were mechanically decoupled. The level of mechanical coupling between an orogenic wedge and its foreland is temporally and spatially variable.Mechanical coupling and uncoupling of orogenic wedges and their forelands probably depends on the geometry and frictional shear strength of their common boundary zone. Subduction resistance of the foreland, as well as the buildup of high fluid pressures in subducted sediments, presumably play an important role. Pro-wedge continental crust and mantle-lithosphere can be subducted to depths of 100-150 km at which it can no longer support the weight of the attached oceanic slab and fails. Slab-detachment results in uplift of th...

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“…Quesada et al (2005) reported a contemporaneous unconfor mity in the Basque-Cantabrian Basin, but detailed biostratigraphic data demonstrated that it represents actually an intra-Concavum hiatus ( Goy and Ureta, 1994). The forth un conformity (U4), at the top of S4 (between Concavum and Discites Zones), is equivalent to that described at the western margin of the Subalpine Basin by Razin et al ( 1996) and in the Quercy Basin by Lezin et al (2007). The last one, US, at the top of SS (between Discites and Laeviuscula Zones), is equivalent to an unconformity recognized in the Paris Basin by de Graciansky and Jacquin (2003).…”

Section: Eustatic Signalsmentioning

confidence: 91%

“…In the Ardeche area, several pulses of extensional tectonic activity have been detected around the late Toarcian-Aalenian transition (Razin et al, 1996 ). The activity of extensional faults in the Paris Basin is marked by stratigraphic gaps and condensed layers from the latest Toarcian to the earliest Bajocian ( de Graciansky and Jacquin, 2003 ).…”

Section: Role Of Extensional Tectoni Csmentioning

confidence: 99%

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Aalenian pulses of tectonic activity in the Iberian Basin, Spain

García-Frank¹,

Ureta²,

Mas³

2008

Sedimentary Geology

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Keywords: Condense d sequences Tectonic controls AalenianIn the northwest Iberian Range the Aalenian to Bajocian interval is represented by condensed, as well as more expanded marine carbonate s.trata deposited in a shallow epicontinental-sea setting. Precise biochronological data (successive ammonites assemblages) from 29 measured sections, along with a bed by-bed facies analysis, allowed a detailed correlation between sections, the definition of a number of successive transgressive-regressive cycles and of two distinct sedimentation areas, as. well as the compilation of isopach maps for short time intelVals (duration of ammonites Zone/Subzone) and the assessment of sediment accumulation rates. Iberian Basin SpainDifferences in facies and thickness in the studied interval, and the sequential organization, reveal significant changes in the depositional environment. A tectonically-controlled compartmentalization of the sedimenta.

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Stratigraphic record of the structural evolution of the western extensional margin of the Subalpine Basin during the Triassic and Jurassic, Ardeche, France

Cited by 35 publications

References 17 publications

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

Dynamic processes controlling foreland development – the role of mechanical (de)coupling of orogenic wedges and forelands

Aalenian pulses of tectonic activity in the Iberian Basin, Spain

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Stratigraphic record of the structural evolution of the western extensional margin of the Subalpine Basin during the Triassic and Jurassic, Ardeche, France

Cited by 35 publications

References 17 publications

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

Meso-Cenozoic geodynamic evolution of the Paris Basin: 3D stratigraphic constraints

Dynamic processes controlling foreland development &#8211; the role of mechanical (de)coupling of orogenic wedges and forelands

Aalenian pulses of tectonic activity in the Iberian Basin, Spain

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Dynamic processes controlling foreland development – the role of mechanical (de)coupling of orogenic wedges and forelands