Dynamics and seismotectonics of the West-Alpine arc

Giglia, G.; Capponi, Giovanni; Crispini, Laura; Piazza, Michele

doi:10.1016/s0040-1951(96)00093-5

Cited by 48 publications

(54 citation statements)

References 25 publications

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“…13). The westward motion of this presumably inherited Adria indenter was accomodated by dextral shear along the Periadriatic line as soon as earliest Oligocene (Schmid et al, 1987;Handy et al, 2005), with possibly a conjugate sinistral shear zone to the south (Giglia et al, 1996). It produced fast exhumation of the Eocene paleo-accretionnary wedge, together with a dramatic increase in altitude and erosion rates.…”

Section: Discussionmentioning

confidence: 96%

“…According to us, and following Ford et al (2006), this scenario provides the best explanation for the two-stages deformation history and interference structures observed in the external zone. The Oligocene westward escape of the Internal Alps indenter was kinematically linked with the dextral motion along the Insubric fault to the north (Schmid et al, 1987) and with an expected conjugate sinistral shear zone to the south, from which the recent "Stura couloir" (Giglia et al, 1996) could derive. The lithospheric scale indenter is cored by Adriatic lithospheric mantle of the Ivrea body (Lardeaux et al, 2006).…”

Section: Discussionmentioning

confidence: 96%

“…The Oligocene Western Alpine evolution resulted primarily in the combined effects of two related dynamics: (i) westward indentation (combined with anticlockwise rotation; Channel, 1996) of previously uplifted Adriatic lithospheric mantle to the north (Ivrea body), and (ii) SE-to E-directed incipient Apenninic thrusting to the south, probably driven by slab roll-back beneath the Corsica-Sardinia-Provence realm suffering back-arc extension (Faccenna et al, 2004). The contrasting evolution of these two domains led to strain partitioning and the necessary development of strike-slip boundaries (Giglia et al, 1996;Malusa et al, 2009). The Ivrea body, which has been extensively investigated using geophysical methods (Roure et al, 1996;Schreiber et al, 2009 and refs.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Structural and sedimentary records of the Oligocene revolution in the Western Alpine arc

Dumont

Schwartz

Guillot

et al. 2012

Journal of Geodynamics

100

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Structural and sedimentary records of the Oligocene revolution in the Western Alpine arc

Dumont

Schwartz

Guillot

et al. 2012

Journal of Geodynamics

100

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“…9e; Philippe et al 1996;Giamboni, et al 2003) and the Dauphinois (Martinod et al 1996;Lickorish and Ford 1998). Neotectonic activity within the Alps and their foreland is documented by seismicity (Giglia et al 1996;Deichmann et al 2000;Schmid and Kissling 2000) and by geodetic data that indicate present-day shortening rates of 2-5 mm/y for the Dauphinois and French Jura Mountains (Jouanne et al 1995;Martinod et al 1996). From about 4 Ma onward, compressional deformation of the Jura Mountains was no longer exclusively thin-skinned but involved also the basement, as indicated by intra-crustal earthquakes (Roure et al 1994;Philippe et al 1996;Jouanne et al 1998;Becker 2000).…”

Section: Neotectonic Deformation Of the Rrsmentioning

confidence: 99%

“…10d;Ahorner 1975;Giglia et al 1996;Hinzen 2003). Pliocene and Quaternary extensional and transtensional subsidence of the Roer Valley and Upper Rhine grabens, respectively, is documented by the fault-controlled thickness of their sedimentary fill, the occurrence of active faults and earthquake activity (Ahorner 1983;Zijerveld et al 1992;Plenefisch and Bonjer 1997;Schumacher 2002;Michon et al 2003).…”

Section: Neotectonic Deformation Of the Rrsmentioning

confidence: 99%

Evolution of the lithosphere in the area of the Rhine Rift System

Ziegler

Dèzes

2005

Int J Earth Sci (Geol Rundsch)

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The Rhine Rift System (RRS) forms part of the European Cenozoic Rift System (ECRIS) and transects the Variscan Orogen, Permo-Carboniferous troughs and Late Permian to Mesozoic thermal sag basins. Crustal and lithospheric thicknesses range in the RRS area between 24-36 km and 50-120 km, respectively. We discuss processes controlling the transformation of the orogenically destabilised Variscan lithosphere into an end-Mesozoic stabilised cratonic lithosphere, as well as its renewed destabilisation during the Cenozoic development of ECRIS. By end-Westphalian times, the major sutures of the Variscan Orogen were associated with 45-60 km deep crustal roots. During the Stephanian-Early Permian, regional exhumation of the Variscides was controlled by their wrench deformation, detachment of subducted lithospheric slabs, asthenospheric upwelling and thermal thinning of the mantlelithosphere. By late Early Permian times, when asthenospheric temperatures returned to ambient levels, lithospheric thicknesses ranged between 40 km and 80 km, whilst the thickness of the crust was reduced to 28-35 km in response to its regional erosional and local tectonic unroofing and the interaction of mantle-derived melts with its basal parts. Re-equilibration of the lithosphere-asthenosphere system governed the subsidence of Late Permian-Mesozoic thermal sag basins that covered much of the RRS area. By end-Cretaceous times, lithospheric thicknesses had increased to 100-120 km. Paleocene mantle plumes caused renewed thermal weakening of the lithosphere. Starting in the late Eocene, ECRIS evolved in the Pyrenean and Alpine foreland by passive rifting under a collision-related north-directed compressional stress field. Following endOligocene consolidation of the Pyrenees, west-and northwest-directed stresses originating in the Alps controlled further development of ECRIS. The RRS remained active until the Present, whilst the southern branch of ECRIS aborted in the early Miocene. Extensional strain across ECRIS amounts to some 7 km. Plume-related thermal thinning of the lithosphere underlies uplift of the Rhenish Massif and Massif Central. Lithospheric folding controlled uplift of the VosgesBlack Forest Arch.

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Fault‐slip analysis in the metaophiolites of the Voltri Massif: constraints for the tectonic evolution at the Alps/Apennine boundary

et al. 2008

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The metaophiolitic Voltri Massif underwent a complex tectono-metamorphic evolution, resulting from subduction to collision events during the Alpine orogenic cycle, and was subsequently involved in the first stages of the Apennine Orogeny. So this is a key area to investigate the late orogenic Alpine tectonics and its time relationship with the first Apenninic deformation events.We performed detailed mapping, fault-slip analysis and study of fault rocks in a study area located at the eastern border of the Voltri Massif. Here we recognized two main generations of reverse shear zones (RSZ). The first one (RSZ1) is associated to mylonites and protomylonites in greenschist to low-greenschist metamorphic facies and is characterized by a ductile to ductilebrittle behaviour; RSZ1 display either top-to-N-NW or to-SW kinematics. The second generation of reverse shear zones (RSZ2) is characterized by fault breccia, crush breccia or protocataclasite; RSZ2 sense of tectonic transport ranges from top-to-NW, -SW and -NE.RSZ1 structures are locally folded by 10 m-scale, open chevron folds with fold axes gently plunging to SW that likely represent the last phases of deformation during Alpine collision.RSZ2 structures locally reactivate RSZ1, with a more brittle behaviour and produce a huge volume of fault rock. They are coeval with low-greenschist to zeolite-facies metamorphic conditions. The RSZ2 fit a transpressional regime active at the eastern border of the Voltri Massif at least during the late Oligocene-early Miocene.

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Dynamics and seismotectonics of the West-Alpine arc

Cited by 48 publications

References 25 publications

Structural and sedimentary records of the Oligocene revolution in the Western Alpine arc

Structural and sedimentary records of the Oligocene revolution in the Western Alpine arc

Evolution of the lithosphere in the area of the Rhine Rift System

Fault‐slip analysis in the metaophiolites of the Voltri Massif: constraints for the tectonic evolution at the Alps/Apennine boundary

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