Structure of the lithosphere beneath the Eastern Alps (southern sector of the TRANSALP transect)

Castellarin, Alberto; Nicolich, R.; Fantoni, Roberto; Cantelli, Luigi; Sella, Mattia; Selli, Luigi

doi:10.1016/j.tecto.2005.10.013

Cited by 93 publications

(138 citation statements)

References 47 publications

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“…1) record the complex evolution from Late Cretaceous subduction to Cenozoic continental collision between European plate and Adria microplate (i.e., Africa plate) and subsequent intra-continental deformation (e.g., Coward and Dietrich, 1985;Castellarin et al 1992;Elter et al 2003;Dilek 2006;Marroni et al 2010;. Late Cretaceous -early Eocene accretionary stage has been recorded in the complex evolution of the Ligurian accretionary complex that consists of different units (i.e., Internal, External and Subligurian units) containing tectono-sedimentary assemblages that were originally deposited in an ocean basin (i.e., Jurassic ophiolites and sedimentary cover), ocean-continental transition zone (OCT), and thinned continental crust of the Adria margin, respectively.…”

Section: Regional Settingmentioning

confidence: 99%

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Festa

Ogata

Pini

et al. 2014

International Geology Review

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This is an author version of the contribution published on:Questa è la versione dell'autore dell'opera: Review, v. 57, no. 5-8, 540-562. Doi: 10.1080/00206814.2014. Festa et al. (2015) -International GeologyThe definitive version is available at:La versione definitiva è disponibile alla URL:http://www.tandfonline.com/loi/tigr20 AbstractIn the Northern Apennines of Italy, mud-rich olistostromes (sedimentary mélanges) occur at different stratigraphic levels within late Oligocene -early Miocene sedimentary record of episutural/wedge-top basins. They are widely distributed along the exhumed outer part of the Ligurian accretionary complex, atop of the outer Apenninic prowedge, over an area of about 300 km long and 10-15 km wide. Olistostromes represent excellent examples of ancient submarine mass-transport complexes (MTCs), consisting of stacked cohesive debris flows that can be directly compared with some of those observed in modern accretionary wedges. We describe the internal arrangement of olistostrome occurrences in the sector between Voghera and the Monferrato, analyzing their relationships with mesoscale liquefaction features, which are commonly difficult to observe in modern MTCs. Slope failures occurred in isolated sectors along the wedge front, where out-of-sequence thrusting, seismicity and different pulses of overpressured tectonically-induced fluid flows acted concomitantly. Referring to the Northern Apennines regional geology, we also point out a gradual lateral rejuvenation (from late Oligocene to early Miocene) toward the SE and an increasing in size and thickness of the olistostromes along the strike of the frontal Apenninic prowedge. This suggests that morphological reshaping of the outer prowedge via mass transport processes balanced with different pulses in a short time span the SE-ward migration and segmentation of the accretionary processes. The latter have been probably favored by the occurrence in the northwestern part of the Northern Apennines of major, inherited paleogeographic features controlling the northward propagation of the prowedge. The detailed knowledge of olistostromes, as ancient examples of MTCs related to syn-sedimentary tectonics and shale diapirism, and of their lateral variations in term of age and size, provides useful information for better understanding both the tectono-stratigraphic evolution of the Apenninic prowedge and the submarine slope failures in modern accretionary wedges.

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Section: Regional Settingmentioning

confidence: 99%

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Festa

Ogata

Pini

et al. 2014

International Geology Review

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“…The E-W-trending, subvertical to high-angle Oligocene dykes are unconformably emplaced within both the Austroalpine basement and calcschists of the Glockner nappe, near their backfolded tectonic contact (Figure 2): these relationships point out that the prominent antiformal doming of the Austroalpine-Penninic nappe stack (Castellarin et al, 2006;Lammerer et al, 2008; Lüschen, E., Lammerer, B., Gebrande, H., Millahn, K., Nicolich, R., & TRANSALP Working Group, 2004) and related backfolding were already developed in the Oligocene (Bistacchi et al, 2004), and that they are not a Miocene feature (as e.g. in Fügenschuh, Seward, & Mancktelow, 1997;Schmid et al, 2013).…”

Section: Oligocene Igneous Bodiesmentioning

confidence: 99%

“…The mapped area and surroundings (Figures 1 and 2) include two main structural domains with contrasting tectonic and metamorphic features: the Austroalpine-Penninic collisional wedge and the Southalpine basement (Bigi, Castellarin, Coli, Dal Piaz, Sartori, Scandone, & Vai, 1990;Bistacchi et al, 2004;Castellarin, Nicolich, Fantoni, Cantelli, Sella, & Selli, 2006;Dal Piaz, 2010;Frisch, Dunkl, & Kuhlemann, 2000;Kummerow, Kind, Oncken, Giese, Ryberg, Wylegalla, Scherbaum, & TRANSALP Working Group, 2004;Kurz, Neubauer, Genser, & Dachs, 1998;Lammerer, Gebrande, Lüschen, & Vesela, 2008;Lammerer & Weger, 1998;Lüschen et al, 2004;Schmid, Scharf, Handy, & Rosenberg, 2013). The former is characterized by a generally pervasive Alpine reworking through subductionrelated blueschist and/or Barrovian greenschist to amphibolite facies metamorphism (Oberhänsli, Bousquet, Engi, Goffé, Gosso, Handy, et al, 2004, and refs.…”

Section: Geological Outlinementioning

confidence: 99%

“…The retro-wedge crystalline basement of the Adria-vergent Southern Alps (Castellarin et al, 2006;Cuffaro, Riguzzi, Scrocca, Antonioli, Carminati, Livani, & Doglioni, 2010;Spiess et al, 2010) is represented in the mapped area by the Permian Bressanone Granite (Del Moro & Visonà, 1982), minor gabbros (Inset 4) and some roofing quartz-phyllites, the latter showing Variscan greenschist facies metamorphism (Baggio et al, 1969). To the north the pluton is bounded by the North-Giudicarie and Pusteria lines of the Periadriatic System, whereas to the south the basement is overlain by Permo-Mesozoic cover units of the Dolomites (not included in our map).…”

Section: Southern Alpsmentioning

confidence: 99%

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Geology of the Brenner Pass-Fortezza transect, Italian Eastern Alps

Schiavo¹,

Piaz

Monopoli³

et al. 2014

Journal of Maps

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We present a 1:30,000 geological map resulting from detailed geostructural surveys carried out along the Italian segment of the design corridor for the Brenner Pass railway base tunnel (BBT), extending from Fortezza (Italy) to Innsbruck (Austria). The map covers the southern part of the Austroalpine-Penninic collisional wedge, the Periadriatic Fault System, associated Oligocene igneous bodies (Periadriatic magmatism) and part of the Southalpine basement. The Penninic Zone in the western Tauern Window is represented by the double domal structure of the Europe-derived Tux and Venediger-Zillertal basement and cover nappe system, capped by the ophiolitic Glockner nappe. The overlying Austroalpine nappe system is here represented by the polymetamorphic Merano-Mules basement and minor cover sheets. The Southern Alps domain includes the Bressanone Granite and pre-granite quartz-phyllites. Four Alpine ductile deformation phases have been recognized, followed by ductile-brittle shear zones, and finally brittle deformations along faults with extensional and strike-slip kinematics. The Quaternary is characterized by glacial deposits, large gravitational mass movements and landslides.

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“…Structures of particular interest for this study concern the distinct jump of the Moho boundary from Europe to Adria, the indenting Adriatic lower crust, the Helevetic and Penninic nappes overthrusted to the north, and the seismic signature of back-thrusting in the Southern Alps. The TRANSALP profile is based on the seismic data of Lüschen et al (2006), Kummerov et al (2004), and the interpretations of Castellarin et al (2006) and Lammerer et al (2008). The East-Alpine nappes, which overthrusted Flysch and Molasse to the north, are well-imaged down to a depth of 15 km.…”

Section: Seismic Profiles Through the Crustmentioning

confidence: 99%

Lithospheric Structure and Tectonics of the Eastern Alps – Evidence from New Seismic Data

Brückl¹

2011

Tectonics

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Structure of the lithosphere beneath the Eastern Alps (southern sector of the TRANSALP transect)

Cited by 93 publications

References 47 publications

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Geology of the Brenner Pass-Fortezza transect, Italian Eastern Alps

Lithospheric Structure and Tectonics of the Eastern Alps – Evidence from New Seismic Data

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