Fragmentation of the Alpine orogenic belt by microplate dispersal

Álvarez, Walter; Cocozza, T.; Wezel, Forese Carlo

doi:10.1038/248309a0

Cited by 302 publications

(160 citation statements)

References 23 publications

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“…2 20-15 Separation of Corsica from Sardinia (Alvarez et al, 1974;Orsini et al, 1980). 3 16-14 Opening of the Betic sea strait separated the south Iberian Betic region from the continent (Bustillo and Lopes Garcıa, 1997;Lonergan and White, 1997).…”

Section: Discussionmentioning

confidence: 99%

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Testing alternative vicariance scenarios in Western Mediterranean discoglossid frogs

Fromhage

Vences

Veith

2004

Molecular Phylogenetics and Evolution

113

102

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Dated molecular phylogenies are often used to interpret evolutionary history with respect to paleogeographic events. Where more than one interpretation is possible, it is desirable but difficult to assess the alternatives in an objective manner. The present work demonstrates a formalized method for testing molecular clock calibrations and biogeographic scenarios based on them. We assessed the plausibility of several previously published biogeographic hypotheses, using the frog genera Alytes, Discoglossus, and Bombina as model groups. Our data set comprised ca. 900 bp of partial mitochondrial 16S and 12S rRNA gene sequences (both genes evolved in a clock-like manner across genera) from nearly all the species and subspecies in the three genera. We tested several calibrations of a molecular clock, which resulted in competing temporal settings for the evolution of taxa. Although only one scenario was in complete accordance with paleogeographic data, statistical testing did not reject the alternatives. Limitations encountered with the present approach may be overcome by more comprehensive analyses in future.

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Section: Discussionmentioning

confidence: 99%

“…15 million years (MY) for D. montalentii matches the Corsica-Sardina rift 20-15 MYA ( Fig. 6A; Alvarez et al, 1974;Orsini et al, 1980), rather than the separation of the Corsica-Sardinia microplate from the continent ca. 29 MYA (Bellon et al, 1977) as suggested by Capula et al (1985).…”

Section: Scenario According To Calibration IIImentioning

confidence: 97%

Testing alternative vicariance scenarios in Western Mediterranean discoglossid frogs

Fromhage

Vences

Veith

2004

Molecular Phylogenetics and Evolution

113

102

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“…The origin of the Oligo-Miocene extensional movements recorded in the western Mediterranean basins has been related to the gravitative sinking of subducted oceanic lithosphere of the Tethyan Ocean (Ionian Sea) subducting north-westward since late Eocene, possibly coupled with an asthenospheric east-directed mantle flow (e.g., Alvarez, 1974;Beccaluva et al, 1989;Gueguen et al, 1998;Carminati et al, 2012). The oldest igneous rocks (~38 Myr; Lustrino et al, 2009;Fig.…”

Section: Geological Background and Magmatic Evolutionmentioning

confidence: 99%

Origin and evolution of Cenozoic magmatism of Sardinia (Italy). A combined isotopic (Sr–Nd–Pb–O–Hf–Os) and petrological view

Lustrino

Fedele

Melluso

et al. 2013

Lithos

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Origin and evolution of Cenozoic magmatism of Sardinia (Italy). A combined isotopic (Sr-Nd-Pb-O-Hf-Os) and petrological view, LITHOS (2013), doi: 10.1016/j.lithos.2013.08.022 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

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“…1). The net result of the roll-back was the stripping-off of the Alboran, Kabylie, Peloritan and Calabria (AlKaPeCa) domains from the European margin (Alvarez, 1974;Bouillin, 1986). A two-steps scenario is currently considered for the formation of the West Mediterranean basins (Bouyahiaoui et al, 2015;Medaouri et al, 2014 and references therein).…”

Section: Introductionmentioning

confidence: 99%

The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

Leprêtre

Lamotte

Combier

et al. 2018

BSGF - Earth Sci. Bull.

106

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-The Tell-Rif (Tell in Algeria and Tunisia; Rif in Morocco) is the orogenic system fringing to the south the West Mediterranean basins. This system comprises three major tectonic-palaeogeographic zones from north to south: (1) the internal zones (AlKaPeCa for Alboran, Kabylies, Peloritan, Calabria) originating from the former northern European margin of the Maghrebian Tethys, (2) the "Flyschs zone" regarded as the former cover of the oceanic domain and (3) the external zones, forming the former southern Maghrebian Tethys margin more or less inverted. The Tell-Rif is interpreted as the direct result of the progressive closure of the Maghrebian Tethys until the collision between AlKaPeCa and Africa and, subsequently, the propagation of the deformation within Africa. This gives a consistent explanation for the offshore Neogene geodynamics and most authors share this simple scenario. Nevertheless, the current geodynamic models do not completely integrate the Tell-Rif geology. Based on the analysis of surface and sub-surface data, we propose a reappraisal of its present-day geometry in terms of geodynamic evolution. We highlight its non-cylindrical nature resulting from both the Mesozoic inheritance and the conditions of the tectonic inversion. During the Early Jurassic, we emphasize the development of NE-SW basins preceding the establishment of an E-W transform corridor connecting the Central Atlantic Ocean with the Ligurian Tethys. The Maghrebian Tethys developed just after, as the result of the Late Jurassic-Early Cretaceous left-lateral spreading between Africa and Iberia. By the Late Cretaceous, the occurrence of several tectonic events is related to the progressive convergence convergence between the two continents. A major pre-Oligocene (pre-35 Ma) compressional event is recorded in the Tell-Rif system. The existence of HP-LT metamorphic rocks associated with fragments of mantle in the External Metamorphic Massifs of the Eastern Rif and Western Tell shows that, at that time, the western part of the North-African margin was involved in a subduction below a deep basin belonging to the Maghrebian Tethys. At the same time, the closure of the West Ligurian Tethys through east-verging subduction led to a shift of the subduction, which jumped to the other side of AlKaPeCa involving both East Ligurian and Maghrebian Tethys. Slab rollback led to the development of the Oligo-Miocene back-arc basins of the West-Mediterranean, reworking the previous West Ligurian Tethys suture. The docking of AlKaPeCa against Africa occurred during the Late Burdigalian (17 Ma). Subsequently, the slab tearing triggered westward and eastward lateral movements that are responsible for the formation of the Gibraltar and Tyrrhenian Arcs respectively. The exhumation of the External Metamorphic Massifs occurred through tectonic underplating during the westward translation of the Alboran Domain. It resulted in the formation of both foredeep and wedge-top basins younger and younger westward. The lack of these elements in the eastern part ...

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Fragmentation of the Alpine orogenic belt by microplate dispersal

Cited by 302 publications

References 23 publications

Testing alternative vicariance scenarios in Western Mediterranean discoglossid frogs

Testing alternative vicariance scenarios in Western Mediterranean discoglossid frogs

Origin and evolution of Cenozoic magmatism of Sardinia (Italy). A combined isotopic (Sr–Nd–Pb–O–Hf–Os) and petrological view

The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

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