Articolo in rivista, 2013, ENG
Bortolotti V. [1]; Chiari M. [2]; Marroni M. [3, 4]; Pandolfi L. [3, 4]; Principi G. [1]; Saccani E. [5]
[1] Dipartimento di Scienze della Terra, Universita` di Firenze, Florence, Italy [2] Istituto di Geoscienze e Georisorse, CNR, Florence, Italy [3] Dipartimento di Scienze della Terra, Universita` di Pisa, Pisa, Italy [4] Istituto di Geoscienze e Georisorse, CNR, Pisa, Italy [5] Dipartimento di Scienze della Terra, Universita` di Ferrara, Ferrara, Italy
All the geological constraints for an exhaustive reconstruction of the Triassic to Tertiary tectonic history of the southern Dinaric-Hellenic belt can be found in Albania and Greece. This article aims to schematically reconstruct this long tectonic evolution primarily based on a detailed analysis of the tectonic setting, the stratigraphy, the geochemistry, and the age of the ophiolites. In contrast to what was previously reported in the literature, we propose a new subdivision on a regional scale of the ophiolite complexes cropping out in Albania and Greece. This new subdivision includes six types of ophiolite occurrences, each corresponding to different tectonic units derived from a single obducted sheet. These units are represented by: (1) sub-ophiolite mélange, (2) Triassic ocean-floor ophiolites, (3) metamorphic soles, (4) Jurassic fore-arc ophiolites, (5) Jurassic intra-oceanic-arc ophiolites, and (6) Jurassic back-arc basin ophiolites. The overall features of these ophiolites are coherent with the existence of a single, though composite, oceanic basin located east of the Adria/Pelagonian continental margin. This oceanic basin was originated during the Middle Triassic and was subsequently (Early Jurassic) affected by an east-dipping intra-oceanic subduction. This subduction was responsible for the birth of intra-oceanic-arc and back-arc oceanic basins separated by a continental volcanic arc during the Early to Middle Jurassic. From the uppermost Middle Jurassic to the Early Cretaceous, an obduction developed, during which the ophiolites were thrust westwards firstly onto the neighboring oceanic lithosphere and then onto the Adria margin.
International journal of earth sciences (1999, Internet) 102 , pp. 783–811
ophiolites, supra-subduction, back-arc, obduction, triassic jurasic
Marroni Michele, Pandolfi Luca, Chiari Marco
ID: 209608
Year: 2013
Type: Articolo in rivista
Creation: 2013-05-07 17:49:25.000
Last update: 2016-03-31 09:52:15.000
CNR authors
CNR institutes
External links
OAI-PMH: Dublin Core
OAI-PMH: Mods
OAI-PMH: RDF
URL: http://www.springerlink.com/openurl.asp?genre=journal&issn=1437-3254
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:209608
ISI Web of Science (WOS): 000316678000014