Compositional and Geochemical Signatures for the Sedimentary Evolution of the Middle Triassic–Lower Jurassic Continental Redbeds from Western-Central Mediterranean Alpine Chains
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Title: | Compositional and Geochemical Signatures for the Sedimentary Evolution of the Middle Triassic–Lower Jurassic Continental Redbeds from Western-Central Mediterranean Alpine Chains |
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Authors: | Critelli, Salvatore | Mongelli, Giovanni | Perri, Francesco | Martín Algarra, Agustín | Martín-Martín, Manuel | Perrone, Vincenzo | Dominici, Rocco | Sonnino, Maurizio | Zaghloul, Mohamed Najib |
Research Group/s: | Evolución Geodinámica de la Cordillera Bética Oriental y de la Plataforma Marina de Alicante |
Center, Department or Service: | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente |
Keywords: | Redbeds | Malaguide | Geodynamic implications |
Knowledge Area: | Geodinámica Interna |
Issue Date: | Jul-2008 |
Publisher: | The University of Chicago Press |
Citation: | CRITELLI, Salvatore, et al. “Compositional and Geochemical Signatures for the Sedimentary Evolution of the Middle Triassic–Lower Jurassic Continental Redbeds from Western-Central Mediterranean Alpine Chains”. The Journal of Geology. Vol. 116, No. 4 (July 2008). ISSN 0022-1376, pp. 375-386 |
Abstract: | Compositional and chemical analyses suggest that Middle Triassic–Lower Liassic continental redbeds (in the internal domains of the Betic, Maghrebian, and Apenninic chains) can be considered a regional lithosome marking the Triassic-Jurassic rift-valley stage of Tethyan rifting, which led to the Pangaea breakup and subsequent development of a mosaic of plates and microplates. Sandstones are quartzose to quartzolithic and represent a provenance of continental block and recycled orogen, made up mainly of Paleozoic metasedimentary rocks similar to those underlying the redbeds. Mudrocks display K enrichments; intense paleoweathering under a hot, episodically humid climate with a prolonged dry season; and sediment recycling. Redbeds experienced temperatures in the range of 100°–160°C and lithostatic/tectonic loading of more than 4 km. These redbeds represent an important stratigraphic signature to reconstruct a continental block (Mesomediterranean Microplate) that separated different realms of the western Tethys from Middle-Late Jurassic to Miocene, when it was completely involved in Alpine orogenesis. |
Sponsor: | This work was funded by the Ministero dell’Universtità e della Ricerca Scientifica–Progetto di Ricerca Nazionale (MIUR-PRIN) 2001–2003 Project (“Age and Sedimentary Characters of the Mesozoic Continental Redbeds [Verrucano] from Northern Apennines to the Betic Cordillera: Implications for Paleogeographic and Tectonic Evolution of the Central-Western Mediterranean Alpine Belts,” S. Critelli, G. Mongelli, V. Perrone), MIUR-ex60% Projects (“Paleogeographic and Paleotectonic Evolution of the Circum-Mediterranean Orogenic Belts, 2001–2005” and “Relationships between Tectonic Accretion, Volcanism, and Clastic Sedimentation within the Circum-Mediterranean Orogenic Belts, 2006,” S. Critelli), the 2006–2008 MIUR-PRIN Project 2006.04.8397 (“The Cenozoic Clastic Sedimentation within the Circum-Mediterranean Orogenic Belts: Implications for Paleogeographic and Paleotectonic Evolution,” S. Critelli, G. Mongelli, V. Perrone), and Research Project CGL2005-03887 MEC (A. Martin-Algarra). |
URI: | http://hdl.handle.net/10045/27483 |
ISSN: | 0022-1376 (Print) | 1537-5269 (Online) |
DOI: | 10.1086/588833 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2008 by The University of Chicago |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1086/588833 |
Appears in Collections: | INV - GEODIN - Artículos de Revistas |
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2008_Critelli_Journ_Geology.pdf | 799 kB | Adobe PDF | Open Preview | |
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