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GEOREF RECORD

Triassic continental rifting of Pangaea; direct evidence from the Alpujarride carbonates, Betic Cordillera, SE Spain

I. Martin-Rojas, R. Somma, F. Delgado, A. Estevez, A. Iannace, V. Perrone and V. Zamparelli
Triassic continental rifting of Pangaea; direct evidence from the Alpujarride carbonates, Betic Cordillera, SE Spain
Journal of the Geological Society of London (2009) 166 (3): 447-458

Abstract

Evidence is presented for Triassic rift-related palaeo-structures from the Alpujarride Complex carbonates of the Betic Cordillera, SE Spain. Direct evidence of synsedimentary extensional tectonics is provided by macro- to meso-scale normal faults overstepped by younger strata. Most faults define domino-like horst and graben structures. The faults are associated with an expanded synrift sedimentary prism in which soft-sediment deformation, gravity-flow deposits and unconformities are widely developed. Syntectonic mafic igneous intrusions also occur. The age of this phase of extension is constrained as Ladinian-Carnian (c. 237-216 Ma). From a palaeogeographical standpoint, the thick Triassic carbonates of the Betic Internal Zone, together with comparable successions in Northern Calabria (Southern Apennines), occupied a belt with elevated subsidence connecting the Neo-Tethys to the east with the eastern North American intracontinental rift system to the west. Their carbonate facies, intermediate between classical Alpine- and Germanic-type Triassic facies, recorded the main episodes of rifting affecting Central Pangaea.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 166
Serial Issue: 3
Title: Triassic continental rifting of Pangaea; direct evidence from the Alpujarride carbonates, Betic Cordillera, SE Spain
Affiliation: Universidad de Alicante, Departamento de Ciencias de la Tierra y del Medio Ambiente, Alicante, Spain
Pages: 447-458
Published: 2009
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 84
Accession Number: 2009-051217
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., geol. sketch maps
N36°49'60" - N37°00'00", W02°55'60" - W02°27'00"
Secondary Affiliation: Universita di Messina, ITA, ItalyUniversidad de Granada, ESP, SpainUniversita di Napoli 'Federico II', ITA, ItalyUniversita di Urbino 'Carlo Bo', ITA, Italy
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200928
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