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Titolo:
Age and dynamic context of the multicostate zeilleriids limestones of the Grand Pic de l'Ouarsenis (Algiers-Oran tell, western Algeria).
Autore:
Benhamou, M; Elmi, S; Almeras, Y;
Indirizzi:
Univ Lyon 1, UFR Sci Terre, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 re, F-69622 Villeurbanne, France Univ Lyon 1, CNRS, FRE 2158, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 58, F-69622 Villeurbanne, France Univ Oran, Inst Sci Terre, Projet Rech G3101, Es Senia 31100, Algeria UnivOran Es Senia Algeria 31100 jet Rech G3101, Es Senia 31100, Algeria
Titolo Testata:
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DELA TERRE ET DES PLANETES
fascicolo: 11, volume: 331, anno: 2000,
pagine: 717 - 723
SICI:
1251-8050(200012)331:11<717:AADCOT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
FRE
Soggetto:
BRACHIOPODS; MOROCCO; ATLAS;
Keywords:
brachiopods; large bivalves; Lias; Tell; Algeria; sedimentary evolution; environments; palaeobiogeography; palaeobiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Elmi, S Univ Lyon 1, UFR Sci Terre, F-69622 Villeurbanne, France Univ Lyon1 Villeurbanne France F-69622 622 Villeurbanne, France
Citazione:
M. Benhamou et al., "Age and dynamic context of the multicostate zeilleriids limestones of the Grand Pic de l'Ouarsenis (Algiers-Oran tell, western Algeria).", CR AC S IIA, 331(11), 2000, pp. 717-723

Abstract

The vertical range of the brachiopods in the Ouarsenis depends closely on the sedimentary: evolution and on the local geodynamic controls. During theLate Sinemurian and the Early Carixian. several Zeilleriid coquinas have accumulated on a shallow carbonate platform. These brachiopods are well levelled in the biochronologic scale and their age is confirmed by the discovery of an ammonite (Gemmellarocerns sp.). Aborted reefs were built laterally following tectonic movements. The sedimentary evolution has happened duringa relative sea-level rise. The brachiopods appeared at the beginning and disappeared when the filling progressed. A forced regression occurred at theend of the Early Carixian. It is marked by incisions, emersions and karstifications. Large bivalve limestones (Cochlearites, Opisoma) have been deposited later. Their local chronological position ranges from the Middle Carixian to the Late Carixian (Demonense and Dilectum Zones). (C) 2000 Academic des sciences / Editions scientifiques et medicales Elsevier SAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 17:54:07