Ostracofauna y Foraminíferos: implicaciones cronoestratigráficas y paleoambientales durante el Neógeno superior en el área del Oued arjat (Cuenca de Bou Regreg, Marruecos)

• Autores: Jorge Civis Llovera, Carlos González Lucas, Gaspar Alonso Gavilán, José Ángel González Delgado
• Localización: Geogaceta, ISSN 0213-683X, Nº. 30, 2001, págs. 35-38
• Idioma: español
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• Resumen

  • In this work we analyze the Ostracofauna and Foraminifers from the Upper Neogene of the Oued Arjat area (Bou Regreg basin, N of Morocco). There is a significative change in paleobathymetry between the lower and the upper levels, separated by an unconformity. As showed by Ostracofauna, benthic Foraminifera and Mollusks, the communities of the lower levels are interpreted as originated in paleoenvironments of external marine platform, whereas those of the upper levels are typical of circalittoral conditions of an inner platform. The levels overlying the unconformity are atributed to the Globorotalia puncticulata biozone (Upper Zanclean), wereas those under them, are discussed as Upper Messinian-Lowermost Pliocene age