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La secuencia magmática Jurásico Superior-Cretácico Superior en la Cordillera Central, República Dominicana: sección cortical de un arco-isla intraoceánico.

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Escuder Viruete, J. and Contreras, F. and Stein, G. and Urien, P. and Joubert, M. and Bernárdez, E. and Hernáiz Huerta, P.P. and Lewis, J. and Lopera, E. and Pérez-Estaún, A. (2004) La secuencia magmática Jurásico Superior-Cretácico Superior en la Cordillera Central, República Dominicana: sección cortical de un arco-isla intraoceánico. Geotemas, 6 (1). pp. 41-44. ISSN 1576-5172

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Abstract

The Late Jurassic-Late Cretaceous magmatic sequence exposed in the central-western sector of the Cordillera Central Dominican Republic, can be divided in five main lithostratigraphic units formed by plutonio, volcanic, volcanoclastic and sedimentary rocks. All rocks have suffered very heterogeneous ductile deformation and low-grade metamorphism with magmatic textures often preserved. From bottom to top, this magmatic sequence is made up of:: (1) Loma Caribe serpentinized peridotites, (2) the N-MORB volcano-plutonic assemblage of El Aguacate, of ophiolitic affinity, (3) the Duarte Complex oceanic plateau, (4) the arc-related volcanic and volcano-sedimentary sequence of the Tireo Formation, intruded by the Loma de Cabrera Batolith, and (5) the massive basaltic flows of Peña Blanca y Nalga de Maco. It is suggested that the magmatic sequence represents the crustal section of an intra-oceanic island arc, which was built onto a proto-caribbean oceanic crust and an overlying Lower Cretaceous oceanic plateau. The sequence is overlain by Upper Cretaceous basalts of the Caribbean oceanic plateau and limestones.


Item Type:Article
Uncontrolled Keywords:Island arc; Oceanic plateau; Oceanic crust; Caribbean Plate; Geochemistry
Subjects:Sciences > Geology > Geodynamics
Sciences > Geology > Petrology
ID Code:60698
Deposited On:28 May 2020 12:07
Last Modified:28 May 2020 12:07

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