Dolostone origin in the Riópar area (SE Spain): implications on the geology of the Prebetic Zone
In the present study a petrographic description and C-O stable isotope data of dolostone occurrences at the Riópar area (Mesozoic Prebetic Zone) are presented. Results constrain the origin and dolomitization processes for each dolomitic unit providing new insights on the geology of the Prebetic. Dol...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/23791 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/23791 |
| Access Level: | acceso abierto |
| Palabra clave: | 552.5 Dolostone Stable isotope Prebetic Riópar Dolomía Isótopos estables Prebético Petrología |
| Sumario: | In the present study a petrographic description and C-O stable isotope data of dolostone occurrences at the Riópar area (Mesozoic Prebetic Zone) are presented. Results constrain the origin and dolomitization processes for each dolomitic unit providing new insights on the geology of the Prebetic. Dolostones are grouped in: i) large seismicscale stratabound dolostones hosted in limestones of Lower Jurassic, Middle Jurassic and Upper Cretaceous ages; and ii) stratabound and patchy dolostones hosted in a carbonatic sequence of Upper Jurassic to Lower Cretaceous age. Two dolomitizing origins have been distinguished: i) a low-temperature dolomitization originated from seawater (seismicscale stratabound dolomitized limestones); ii) a hydrothermal dolomitization originated by high temperature brines (stratabound and patchy dolomitized limestones). Results of this study can be used as a guide for other poorly known dolomitic areas in the Prebetic Zone. |
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