Dolomitization of detrital deposits related to Neogene extensional faults, Catalan Coastal Ranges (Spain)

• Autores: Francesc Calvet, Anna Travé Herrero, K. Bitzer, Eduard Roca, Jordi Tritlla i Cambra, J. Baker
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 3, 1, 2001 (Ejemplar dedicado a: XIV Congreso Nacional de Sedimentología, IV Congreso del Cretácico de España), págs. 109-112
• Idioma: español
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• Resumen

  • Dolomitization occurs on the SE border of the Valles-Penedes half-graben as a hectometric dolomite body on the hangingwall block of a minor N-S trending normal fault. The dolomite consists of replacive dolomite and dolomite cement and are poor-magnesian dolomites and have a relatively high iron content. The replacive dolomites and dolomite cement have a 8180 varying from -4.8 to -3 .2 % o o PDB, a SnC varying from -3.1 to -2.0 %o PDB and 87Sr/86Sr values ranging from 0.70830 to 0.70896. This dolomitization process was produced by topographically-driven fluids.