RT Journal Article
T1 Dolomitización bajo superficies de ruptura sedimentaria: estudio comparativo de las dolomías del Turoniense-Coniaciense (El Ribero) y Maastrichtiense superior (Quecedo) del Norte de Burgos (España)
T1 Dolomitization below unconformities: a comparative study of dolomites from Turonian-Coniacian (El Ribero) and Upper Maastrichtian (Quecedo) of Northern Burgos (Spain)
A1 Erkiaga, M.
A1 García Garmilla, Francisco
A1 Rioja, M. A.
A1 Elorza, Javier
AB Substantial dolomitization and calcitization processes occurred in upper Turonian-lower Coniacian and upper Maastrichtian-lower Danian carbonates at El Ribero and Quecedo sections, respectively.Carbonate precipitation is in both cases related to first order sequence boundaries. Textures under S.E.M. reveal m o re im p o rta n t processes o f dissolution at El Ribero in comparison to those a t Quecedo, suggesting an aggressive meteoric phreatic zone. C and O isotopic relations tend to become positive just below the unconformities as a result of the influence of marine waters. A general comparison show more heavy isotopic values at Quecedo. A marine/mixing water model of dolomitization is proposed for both dolomites, but with a major influence of marine waters at Quecedo
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/12262
UL http://hdl.handle.net/10272/12262
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026