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Contents of CaCO3 in the couplets marl-limestone of the Maastrichtian and the Danian at the Sopelana, Basque Arc: grey facies versus red facies

dc.contributor.authorSantander, J.
dc.contributor.authorSopelana, A.
dc.contributor.authorRamírez Rodríguez, J. A.
dc.contributor.authorGarcía Peregrina, I.
dc.contributor.authorCastaños, Jone
dc.contributor.authorDíez López, A.
dc.contributor.authorPerdigón, O.
dc.contributor.authorElorza, Javier
dc.date.accessioned2014-06-25T10:27:14Z
dc.date.available2014-06-25T10:27:14Z
dc.date.issued2007
dc.identifier.urihttp://hdl.handle.net/10272/8349
dc.description.abstractThe Sopelana sea-cliff section exposes a continuous marl-limestone alternation from the Lower Maastrichtian to the Danian, in the deep Basque Arc domain. The high-resolution analysis (% CaCO3) of the Lower- Upper Maastrichtian couplets confirms a simple and regular layout versus a more complex behaviour of the Danian couplets. The marl and limestone mean values of the Upper Maastrichtian point out a continental debris enrichment. The early entry of deep, cold, oxygenated water produces a gradual (grey/ yellowgreenish/ red) change of coloration in the Lower Maastrichtian couplets. It is the beginning of the Cretaceous oceanic red beds (CORB´s). The “bleaching” around macrofossil nucleus and small fractures in the red facies shows a small diagenetic stage due to the influx of reducing fluidsen_US
dc.language.isospaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.otherMarl-limestone coupletsen_US
dc.subject.otherClimatic coolingen_US
dc.subject.otherEarly-Late Maastrichtianen_US
dc.subject.otherDanianen_US
dc.subject.otherBasque Arcen_US
dc.titleContenidos de CaCO3 en los pares marga-caliza del Maastrichtiense y Daniense en Sopelana, Arco Vasco: facies grises frente a facies rojasen_US
dc.titleContents of CaCO3 in the couplets marl-limestone of the Maastrichtian and the Danian at the Sopelana, Basque Arc: grey facies versus red facieseng
dc.typeinfo:eu-repo/semantics/articleen_US
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess


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