Resistencia a la alteración diagenética de conchas de Chondrodonta sp en las calizas rojas del Aptiense-Albiense inferior de Ereño (Bizkaia)

1. Damas Mollá, Laura
2. Aranburu Artano, Arantza
3. García Garmilla, Francisco

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Abstract

Chondrodonta sp. shells from Aptian � Lower Albian red limestones of Ereño (Bizkaia, northern Spain) have proved to be excellent indicators of a high resistance to the entrance of diagenetic fluids and further diagenetic alteration. Chondrodonta sp. shells, when compared to their coeval rudist shells, show higher Sr+2 and Na+ contents, together with very dull or even null luminescence. For this reason they could be very appropriate for further C, O an Sr isotopic studies as a tool for reconstruction of palaeotemperatures and palaeoenvironmental conditions.

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