Comportamiento luminiscente y preservación de la señal paleoambiental en las conchas de inocerámido (Bivalvia). Maastrichtiense inferior. Cuenca Vasco-Cantábrica

Abstract

Inoceramid shells from the Basque Arc Domain (Basque-Cantabrian Basin) have been studied to determine their behaviour under cathodoluminescence. The shells exhibit a luminescent zoning intimately related to their microstructure and the development of preferred paths of fluid circulation during diagenesis. The luminescent behaviour allows to establish a first classification of the shells according to their preservation degree that can be related to other geochemical and isotopic evidences. Due to the occurrence of nonluminescent areas in the inoceramid shells from Bidart they constitute a good candidate for their use as palaeoenvironmental and chemostratigraphic tool