RT Journal Article
T1 Microestructuras, luminiscencia y geoquímica en Crassostrea sp. de la Formación Zufía, Navarra (Albiense superior-Cenomaniense inferior). Parte I
T1 Microstructures, luminescence and geochemical behaviour in Crassostrea sp. of the Zufia Formation, Navarra(Upper Albian-Lower Cenomanian). Part I
A1 Higuera Ruiz, R.
A1 Elorza, Javier
AB Shells of the oyster Crassostrea sp. from the Zufia Formation, deposited in a strongly subsiding basin at theend of the Albian, show the same microstructures than recent and fossil Crassostrea sp., deposited in otherless subsiding areas; the best preserved microstructure is the regular foliated (RF), while the most altered oneis the complex cross foliated (CCF); the external regular simple prismatic (RSP) microstructure, however,shows different degrees of alteration. Both daily-tidal (La) and seasonal (Lb) growth lines can be seen in the RFmicrostructure. The CCF and RSP ones show, in the best preserved areas, daily-tidal growth lines. Our traceelement analyses, carried out at a fine-scaled resolution along a sclerochronological transect in the condrophorearea of the shell, indicate sinusoidal patterns for the Mg/Ca and Sr/Ca ratios. Interestingly, such patternsfollow that of the growth lines and, thus, they provide seasonal information. Accordingly, an age of morethan 3 years has been assigned to a selected sample. The Na/Ca ratio progressively decreases with the life ofthe oyster. The Fe/Ca and Mn/Ca ratios are both higher in the luminescent Lb seasonal growth lines
YR 2006
FD 2006
LK http://hdl.handle.net/10272/8609
UL http://hdl.handle.net/10272/8609
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026