RT Journal Article
T1 Alteración diagenética en conchas de rudistas monopléuridos del Complejo Urgoniano de la Punta del Castillo (Albiense inferior, Gorliz, Bizkaia)
T1 Diagenetic alteration in monopleurid rudist shells from the Urgonian Complex of El Castillo Cape (Lower Albian,Gorliz, Bizkaia)
A1 Regidor Higuera, I.
A1 García Garmilla, Francisco
AB The rudist assemblages of the Urgonian limestones of El Castillo Cape (lower Albian) consist largely onbouquets and thickets of caprotinids in whose interspaces grew bouquets of monopleurids, all depositedin a shallow marine platform. The complex diagenetic history suffered by El Castillo Cape sediments, fromearly stages (vadose meteoric dissolution) to more advanced ones (neomorphism), entrained themonopleurid shell geochemistry. Detailed chemical analysis along the intergrowth texture of twomonopleurid shells show the different luminescent and geochemical behaviour of each part of the shells inresponse to diagenetic processes. The analyzed specimens are thought to have suffered a medium diageneticdegree, in spite of the microstructures are moderately preserved. So it can be deduced from the Sr-Na lowmmol/mol values, the Mn-Fe high mmol/mol values and the homogeneous distribution of luminescencefollowing the shell microstructures. The hipostracum and inner miostracum are thought to have been themore accessible parts of the shell for the influence of diagenetic fluids, and show a clear evidence ofneomorphism. Only a part of the miostracum of one of the specimens still partially retains the originalcomposition, displaying «saw-tooth» cationic profiles and behaving non-luminescent
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8645
UL http://hdl.handle.net/10272/8645
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026