RT Journal Article
T1 Perfiles geoquímicos y luminiscencia en las cámaras y concha de Crassostrea sp. de la Formación Zufía, Navarra (Albiense superior-Cenomaniense inferior). Parte II
T1 Geochemical trends and luminescence in Crassostrea sp. (chambers and shell) of the Zufia Formation, Navarra(Upper Albian-Lower Cenomanian). Part II
A1 Higuera Ruiz, R.
A1 Elorza, Javier
AB Shells of the oyster Crassostrea sp. from the Zufia Formation show chambers filled with different diageneticcarbonates that record a complex diagenetic history. Evidences of «burial» diagenesis, represented by theformation of ferrous «saddle» dolomite, suggest high formation temperatures. However, the absence ofdissolution/recrystallization features in the Regular Foliated microstructure (RF) indicates its remarkableresistance to diagenetic alteration. Avoiding the camouflage of diagenetic signals, such microstructure istherefore the propitious one to undertake geochemical studies when searching for environmental information.After the «burial» diagenesis stage, an «uplift» process was experienced, characterized by the influence ofmore aggressive, meteoric fluids with lower Fe and Mn concentrations. As a consequence, pressure-solutiontextures were developed in the contact Ds and RF. Likewise, a dedolomitization process, progressing fromthe walls of the cameras to the center, originated the calcitic late digenetic stages C1, C2 and C3
YR 2006
FD 2006
LK http://hdl.handle.net/10272/8616
UL http://hdl.handle.net/10272/8616
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026