RT Journal Article
T1 Distribución de facies y evolución de un margen de plataforma carbonatada pensilvaniense en el Sector Lois-Ciguera de la Cuenca Carbonífera Central Asturiana (Zona Cantábrica)
T1 Facies distribution and evolution of a pennsylvanian carbonate shelf margin in the Lois-Ciguera sector of theCentral Coal Basin ( Cantabrian Zone)
A1 Corrochano, Diego
A1 Barba, Pedro
A1 Colmenero, Juan Ramón
AB This study focuses on the sedimentology, depositional architecture and evolution of a pennsylvaniancarbonate shelf margin (Bachende Limestones, Lena Group, Podolskian). The evolution can be subdividedinto 5 stages. Stage 1 is formed by an oncolitic transgresive level. Stages 2 and 3 represent the maindevelopment of the platform, showing a lower clinoformal succession and an upper agradational package.Prograding clinoforms are formed by microbial boundstones, that show basinward stratal thinning andchange laterally into argillaceous cherty and bioclastic limestones. Stage 4 is formed by shales and sandstonesthat thicks basinward and overlie an irregular erosive surface. Finally, stage 5 consits of a new transgressivecarbonate unit, formed by micritic limestones and boundstones of dasicladacean algae, calcareous spongesand corals. Platform geometry and development reflects the interaction of variations on avaibleaccommodation space (mostly controlled by sea level glacioeustatic fluctuations and changes in flexuralsubsidence) and siliciclastic influx
YR 2009
FD 2009
LK http://hdl.handle.net/10272/8032
UL http://hdl.handle.net/10272/8032
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026