RT Journal Article
T1 Transición Cretácico/Terciario en depósitos continentales de la cuenca de Tremp-Graus: datos preliminares de isótopos estables de CyO
A1 López Martínez, Nieves
A1 Arribas Mocoroa, María Eugenia
A1 Civis Llovera, Jorge
A1 González Delgado, José Ángel
AB Continental deposits around the CretaceouslTertiary boundary have been studied for stratigraphy,sedimentology, paleontology and stable isotopes (JJC and 180) in the Benabarre and Fontlfonga sections(Tremp and Ager synclines, Southern Pyrenees). Similarities in lithology, sedimentary evolution, fossilcontent and isotopic values allow us to interpret these deposits as part of a single basin. A shift in theisotopic content (rise in 180 and fall in 13C) around the KIT boundary is detected. The in creas e in 180 maybe Iinked to higher temperatures andlor to evaporation. The 13e falf matches the «z event» described inmarine environments and interpreted as due to a decrease in marine organic productivity. In nonmarine environments however it could indicate an increase in plant production.
PB Sociedad Geológica de España
SN 0213-683X
YR 1996
FD 1996-07
LK https://hdl.handle.net/20.500.14352/56741
UL https://hdl.handle.net/20.500.14352/56741
LA spa
DS Docta Complutense
RD 27 abr 2024