@article{10272/9102, year = {2002}, url = {http://hdl.handle.net/10272/9102}, abstract = {El Cajón Valley is a tectonic depression elongated in a N-5 direction into the geologic province of Sierras Pampeanas (Argentina). The present dynamic in the study area is controlled by a continetal extremely arid climate, where the rains displays an average of 180 mm/year and the teperatures may supper 40°C in summer. The sedimentary evolution during the Neogene and the influence on it from a volcanic centre located at the north is the aim of this paper. The sedimentological analysis of the stratigraphic formations was realized in a E-W section named Quebrada del Áspero which is affected by a tectonic shortening sliding on muddy strata. Sedimentation consists in an alternance between conglomeratic channels, conglomeratic sandy bodies and wide lutitic strata. The base is constituted by a lutitic formation with lacustrine or lagoonal character. A conglomeratic sequence is located on it. The middle sector of the serie is mainly sandy and finally the top is composed by muds and sands. This sedimentation is characteristic of a braided system. It is significant the presence of epiclastic elemets in the conglomerates and a andesitic/ dacitic formation is also present in the middle sequence}, publisher = {Sociedad Geológica de España}, keywords = {Catamarca}, keywords = {Sierras pampeanas}, keywords = {Neogene}, keywords = {Continental sedimentation}, keywords = {Vulcanism}, title = {Descripción e interpretación de la columna estratigráfica tipo de la serie vulcano-sedimentaria neógena del Valle del Cajón (Catamarca, Argentina)}, title = {Description and interpretation of the type stratigraphic column of the neogene vulcano-sedimentary series from El CajónValley (Catamarca, Argentina)}, author = {Parra, L. E. and Morales González, Juan Antonio}, }