Artículo
High-resolution sequence stratigraphy and continental environmental evolution: An example from east-central Argentina
Fecha de publicación:
08/2013
Editorial:
Elsevier Science
Revista:
Sedimentary Geology
ISSN:
0037-0738
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aims of this contribution is to establish a high-resolution sequence stratigraphic scheme for the continental deposits that constitute the Punta San Andrés Alloformation (Plio-Pleistocene) in east-central Argentina, to analyze the basin fill evolution and to identify and assess the role that extrinsic factors such as climate and sea-level oscillations played during evolution of the unit. For the high-resolution sequence stratigraphical study of the Punta San Andrés Alloformation, high- and low-accommodation system tracts were defined mainly on the basis of the architectural elements present in the succession, also taking into account the relative degree of channel and floodplain deposits. Discontinuities and the nature of depositional systems generated during variations in accommodation helped identify two fourth-order high-accommodation system tracts and two fourth-order low-accommodation system tracts. At a third-order scale, the Punta San Andrés Alloformation may be interpreted as the progradation of continental depositional systems, characterized by a braided system in the proximal areas, and a low-sinuosity, single-channel system in the distal areas, defined by a high rate of sediment supply and discharge peaks which periodically flooded the plains and generated high aggradation rates during the late Pliocene and lower Pleistocene.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CIG)
Articulos de CENTRO DE INVEST.GEOLOGICAS (I)
Articulos de CENTRO DE INVEST.GEOLOGICAS (I)
Citación
Beilinson, Elisa; Veiga, Gonzalo Diego; Spalletti, Luis Antonio; High-resolution sequence stratigraphy and continental environmental evolution: An example from east-central Argentina; Elsevier Science; Sedimentary Geology; 296; 8-2013; 21-35
Compartir
Altmétricas