ESTRATIGRAFIA DEL GRUPO CUEVO (PERMICO-TRIASICO INFERIOR) Y REFERENCIAS DEL GRUPO TACURU (JURASICO) EN LAS MÁRGENES DEL RÍO BERMEJO (Departamento de Orán, Salta y Departamento de Tarija, Bolivia).

TOMEZZOLI R.N.

Revista de la Asociación Geológica Argentina

Asociación Geológica Argentina

Año: 1996 vol. 51 p. 37 - 50

Abstract: Is has shown a detailed study of Cuevo and Tacurú Groups in Bermejo River, in the international boundary between Argentina and Bolivia. The analysis is focus in the Late Paleozoic and Mesozoic of Sierras Subandinas. The sedimentary environments have interpreted through faces and sedimentary structures. The lower units of Cuevo Group belong to eolian sediments, associated with wet and dry interdunes and the upper to a shallow marine carbonate platform and lake deposits. The age of this has extended between the Lower Permian to Lower Triassic, in based on comparison with other formations, which have Permian fossils. Tacurú Group represents a dune's field developed during Late Triassic-Jurassic times. Regional correlations has made in order to improve stratigraphic knowledge of the area.