Structure and evolution of the Austral basin fold-thrust belt, Southern Patagonian Andes
Main Article Content
Abstract
This study focuses on the evolution of the Southern Patagonian Andes fold-thrust belt and the adjacent non-deformed foreland
of the Austral basin between 49°45' and 52°00'SL. This sector involves mainly Late Cretaceous sequences of the first regressive
cycle (Lago Viedma Cycle) of the Austral basin foreland stage, and Campanian to Paleogene sequences associated
with tectonic uplift of its western boundary. From a stratigraphic-sedimentary point of view, a first-order increase in the fillthickness
and depth to the basement exists from north to south including the presence of deeper depositional environments
in the same direction. Furthermore, there are strong along-strike variations in width and lateral position of the structural domains
following the same trend. Based upon previous interpretations, is concluded that the distribution of extensional depocenters
from the early extensional phase of the basin controlled these important sedimentary and structural N-S contrasts.
Furthermore, in our presented model, East-west oriented transition zones are interpreted as accommodation zones separating
synrift sub-basins.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Nota de copyright
Los autores conservan los derechos de autor y garantizan a la revista el derecho de ser la primera publicación del trabajo licenciado según una licencia de atribución Creative Commons que permite a otros compartir el trabajo con el reconocimiento de la autoría y de la publicación en la que se publicó por primera vez.
Declaración de privacidad
Los nombres y direcciones de correo electrónico introducidos en esta revista se usarán exclusivamente para los fines declarados por esta revista y no estarán disponibles para ningún otro propósito u otra persona.