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Tectonic evolution of the northern depocenter of the Austral basin, Southern Patagonian Andes

Abstract : The thesis plan includes the following specific objectives: According to field observations structural geological map will be obtained georeferenced area covering between the lake Buenos Aires and Mayer River in the Southern Andes Patagonian, Santa Cruz province. Provenance analysis were done by petrographic studies in sandstones at five stratigraphic sections representative of the sequences considered belonging to the Lower Cretaceous and Miocene in the northern sector of the Austral basin. Further X-ray diffraction preliminary studies at one profile (called Veranada de Gómez). Also, two lithostratigraphic units were dated and study by detrital zircons provenance. It is expected to determine for the study area, the beginning of the stage foreland, and an estimate is obtained the age of the exhumation of the regions of origin, and thus a semi-quantitative approach at a time the age of onset of uplift, as sediment dispersion models. The comprehensive analysis of these data will give the general pattern of palaeogeographic dispersal and sediments of the northern edge of Southern Basin to mesh with the southern sector pattern, which fed the study area. Moreover fragile deformation will be studied by analyzing faults striaes to characterize the deformation events in the area.
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Submitted on : Friday, October 26, 2018 - 11:44:07 AM
Last modification on : Monday, October 12, 2020 - 8:46:06 AM
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  • HAL Id : tel-01905933, version 1


Vanesa Barberon. Tectonic evolution of the northern depocenter of the Austral basin, Southern Patagonian Andes. Petrography. Université Bourgogne Franche-Comté; Universidad del Salvador (Buenos Aires), 2018. Español. ⟨NNT : 2018UBFCD058⟩. ⟨tel-01905933⟩



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