Overview of weathering in a small monolitholigic drainage basin: ?La Trucha?, Sierra de Comechingones, Córdoba, Argentina

CAMPODÓNICO, V., MARTÍNEZ, J., VERDECCHIA, S., PASQUINI, A.I., DEPETRIS, P.J.

Puerto Madryn

Congreso; XIV ReunIón Argentina de Sedimentología; 2014

Asociación Argentina de Sedimentología

The small studied drainage basin (~2 km2), herein known as ?La Trucha?, is located in the Southern portion of the Achala Batholith, within the Sierra de Comechingones. It is one of the southernmost ranges of the Sierras Pampeanas in central Argentina, which consist of Paleozoic basement blocks bounded by faults. In this contribution we compare the original country rock with the overlying regolith, seeking to establish relative gains and losses of major and trace elements, and REE that granite (Devonian) undergoes in a small and typical weathering-limited drainage basin. In so doing we seek to determine a stepping stone that will allow us to probe further into the nature of weathering in this region.