Geología y geomorfología de la cuenca del estero Yerba Loca, Chile central

Geology and geomorphology of the Yerba Loca stream basin, central Chile

Clavero, J., Pérez-Martínez, W., Ramírez, V., Castro-Cancino, B., Briceño-Urbaneja, I., Vidal-Páez, P., Tamayo, A.

Published in

En Orrego, F., Ginocchio, R., De La Fuente, L. M. y Parra, D. (Eds.), Antecedentes socio-ecológicos del Santuario de la Naturaleza Yerba Loca: pasado, presente y futuro (cap. 2, pp. 42–63). Anglo American. ISBN 978-956-414-179-4.

Institutions

Universidad Mayor (Hémera), Amawta Geoconsultores, Anglo American

Original language

Spanish

Topics

Central Chile · Regional geology · Geomorphology · Yerba Loca

Keywords

Yerba Loca, U-Pb geochronology, geomorphology, Farellones Formation, Abanico Formation

Abstract

Synthesis of the geological and geomorphological evolution of the Yerba Loca basin (≈108 km²), with six new U-Pb ages (33 to 13 Ma) for the Abanico and Farellones formations and a map of landforms grouped into seven systems.

The basin records the evolution of the Abanico Basin (Eocene–Oligocene), the Miocene volcanic arc of the Farellones Formation, intrusions of 14 to 6 Ma (some with hydrothermal breccias and copper mineralisation) and the compressive deformation of the Early to Middle Miocene.

Morphometric analysis indicates a young basin with high erosive potential. Seven geomorphological systems are defined (lithostructural, glacial, periglacial, nival, gravitational, alluvial and fluvial), and the study warns of the basin’s susceptibility to mass movements under climate change.

Full document

How to cite

Related publications

← Back to Publications