Date(s) - 02/11/2020
4:00 pm - 5:00 pm
The timing of alluvial fan deposition along the coast of the hyper-arid Atacama Desert – the interplay between climatic and tectonic control
by Melanie Bartz,
University of Lausanne
Coastal alluvial fans (CAF) along the western flank of the Coastal Cordillera in the Atacama Desert (northern Chile) are important geo-archives for unravelling Quaternary environmental change due to their sensitivity to both tectonic activity and climatic variations.
This research, however, is limited by the small amount of chronological data currently available to constrain these CAF deposits, which is important to understand the CAF evolution along a N-S gradient. Based on a combination of luminescence, electron spin resonance, and 10Be cosmogenic nuclide exposure dating as well as existing chronological data in the area, insights into climatic and tectonic variations along the hyper-arid coast between 20° and 25°S are presented for the Late Quaternary.