A multiproxy approach to reconstruct the environmental changes in Lago Toncek (Patagonia, Argentina): Preliminary studies

C. S. G. GOGORZA; IRURZUN, M.A.; QUINTANA, F.; CHRISTOPH MAYR; TANJA WESTERNACHER; MASSAFERRO, JULIETA

Évora

Congreso; Castle Meeting - New trends on Paleo, Rock and Environmental Magnetism; 2014

Instituto Dom Luiz Laboratorio Associado - ISEL - Institute of Geophysics - MAGIBER - ICTER - Gobierno de Portugal

Abstract: Lake sediments are excellent sources of palaeoenvironmental and palaeoclimatic information because they provide continuous and high-resolution records. They are also first class recorders of magnetic parameters widely used around the world as proxies for paleoenvironmental variations, because every change in the catchment area (rainfall and drought periods, temperature changes, differences in sedimentation rates) is likewise reflected in variations of the magnetic parameters. This study was carried out on cores collected from the Laguna Toncek (41°11'52.72"S, 71°29'17.45" W, 1750 m asl), a small lake with 0.03 km2 surface area and 12 m maximum depth, of glacial origin, situated in Catedral mountain in the Nahuel Huapi National Park of northern Patagonia.