We reconstruct the Late Holocene sedimentary history of Laguna Chungara (69° 30' W, 18° 10'S, 4520 m.a.s.l., northern Chilean Altiplano) based on high resolution seismic profiling and sedimentologic analyses of cores. Two sedimentary facies associations have been defined and interpreted: i) macrophytedominant littoral, composed of black muds with macrophyte remains and peaty muds, and ii) Characeae-dominant lacustrine self, composed of gray muds and sands with abundant Characeae remains. The two facies associations define three cycles caused by oscillations in the lake level from shallower (macrophyte) to deeper (Characeae) conditions. Changes in the hydrology of Laguna Chungara reflect variations in the effective moisture (precipitation - evaporation) in the Altiplano during the Late Holocene.
|Translated title of the contribution||The Laguna Chungara limnogeology and climatic change during the late Holocene in the northern Chilean Altiplano|
|Number of pages||10|
|Journal||Cadernos Laboratorio Xeoloxico de Laxe|
|State||Published - 1996|
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
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