Glacial geomorphologic maps of Llanquihue drift in the area of the southern Lake District, Chile

We present four glacial geomorphic maps of Llanquihue drift in the region o f the southern Lake District, Seno Reloncavi, and the eastern half of north ern Isla Grande de Chiloe, Chile. These maps form the basis of an interdisc iplinary research project to establish a paleoclimate reconstruction of the last glacial cycle in the middle latitudes of the Southern Hemisphere. The refore we stressed morphologic rather than lithologic units in our mapping program in order to delineate the glacial geomorphic forms that are surface manifestations of former ice-marginal fluctuations. The resulting maps sho w the lobate shape and low surface slopes of the former piedmont glaciers t hat, at the last glacial maximum, spread westward from the Andes into the V alle Central to fill Lago Puyehue, Lago Rupanco,Lago Llanquihue, Seno Relon cavi, Golfo de Ancud, and northern Gulfo Corcovado. These maps are the fram ework to tie together in this volume the stratigraphic sections and radioca rbon samples from within the Llanquihue moraine belts as well as the pollen cores from surface mires on the belts.