Figure 1
From: Glacial lake drainage in Patagonia (13-8 kyr) and response of the adjacent Pacific Ocean
(a) Southern South America with the location of the Lago General Carrera/Lago Buenos Aires and Lago Cohrane/Pueyrredón basins. The Last Glacial Maximum (LGM) extent of the former Patagonian Ice Sheet and the contemporary North and South Patagonian Icefields (NPI and SPI) are indicated. Details of offshore core locations are discussed in the Supplementary Information. (b) Elevation distribution of glacial lake shoreline features (in grey) generated by pixel-counting in a Digital Elevation Model. To generate these data we mapped all glacial lake shoreline features and counted the number of pixels occupied by the features. The higher the pixel count, the more widespread the feature. Solid black line shows the running mean. Glacial Lake Stages are indicated by letters A to E. Analysed OSL dates with error bars are presented on the left hand side of the panel at their correct elevation. Label C-1 to C-5 show the position of bedrock cols and Labels Ds-1 to Ds-9 indicate lake drainage sites. (c) Geomorphological evidence for the extent of the former glacial lakes, place names mentioned in the text and the locations of OSL samples dated in this study. The geomorphological evidence is a combination of previous mapping of glacial landforms28 and new mapping of features related to the former glacial lakes. All maps were created in ArcGIS (ArcMap 10.2.2; http://www.esri.com/software/arcgis).
