Chronological, geochemical and sedimentological data from a lake sediment record extracted from Lake L15 (GPS Lake) on Potter Peninsula, South Shetland Islands in 2011 ...

• Main Authors: Roberts, Stephen, Pearson, Emma, Czalbowski, Tamara, Davies, Sarah, Grosjean, Martin, Arcusa, Stephanie, Perren, Bianca
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2022
• Subjects: "EARTH SCIENCE","PALEOCLIMATE","OCEAN/LAKE RECORDS","STRATIGRAPHIC SEQUENCE"; "EARTH SCIENCE","PALEOCLIMATE","OCEAN/LAKE RECORDS","RADIOCARBON"; "EARTH SCIENCE","SOLID EARTH","GEOMORPHIC LANDFORMS/PROCESSES","GLACIAL LANDFORMS"; Deglaciation; South Shetland Islands; geomorphological mapping; glacial readvance; radiocarbon dating; stratigraphy; Appleby; Argentino; islas Shetland del Sur; King George Island; Oldfield; Potter Peninsula; Shetland del Sur; Alfred Wegener Institute; antartic*
• Online Access: https://dx.doi.org/10.5285/2031310d-1e35-4ea1-a1cc-cd318e82d394; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01685

The dataset comprises of lake site photos, data and multiproxy data from Lake L15 (aka GPS Lake), a small lake basin at 62.24057 S, 58.6776 W on Potter Peninsula, King George Island, South Shetland Islands. The data have been used to constrain deglaciation and glacier dynamics on Potter Peninsula. Data for the Lake L15 (GPS Lake) sediment record consist of downcore measurements of chronology, geochemistry, and sedimentology proxy data collected from the depocentre in November 2011. Data collected in this study were funded by: Centro de Investigaciones en Ciencias de la Tierra (CICTERRA), the Direccion Nacional del Antartico/Instituto Antartico Argentino (DNA/IAA) in the framework of the Project PICTA, 2011 - 0102, IAA "Geomorfologia y Geologia Glaciar del Archipielago James Ross e Islas Shetland del Sur, Sector Norte de la Peninsula Antartica"; the Alfred Wegener Institute (AWI) research program Polar regions and Coasts in a changing Earth System (PACES II); IMCONet (FP7 IRSES, action no. 318718); the ... : Core collection: Sediment cores were collected using a Russian and Livingston corers from the deepest point (around 2 m of water depth) in Lake L15 (GPS Lake) (L15: -62.24057 degrees S, -58.67760 degrees W, around 30 m a.s.l., 11-55 cm total recovered sediment depth). Eight cores were collected from a grid of 25 (around1 m spaced) holes drilled through the around 75-100 cm thick lake ice above the deepest accessible point (around 2 m): Data from L15-H2 (-62.24057 degrees S, -58.67760 degrees W) with 30 cm of sediment and L15-H16 (-62.24056 degrees S, -58.67757 degrees W) with 55 cm of sediment are included in this dataset. Other cores taken at this site were: L15-H4 = 11 cm, L15-H9 = 39 cm, L15-H17 = 45 cm, L15-H19 = 34 cm, L15-H20 = 61 cm and L15-H22 = 49 cm. Chronology: Pb-210 Cs-137 and Am-241 dating of the uppermost 10 cm of the lake sediment records was undertaken and dating model calculations followed standard procedures defined in Appleby and Oldfield (1978). Pb-210 age estimates were derived using ...