Biological, chronological, geochemical and physical sedimentological data for the LP08 lake sediment record extracted from Lago Pato, Torres del Paine, Chile in 2007-2008 ...

• Main Authors: Roberts, Stephen, McCulloch, Robert, Davies, Sarah, Emmings, Joseph, Sterken, Mieke, Van de Vyver, Evelien, Van Nieuwenhuyze, Wim, Heirman, Katrien, Van Wichelen, Jeroen, Diaz, Carolina
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2022
• Subjects: "EARTH SCIENCE","PALEOCLIMATE","LAND RECORDS","GLACIATION"; "EARTH SCIENCE","PALEOCLIMATE","LAND RECORDS","POLLEN"; "EARTH SCIENCE","PALEOCLIMATE","OCEAN/LAKE RECORDS","SEDIMENTS"; "EARTH SCIENCE","PALEOCLIMATE"; "EARTH SCIENCE","CLIMATE INDICATORS","PALEOCLIMATE INDICATORS","PALEOCLIMATE RECONSTRUCTIONS","LAKE LEVEL RECONSTRUCTION"; Antarctic; Magallanes; Esperanza; Diaz; Paine; Antarc*; British Antarctic Survey
• Online Access: https://dx.doi.org/10.5285/c75ea98b-080e-455e-a54f-a9e8cf07aa73; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01612

The dataset comprises of site data and multiproxy analyses of LP08 lake sediment cores extracted from Lago Pato, a small lake basin at -51.3003, -72.6786 and approx 33 m a.s.l., which is topographically separated from Lago del Toro in Torres del Paine (TdP). The data are used to constrain glacier dynamics and lake level change in the TdP and Ultima Esperanza region over the last approx 30,000 cal a BP (30 ka). Data for the LP08 sediment record consist of downcore measurements of biology, chronology, geochemistry, sedimentology proxy data collected from the current depocentre between November 2007 to March 2008. This project was funded by the Natural Environment Research Council (NERC) through the British Antarctic Survey (BAS) and an UGent BOF bilateral collaboration project. RMcC was supported by Programa Regional R17A10002 and R20F0002 (PATSER) ANID. We gratefully acknowledge the University of Magallanes (UMAG) and the University of Santiago (Carolina Diaz) for assistance with fieldwork; the NERC/SUERC AMS ... : Sediment cores were collected using a UWITEC-gravity corer, Livingston piston corer from the deepest point (approx 3.5 m of water depth) in Lago Pato (LP08: 51.3003 S, 72.6786 W, 32 m a.s.l., 600 cm total recovered sediment depth). Biology Subsamples for diatom and stomatocyst analysis were taken at 4 cm and 8 cm intervals from the LP08 core. At least 400 valves were counted per slide and species were identified to at least genus level using taxonomic studies from the region. Microscopic pollen, charcoal and cryptotephra shards were counted at 8 cm intervals in the LP08 core) with Lycopodium spores of known concentration added for quantification. The total pollen sum from each subsample is at least 300 land pollen grains (Total Land Pollen, TLP) above 470 cm in the LP08. Charcoal was classified in five different size classes, more than 25 micrometers, 25-50 micrometers, 50-75 micrometers, 75-100 micrometers, and more than 100 micrometers, to distinguish between proximal and distal fires. Chronology A ...