Chronostratigraphic data constraining Holocene glacial readvance from the Fildes Peninsula, South Shetland Islands, northern Antarctic Peninsula. ...

• Main Authors: Heredia Barion, Pablo, Strelin, Jorge, Spiegel, Cornelia, Binnie, Steven, Wacker, Lukas, Pearson, Emma, Bentley, Michael, Hocking, Emma, Roberts, Stephen
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2023
• Subjects: "EARTH SCIENCE","LAND SURFACE","EROSION/SEDIMENTATION","STRATIGRAPHIC SEQUENCE"; "EARTH SCIENCE","PALEOCLIMATE","LAND RECORDS","RADIOCARBON"; Deglaciation; South Shetland Islands; geomorphological mapping; glacial readvance; radiocarbon dating; stratigraphy; Antarctic; Antarctic Peninsula; Argentino; Bronk; Fildes; Fildes peninsula; islas Shetland del Sur; King George Island; Shetland del Sur; The Antarctic; Alfred Wegener Institute; Antarc*; antartic*
• Online Access: https://dx.doi.org/10.5285/b73794b8-5874-4c51-a2f2-fa895553dfcb; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01695

The dataset comprises of chronostratigraphic data from the Fildes Peninsula, King George Island, South Shetland Islands. The data consists of Radiocarbon (C-14) ages, which were obtained by Accelerator Mass Spectrometry (AMS) dating of marine mollusc shells, terrestrial mosses and seaweed layers embedded in sediments, and Cosmogenic Helium-3 (He-3) nuclide surface exposure dating (CSED). The data have been used to constrain deglaciation and climate-glacier dynamics on the Fildes Peninsula. 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); ... : Chronostratigraphic data Radiocarbon (C-14) dating: Moraines adjacent to the BIC were mapped and interpreted from field observations and satellite images (DigitalGlobe, Catalogue ID: 1030010020C0C900; Google Earth, 2006 and 2011). Contour lines are derived from the Antarctic Digital Database with elevation data (+/-5 m) obtained from the Instituto Antartico Uruguayo (1997). Radiocarbon ages from moraines and stratigraphic sections were obtained by Accelerator Mass Spectrometry (AMS) dating of marine mollusc shells, terrestrial mosses and seaweed layers embedded in sediments and represent maximum ages for BIC glacier readvance Calibration of marine sample radiocarbon ages (marine shells) was undertaken in Oxcal v. 4.4 using the Marine20 calibration curve (Bronk Ramsey, 2009; Heaton et al., 2020), and a newly recalculated local marine reservoir age offset (deltaR) of 666+/-76 C-14 years, which represents the weighted mean delta R of four radiocarbon-dated marine samples collected prior to 1950 CE from the ...