Abstract:
The dataset comprises of sedimentological, geochemical, biological and chronological data from a sediment core record extracted from Kiteschsee Lake sediment, Fildes Peninsula, King George Island, South Shetland Islands. We undertook multi-proxy analyses (diatom, grain size, geochemical and sedimentological) on a 77 cm-long sediment record extracted from the flat-bottomed eastern basin depocentre of Kiteschsee Lake and compared data obtained with published lake records from 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); the Natural Environment Research Council (NERC/BAS-CGS Grant no.81); the NERC/BAS science programmes CACHE-PEP: Natural climate variability - extending the Americas palaeoclimate transect through the Antarctic Peninsula to the pole and GRADES-QWAD: Quaternary West Antarctic Deglaciations. We thank the crews of the Argentine research station "Carlini" and the adjoined German Dallmann-Labor (AWI) Laboratory, the Uruguayan research station "Artigas", the Russian Bellingshausen Station, the Chinese Great Wall Station, Base Presidente Eduardo Frei Montalva, the Brazilian Navy Almirante Maximiano, the UK Navy HMS Endurance and NERC/BAS James Clark Ross for logistical support during the 2006, 2011, 2014 and 2015 field seasons.
Keywords:
Deglaciation, Geomorphological mapping, Radiocarbon dating, South Shetland Islands, glacial readvance, stratigraphy
Roberts, S., Pearson, E., Davies, J., Jones, V., Gabriel, I., Blockley, S., Davies, S., & Roland, T. (2023). Sedimentological, geochemical, biological and chronological data from a sediment core record extracted from Kiteschsee Lake, Fildes Peninsula, South Shetland Islands, northern Antarctic Peninsula (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/e117045d-ab43-4d0d-9e14-5b6d9a03b301
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. Cite this data as: Roberts, S., Pearson, E., Davies, J., Jones, V., Gabriel, I., Blockley, S., Davies, S., & Roland, T. (2023). Sedimentological, geochemical, biological and chronological data from a sediment core record extracted from Kiteschsee Lake, Fildes Peninsula, South Shetland Islands, northern Antarctic Peninsula (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/E117045D-AB43-4D0D-9E14-5B6D9A03B301 |
| Creation Date: | 2023-02-21 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK Polar Data Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Stephen J Roberts |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Emma J Pearson |
| Role(s) | Investigator |
| Organisation | Newcastle University |
| Name | Joanna Davies |
| Role(s) | Investigator |
| Organisation | University Collage London |
| Name | Imogen Gabriel |
| Role(s) | Investigator |
| Organisation | Royal Holloway |
| Name | Simon Blockley |
| Role(s) | Investigator |
| Organisation | Royal Holloway |
| Name | Sarah J Davies |
| Role(s) | Investigator |
| Organisation | Aberystwyth University |
| Name | Dr Thomas Roland |
| Role(s) | Investigator |
| Organisation | Department of Geography |
| Name | Vivienne Jones |
| Role(s) | Investigator |
| Organisation | University College London |
| Parent Dataset: | N/A |
| Reference: | Blaauw M and Christen JA. (2011) Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Analysis 6: 457-474. Heredia Barion, P., Roberts, S.J., Spiegel, C., et al. (2023). Holocene deglaciation and glacier readvances on the Fildes Peninsula, King George Island, NW Antarctic Peninsula. The Holocene. https://doi.org/10.1177/09596836231157059 Heredia Barion, P.A., Strelin, J.A., Roberts, S.J., et al. (2022). The impact of Holocene deglaciation and glacial dynamics on the landscapes and geomorphology of Potter Peninsula, King George Island (Isla 25 Mayo), NW Antarctic Peninsula. Frontiers in Earth Science https://doi.org/10.3389/feart.2022.1073075 |
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| Quality: | To account for downcore variations in count rate, density, water and organic content, XRF-CS data are presented as relative changes in percentages of the Total Scatter Normalised ratio sum (%TSN), which is equivalent to the %cps sum and as natural log ratios and centred log ratios (clr). Log ratios have been shown to produce similar downcore patterns to more traditional, and fully quantitative, Wavelength Dispersive Spectroscopy, WDS-XRF, dry subsample analysis. Data were filtered to remove the small number of downcore spectra with kcps less than mean minus two-SD, caused mainly by small gaps in the core, and MSE values greater than mean plus four-SD as this represents a poor fit of the measured to theoretical energy spectra. | |
| Lineage: | We undertook multi-proxy analyses (diatom, grain size, geochemical and sedimentological) on a 77 cm-long sediment record extracted from the flat-bottomed eastern basin depocentre of Kiteschsee Lake and compared data obtained with published lake records from the Fildes Peninsula. A chronology for the Kiteschsee Lake sediment record was based on two aquatic moss ages, six bulk sediment AMS radiocarbon ages, and four tephra correlation ages and established using Bayesian age-depth modelling in BACON v. 2.5 in R (Blaauw and Christen, 2011). | |
| Temporal Coverage: | |
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| Start Date | 2011-11-01 |
| End Date | 2011-11-30 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -62.19349 |
| Northernmost | -62.19349 |
| Longitude | |
| Westernmost | -58.96665 |
| Easternmost | -58.96665 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | South Shetland Islands |
| Detailed Location | Kiteschsee Lake, Fildes Peninsula, South Shetland Islands |
| Data Collection: | High resolution X-ray fluorescence (ITRAX) core scanning (XRF-CS) of bulk sediment was performed at contiguous 0.02 cm (200 micrometers) intervals following standard procedures on the ITRAX-XRF machine at Aberystwyth University. |
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| Distribution: | |
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| Distribution Media | N/A |
| Distribution Size | 24.5 MB, 41 files |
| Distribution Format | N/A |
| Fees | N/A |
| Data Storage: | 3_Kiteschsee Lake data folder This folder contains the following folders and data files Biological data folder - KITE_Diatoms_pc.csv - percentage count diatom data - KITE_Diatom_CONISS_PCA_sqrt.csv - diatom data used in PCA analysis Geochemical and sedimentological data folder - Kite_ITRAX - folder containing ITRAX XRF core scanning datafiles - KITE_ITRAX_200um_cps_TSN.csv - summary cps (count per second) and Total Scatter Normalised data, equivalent to percentage of cps (count per second) sum data for ITRAX X-ray fluorescence core scanning (XRF-CS) analysis - KITE_ITRAX_200um_TSN_qc.csv - percentage Total Scatter Normalised data, equivalent to percentage of cps (count per second) sum summary data for ITRAX X-ray fluorescence core scanning (XRF-CS) analysis (quality controlled - qc - filtered) - Kite1.1_basal folder - folder containing document settings txt file, summary output txt files, summary average spectra txt file, and optical and X-ray image tifs and a folder with all raw XRF spectra txt files for the Kite 1.1 core section Kite2.1_top folder - folder containing document settings txt file, summary output txt files, summary average spectra txt file, and optical and X-ray image tifs and a folder with all raw XRF spectra txt files for the Kite 2.1 core section - KITE_DMAR_MSCLDensity.csv_subsample density and GEOTEK MSCL (multi-sensor core logger) density data compared - KITE_GEOTEK_MSCL_0.5cm.csv - GEOTEK MSCL data - KITE_LOI_GrainSize.csv - grain size and loss-on-ignition data for the Kiteschsee Lake record - KITE_Tephra_Count_data.csv - tephra shard count data for the Kiteschsee Lake record - EPMA_db.csv - new compilation of major element tephra shard geochemistry from South America and the Antarctic used for data analysis and comparison tephra data from to the Kiteschsee Lake record Chronological data folder - Age_depth_model folder - input and output txt and csv files for age-depth modelling runs from the Kiteschsee Lake record - Kite_C14_data.csv - radiocarbon ages from the Kiteschsee Lake record |