8f275626-5f22-48df-95e5-cdc8f204a897 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2022-09-01 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Beryllium-10 exposure ages for Pope Glacier from a scoria cone 1.5 km west of Mount Murphy in the Amundsen Sea Embayment 2022-09-01 creation 2022-09-01 revision 2022-09-01 publication 2022-09-01 released 1.0 https://doi.org/10.5285/8f275626-5f22-48df-95e5-cdc8f204a897 doi GB/NERC/BAS/PDC/01661 https://data.bas.ac.uk/ NE/S006710/1 award NE/S006753/1 award NE/K012088/1 award Please cite this item as: Adams, J., Rood, D., Wilcken, K., Roberts, S., & Johnson, J. (2022). Beryllium-10 exposure ages for Pope Glacier from a scoria cone 1.5 km west of Mount Murphy in the Amundsen Sea Embayment (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/8f275626-5f22-48df-95e5-cdc8f204a897 The dataset contains 12 new Be-10 cosmogenic nuclide surface exposure ages. The samples were collected from a scoria cone 1.5 km west of Mt. Murphy an exposed volcanic edifice adjacent to Pope Glacier in the Amundsen Sea Embayment, Antarctica. Samples of erratic cobbles which showed evidence of transport by ice were collected over the 2015-2016 AmuNdsen Sea Embayment Exposure Dating (ANISEED) Field Season, prepared at the CosmIC laboratory, Imperial College London and measured for Be-10 at the Australian Nuclear Science and Technology Organisation. Beryllium-10 concentrations were measured by Accelerated Mass Spectrometry (AMS). Samples were measured to determine timing of deglaciation of two rock outcrops to better constrain the ice sheet lowering history of Pope Glacier during the Holocene. Study forms part of the wider International Thwaites Glacier Collaboration Project (ITGC). Samples were collected by Dr. Joanne Johnson and Dr. Stephen Roberts (British Antarctic Survey), supported by field assistants Alistair Docherty and Iain Rudkin. Sample preparation for 10Be measurement was carried out by Jonathan Adams - PhD candidate affiliated with British Antarctic Survey/ Imperial College London under the supervision of Dr. Dylan Rood - Imperial College London. AMS measurements of Beryllium-10 concentrations were performed by Dr. Klaus Wilcken - Australia's Nuclear Science and Technology Organisation (ANSTO). National Science Foundation (NSF: Grant OPP-1738989) and Natural Environment Research Council (NERC: Grants NE/S006710/1, NE/S006753/1 and NE/K012088/1 and studentship to JRA). ITGC Contribution No. ITGC. No credit. completed Adams, Jonathan R British Antarctic Survey Researcher author Rood, Dylan H Imperial College London Researcher author Wilcken, Klaus Australian Nuclear Science and Technology Organisation Researcher author Roberts, Stephen J British Antarctic Survey Researcher author Johnson, Joanne S British Antarctic Survey Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Land Surface > Frozen Ground > Rock Glaciers EARTH SCIENCE > Solid Earth > Geomorphology > Glacial Landforms/Processes theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Accelerated Mass Spectrometry Amundsen Sea Embayment Beryllium-10 Exposure ages Pope Glacier theme Pope Glacier Antarctica Kay Peak Antarctica Mount Murphy Antarctica Crosson Ice Shelf Antarctica place Land cover Geology theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions Adams, J.R., Rood, D.H., Wilcken, K., Roberts, S.J., Johnson J.S. (2022). Beryllium-10 exposure ages for Pope Glacier from a scoria cone 1.5 km west of Mount Murphy in the Amundsen Sea Embayment (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/8F275626-5F22-48DF-95E5-CDC8F204A897 otherRestrictions No restrictions apply. url url largerWorkCitation doi doi crossReference url url largerWorkCitation url url crossReference textTable eng utf8 geoscientificInformation -111.0231 -111.0179 -75.21948 -75.21627 2015-12-10 2016-01-31 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/csv text/plain bytes 4465 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=8f275626-5f22-48df-95e5-cdc8f204a897 WWW:LINK-1.0-http--link Get Data Download data download bytes 4465 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=8f275626-5f22-48df-95e5-cdc8f204a897 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Quartz bearing erratic cobbles which showed evidence of transport by ice were collected at an exposed nunatak adjacent to Pope Glacier in the Amundsen Sea Embayment. Quartz mineral separation and Be-10 isotope dilution chemistry are largely based upon standard procedures (Kohl and Nishiizumi, 1992; Corbett, Bierman and Rood, 2016). The additional froth flotation step, used to separate feldspars from quartz was omitted as a precautionary measure (Nichols and Goehring, 2019). Once extracted from purified quartz, Be-10 AMS measurements were performed at the Australian Nuclear Science and Technology Organisation (ANSTO). Measurements were then normalized to the KN-5-3 standard with an assumed ratio of 6.320 x 10-12 (t1/2 = 1.36 Ma; Nishiizumi et al., 2007). Exposure ages were calculated via inputting Be-10 nuclide concentrations returned from AMS measurement using version 3 of the online calculators at hess.ess.washington.edu (Balco et al., 2008). The online calculators use the production rate scaling method for neutrons, protons and muons following Lifton et al., 2014 and summarised in Balco, 2017. Apparent exposure ages were reported assuming no erosion or snow cover and a material density of 2.7g cm-3 Data collection: Sirius 6MV tandem accelerator (accelerated mass spectrometer) Version 3 of online calculator at hess.ess.washington.edu (formerly known as CRONUS Online calculator). Data quality: Be-10/Be-9 measurements are normalized to the KN-5-3 standard with an assumed ratio of 6.320 x 10^-12 ( (t1/2=1.36 Ma, Nishiizumi et al., 2007) Scoria cone (CIN) Be samples and process blanks BLK140920A/B were prepared for analysis at the CosmIC labs, Imperial College London. AMS analysis was performed at ANSTO, Australia asNeeded completed