f1415ba4-35cd-40db-a717-db6693b03eb0 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:22:50 UK GEMINI 2.3 WGS 84 Stable isotope and U/Th speleothem measurements from Vietnam, 200,000–334 years BP 2024-07-25 publication https://catalogue.ceh.ac.uk/id/f1415ba4-35cd-40db-a717-db6693b03eb0 10.5285/f1415ba4-35cd-40db-a717-db6693b03eb0 doi: Ersek, V., Bendle, J. (2024). Stable isotope and U/Th speleothem measurements from Vietnam, 200,000–334 years BP. NERC EDS Environmental Information Data Centre 10.5285/f1415ba4-35cd-40db-a717-db6693b03eb0 The data includes carbon and oxygen stable isotopes together with top and bottom U-Th ages of stalagmites collected in Northwest, Central and Southern Vietnam. The purpose of this work was to identify suitable specimens that can be used for palaeoclimatic reconstructions. The stalagmites collected were found broken in-situ, and the exact location of the caves is not given here for cave protection purposes. The stalagmites were collected in February and March 2023, and geochemical analyses performed between April and December 2023. Full details about this dataset can be found at https://doi.org/10.5285/f1415ba4-35cd-40db-a717-db6693b03eb0 Ersek, V. Northumbria University vasile.ersek@northumbria.ac.uk https://orcid.org/0000-0001-9730-0007 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information pointOfContact Ersek, V. Northumbria University vasile.ersek@northumbria.ac.uk https://orcid.org/0000-0001-9730-0007 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Bendle, J. University of Birmingham j.bendle@bham.ac.uk https://orcid.org/0000-0002-6826-8658 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher Northumbria University EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian Geology theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication carbonate GEMET - Concepts, version 4.1.3 2019-01-28 creation Climate and climate change Environmental survey Vietnam palaeoclimate speleothem carbon isotopes oxygen isotopes stable isotopes otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Ersek, V., Bendle, J. (2024). Stable isotope and U/Th speleothem measurements from Vietnam, 200,000–334 years BP. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/f1415ba4-35cd-40db-a717-db6693b03eb0 textTable English utf8 climatologyMeteorologyAtmosphere geoscientificInformation 101.851 109.937 8.238 23.488 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/f1415ba4-35cd-40db-a717-db6693b03eb0 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/f1415ba4-35cd-40db-a717-db6693b03eb0.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Samples were brought to the laboratory from the field and cleaned with deionised water. The stalagmites were cut in half along the growth axis using a diamond wiresaw. Subsamples for stable isotopes and U-Th dating were collected using a Sherline 2000 micromill. Stable isotope values were calculated based on international standards NBS18 and IAEA60. U-Th ages are reported relative to 1950 CE and assume a Thorium-230/Thorium-232 atomic ratio of 4 (± 2) x 10e-6. Samples were completely dissolved in diluted hydrochloric acid and spiked with a Thorium-229/Uranium-233,236 tracer, after which they were converted to nitric form by boiling nitric acid. The U/Th separations were conducted with extraction chromatography and the final U and Th fractions were measured using a Thermo Scientific Neptune MC-ICPMS.