{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T22:19:34Z","timestamp":1767910774903,"version":"3.49.0"},"reference-count":64,"publisher":"Geological Society of London","issue":"1","license":[{"start":{"date-parts":[[2015,7,1]],"date-time":"2015-07-01T00:00:00Z","timestamp":1435708800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["GEEA"],"published-print":{"date-parts":[[2016,2]]},"abstract":"<jats:p>The National Geochemical Survey of Australia (NGSA) was carried out to bridge a vast knowledge gap about the concentration and distribution of chemical elements at the Earth\u2019s surface in Australia and consequent poor understanding of processes controlling their distribution here. The aim of the project was to contribute to improving exploration for energy and mineral resources through the pre-competitive delivery of a new spatial layer of compositional data and information.<\/jats:p>\n          <jats:p>\n            Surface (0\u201310\u2009cm depth) and shallow (\n            <jats:italic>c<\/jats:italic>\n            . 60\u201380\u2009cm) samples of catchment outlet sediments were collected from 1315 sites located near the outlet of 1186 catchments (\n            <jats:italic>c<\/jats:italic>\n            . 10% of which were sampled in duplicate) from across Australia. The total area covered by the survey was 6.174\u2009million km\n            <jats:sup>2<\/jats:sup>\n            , or\n            <jats:italic>c<\/jats:italic>\n            . 81% of Australia, at an average sampling density of 1 site per\n            <jats:italic>c<\/jats:italic>\n            . 5200\u2009km\n            <jats:sup>2<\/jats:sup>\n            . A number of field parameters (e.g. soil colour, pH), bulk parameters (e.g. electrical conductivity, particle size distribution) and geochemical parameters (i.e. multi-element composition of dry sieved &lt;2\u2009mm and &lt;75\u2009\u03bcm grain-size fractions) were determined. The grain-size fractions were analysed to determine (1) total, (2) aqua regia soluble, and (3) Mobile Metal Ion (MMI\u00ae) extractable element contents.\n          <\/jats:p>\n          <jats:p>\n            These data were collated into a spreadsheet and graphically represented as a series of 529 geochemical maps (\n            <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.ga.gov.au\/ngsa\">http:\/\/www.ga.gov.au\/ngsa<\/jats:ext-link>\n            ). These constitute the first continental-scale series of geochemical maps for Australia based on internally consistent, state-of-the-art data pertaining to the same sampling medium collected, prepared and analysed in a uniform and thoroughly documented manner and over a short time period. They are being used to better understand the accumulation, mobility and significance of chemical elements in the near-surface environment. Applications to date and ongoing and future directions are discussed.\n          <\/jats:p>\n          <jats:sec>\n            <jats:title>Supplementary material:<\/jats:title>\n            <jats:p>\n              Appendices 1-4 of summary statistics are available at\n              <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.geolsoc.org.uk\/SUP18853\">http:\/\/www.geolsoc.org.uk\/SUP18853<\/jats:ext-link>\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.1144\/geochem2014-322","type":"journal-article","created":{"date-parts":[[2015,7,2]],"date-time":"2015-07-02T00:33:00Z","timestamp":1435797180000},"page":"3-13","source":"Crossref","is-referenced-by-count":52,"title":["A continental-scale geochemical atlas for resource exploration and environmental management: the National Geochemical Survey of Australia"],"prefix":"10.1144","volume":"16","author":[{"given":"P.","family":"de Caritat","sequence":"first","affiliation":[{"name":"Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia"},{"name":"Research School of Earth Sciences, The Australian National University, Canberra ACT 2601, Australia"}]},{"given":"M.","family":"Cooper","sequence":"additional","affiliation":[{"name":"Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia"}]}],"member":"1881","published-online":{"date-parts":[[2015,7]]},"reference":[{"key":"e_1_3_2_2_1","unstructured":"Baldwin B. 2007. 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Riverina geochemical survey \u2013 A National First. AusGeo News 78 http:\/\/www.ga.gov.au\/ausgeonews\/ausgeonews200506\/geochem.jsp [last accessed 1 October 2014]"},{"key":"e_1_3_2_11_1","unstructured":"Caritat P. de Lech M.E. Jaireth S. Pyke J. & Fisher A. 2007. Riverina Region Geochemical Survey Southern New South Wales and Northern Victoria. Cooperative Research Centre for Landscape Environments and Mineral Exploration Open File Report 234 843 http:\/\/crcleme.org.au\/Pubs\/OFRSindex.html [last accessed 1 October 2014]"},{"key":"e_1_3_2_12_1","unstructured":"Caritat P. de Lech M.E. & Kernich A. 2008 a . Gawler Region Geochemical Survey South Australia. 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