{
"USGS Publications Warehouse": {
"@context": "https://schema.org",
"@type": "CreativeWork",
"additionalType": "Conference Paper",
"name": "Levelling and merging of two discrete national-scale geochemical databases: A case study showing the surficial expression of metalliferous black shales",
"identifier": [
{
"@type": "PropertyValue",
"propertyID": "USGS Publications Warehouse IndexID",
"value": "70189247",
"url": "https://pubs.usgs.gov/publication/70189247"
},
{
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"propertyID": "USGS Publications Warehouse Internal ID",
"value": 70189247
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],
"inLanguage": "en",
"datePublished": "2015",
"dateModified": "2017-07-06",
"abstract": "Government-sponsored, national-scale, soil and sediment geochemical databases are used to estimate regional and local background concentrations for environmental issues, identify possible anthropogenic contamination, estimate mineral endowment, explore for new mineral deposits, evaluate nutrient levels for agriculture, and establish concentration relationships with human or animal health. Because of these different uses, it is difficult for any single database to accommodate all the needs of each client. Smith et al. (2013, p. 168) reviewed six national-scale soil and sediment geochemical databases for the United States (U.S.) and, for each, evaluated \u201cits appropriateness as a national-scale geochemical database and its usefulness for national-scale geochemical mapping.\u201d Each of the evaluated databases has strengths and weaknesses that were listed in that review.Two of these U.S. national-scale geochemical databases are similar in their sample media and collection protocols but have different strengths\u2014primarily sampling density and analytical consistency. This project was implemented to determine whether those databases could be merged to produce a combined dataset that could be used for mineral resource assessments. The utility of the merged database was tested to see whether mapped distributions could identify metalliferous black shales at a national scale.",
"description": "9 p.",
"publisher": {
"@type": "Organization",
"name": "The Association of Applied Geochemists"
},
"author": [
{
"@type": "Person",
"name": "Neilson, Ryan T.",
"givenName": "Ryan T.",
"familyName": "Neilson"
},
{
"@type": "Person",
"name": "Giles, Stuart A. sgiles@usgs.gov",
"givenName": "Stuart A.",
"familyName": "Giles",
"email": "sgiles@usgs.gov",
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"value": "0000-0002-8696-5078",
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"affiliation": [
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"@type": "Organization",
"name": "Mineral Resources Program",
"url": "https://www.usgs.gov/programs/mineral-resources-program"
},
{
"@type": "Organization",
"name": "Central Mineral and Environmental Resources Science Center",
"url": "https://www.usgs.gov/centers/gggsc"
}
]
},
{
"@type": "Person",
"name": "Smith, Steven M. smsmith@usgs.gov",
"givenName": "Steven M.",
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"@type": "Organization",
"name": "Mineral Resources Program",
"url": "https://www.usgs.gov/programs/mineral-resources-program"
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"url": "https://www.usgs.gov/centers/gggsc"
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"name": "Central Mineral and Environmental Resources Science Center",
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