{
  "accessLevel": "public",
  "bureauCode": [
    "010:12"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Charles N Alpers",
    "hasEmail": "mailto:cnalpers@usgs.gov"
  },
  "description": "This dataset includes data for in-situ solid materials and suspended sediments from surface-water samples, as well as surface-water chemistry from samples collected during storm events at Malakoff Diggins State Historic Park, Nevada County, California. In-situ solid samples were collected during 2015 along six vertical transects along the cliff walls of the mine pit. Surface-water samples were collected during 2014 and 2016 from Hiller Tunnel and from drainage networks below the in-situ sampling sites during runoff conditions. In-situ and suspended-sediment samples were analyzed for grain-size distribution, X-ray diffraction (XRD) for quantitative mineralogy, inductively coupled plasma – mass spectrometry (ICP-MS) for trace elements, and inductively coupled plasma – optical emission spectroscopy (ICP-OES) for major elements. Water samples (both filtered and non-filtered) were analyzed for trace elements including aluminum, arsenic, barium, beryllium, cadmium, chromium, copper, iron, lead, mercury, nickel, zinc, and total suspended sediment. Water-quality field measurements included water temperature, specific conductance, dissolved oxygen, pH, and oxidation-reduction potential. There are four files (*.csv) in this dataset: 1) data dictionary; 2) sediment data; 3) water data; and 4) quality assurance data.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://doi.org/10.5066/P95RLMEI",
      "description": "Landing page for access to the data",
      "format": "XML",
      "mediaType": "application/http",
      "title": "Digital Data"
    },
    {
      "@type": "dcat:Distribution",
      "description": "The metadata original format",
      "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.5b51fb8ae4b05cbf87bfd5ca.xml",
      "format": "XML",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    }
  ],
  "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5b51fb8ae4b05cbf87bfd5ca",
  "keyword": [
    "Ancestral Yuba River",
    "California",
    "Cenozoic Era",
    "Eocene Epoch",
    "Humbug Creek drainage",
    "Malakoff Diggins State Historic Park",
    "Miocene Epoch",
    "Neogene Period",
    "Nevada County",
    "Oligocene Epoch",
    "Paleogene Period",
    "Sierra Nevada Mountains",
    "USGS:5b51fb8ae4b05cbf87bfd5ca",
    "Yuba River watershed",
    "clay minerals",
    "erosion",
    "geochemistry",
    "gold mining",
    "grain-size distribution",
    "hydraulic mining",
    "legacy mining effects",
    "mineralogy",
    "sediment transport",
    "suspended material (water)"
  ],
  "modified": "2020-08-12T00:00:00Z",
  "publisher": {
    "@type": "org:Organization",
    "name": "U.S. Geological Survey"
  },
  "spatial": "-120.93519, 39.36574, -120.90202, 39.39063",
  "theme": [
    "geospatial"
  ],
  "title": "Geochemical, mineralogical, and grain-size data for in-situ solid materials and suspended sediment at Malakoff Diggins State Historic Park, Nevada County, California"
}