{
  "@context": {
    "schema": "http://schema.org/",
    "dcterms": "http://purl.org/dc/terms/",
    "geosparql": "http://www.opengis.net/ont/geosparql#",
    "spdx": "http://spdx.org/rdf/terms#",
    "cdi": "http://ddialliance.org/Specification/DDI-CDI/1.0/RDF/",
    "cdif": "https://cdif.org/0.1/",
    "csvw": "http://www.w3.org/ns/csvw#",
    "prov": "http://www.w3.org/ns/prov#",
    "time": "http://www.w3.org/2006/time#",
    "dqv": "http://www.w3.org/ns/dqv#",
    "sf": "http://www.opengis.net/ont/sf#",
    "ex": "https://example.org/",
    "xsd": "http://www.w3.org/2001/XMLSchema#",
    "dcat": "http://www.w3.org/ns/dcat#"
  },
  "@id": "ex:complete-dataset-001",
  "@type": [
    "schema:Dataset"
  ],
  "schema:name": "Multi-technique geochemistry dataset with archive and API access",
  "schema:description": "Comprehensive geochemistry dataset demonstrating the CDIF complete profile with single-file downloads, archive distribution with component files, and WebAPI access. Includes tabular CSV results, NetCDF data cubes, and an OGC API Features endpoint.",
  "schema:additionalType": [
    "geochemistry analysis"
  ],
  "schema:identifier": {
    "@type": [
      "schema:PropertyValue"
    ],
    "schema:propertyID": "https://registry.identifiers.org/registry/doi",
    "schema:value": "10.5880/example.complete.001",
    "schema:url": "https://doi.org/10.5880/example.complete.001"
  },
  "schema:sameAs": [
    {
      "@type": [
        "schema:PropertyValue"
      ],
      "schema:value": "urn:example:geochem:complete-001"
    }
  ],
  "schema:version": "1.0",
  "schema:url": "https://example.org/datasets/complete-001",
  "schema:inLanguage": "en",
  "schema:dateModified": "2026-02-15",
  "schema:datePublished": "2026-02-01",
  "schema:license": [
    "https://creativecommons.org/licenses/by/4.0/"
  ],
  "schema:conditionsOfAccess": [
    "Open access; citation required"
  ],
  "schema:keywords": [
    {
      "@type": [
        "schema:DefinedTerm"
      ],
      "schema:name": "geochemistry",
      "schema:identifier": {
        "@type": [
          "schema:PropertyValue"
        ],
        "schema:propertyID": "https://vocabularyserver.com/keyword",
        "schema:value": "geochem-001",
        "schema:url": "https://vocabularyserver.com/keyword/geochem-001"
      },
      "schema:inDefinedTermSet": "https://vocabularyserver.com/keyword",
      "schema:termCode": "GEOCHEM"
    },
    {
      "@type": [
        "schema:DefinedTerm"
      ],
      "schema:name": "spectral analysis",
      "schema:identifier": {
        "@type": [
          "schema:PropertyValue"
        ],
        "schema:propertyID": "https://vocabularyserver.com/keyword",
        "schema:value": "spectral-001",
        "schema:url": "https://vocabularyserver.com/keyword/spectral-001"
      },
      "schema:inDefinedTermSet": "https://vocabularyserver.com/keyword",
      "schema:termCode": "SPECTRAL"
    }
  ],
  "schema:creator": {
    "@list": [
      {
        "@id": "https://orcid.org/0000-0001-2345-6789",
        "@type": [
          "schema:Person"
        ],
        "schema:name": "Smith, Jane",
        "schema:alternateName": "J. Smith",
        "schema:description": "Geochemistry researcher specializing in trace element analysis and environmental mineralogy",
        "schema:affiliation": {
          "@id": "https://ror.org/03m2x1q45",
          "@type": [
            "schema:Organization"
          ],
          "schema:name": "University of Arizona"
        },
        "schema:contactPoint": {
          "@type": [
            "schema:ContactPoint"
          ],
          "schema:email": "jsmith@arizona.edu"
        },
        "schema:identifier": {
          "@type": [
            "schema:PropertyValue"
          ],
          "schema:propertyID": "https://orcid.org",
          "schema:value": "0000-0001-2345-6789",
          "schema:url": "https://orcid.org/0000-0001-2345-6789"
        }
      }
    ]
  },
  "schema:publisher": {
    "@id": "ex:ieda-publisher",
    "@type": [
      "schema:Organization"
    ],
    "schema:name": "IEDA-",
    "schema:alternateName": "Interdisciplinary Earth Data Alliance",
    "schema:description": "An NSF-supported data facility for geochemistry and related disciplines",
    "schema:identifier": {
      "@type": [
        "schema:PropertyValue"
      ],
      "schema:propertyID": "https://registry.identifiers.org/registry/ror",
      "schema:value": "02fjgr047",
      "schema:url": "https://ror.org/02fjgr047"
    }
  },
  "schema:funding": [
    {
      "@type": [
        "schema:MonetaryGrant"
      ],
      "schema:identifier": {
        "@type": [
          "schema:PropertyValue"
        ],
        "schema:propertyID": "NSF award number",
        "schema:value": "EAR-2026932",
        "schema:url": "https://www.nsf.gov/awardsearch/showAward?AWD_ID=2026932"
      },
      "schema:name": "Geochemistry Data Infrastructure",
      "schema:funder": {
        "@id": "https://ror.org/021nxhr62"
      }
    }
  ],
  "schema:provider": [
    {
      "@id": "https://ror.org/02fjgr047",
      "@type": [
        "schema:Organization"
      ],
      "schema:name": "IEDA-",
      "schema:url": "https://www.earthchem.org/"
    }
  ],
  "schema:contributor": [
    {
      "@type": [
        "schema:Role"
      ],
      "schema:roleName": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "Data Manager",
        "schema:inDefinedTermSet": "https://credit.niso.org/",
        "schema:termCode": "data-curation"
      },
      "schema:contributor": {
        "@id": "https://orcid.org/0000-0003-5555-7777",
        "@type": [
          "schema:Person"
        ],
        "schema:name": "Lee, Robert",
        "schema:contactPoint": {
          "@type": [
            "schema:ContactPoint"
          ],
          "schema:email": "rlee@example.org"
        }
      }
    },
    {
      "@id": "https://ror.org/03m2x1q45",
      "@type": [
        "schema:Organization"
      ],
      "schema:name": "University of Arizona"
    }
  ],
  "schema:measurementTechnique": [
    {
      "@type": [
        "schema:DefinedTerm"
      ],
      "schema:name": "Inductively Coupled Plasma Mass Spectrometry",
      "schema:identifier": {
        "@type": [
          "schema:PropertyValue"
        ],
        "schema:propertyID": "https://vocab.nerc.ac.uk/collection/L05/current/",
        "schema:value": "LAB21",
        "schema:url": "https://vocab.nerc.ac.uk/collection/L05/current/LAB21/"
      },
      "schema:inDefinedTermSet": "https://vocab.nerc.ac.uk/collection/L05/current/",
      "schema:termCode": "ICP-MS"
    }
  ],
  "schema:spatialCoverage": [
    {
      "@type": [
        "schema:Place"
      ],
      "schema:name": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "Great Basin physiographic province",
        "schema:identifier": {
          "@type": [
            "schema:PropertyValue"
          ],
          "schema:propertyID": "https://www.geonames.org/",
          "schema:value": "5509151",
          "schema:url": "https://www.geonames.org/5509151"
        },
        "schema:inDefinedTermSet": "https://www.geonames.org/",
        "schema:termCode": "5509151"
      },
      "schema:alternateName": [
        "Great Basin"
      ],
      "schema:geo": {
        "@type": [
          "schema:GeoShape"
        ],
        "schema:box": "36.0 -120.0 42.0 -114.0"
      },
      "geosparql:hasGeometry": {
        "@type": [
          "sf:Polygon"
        ],
        "geosparql:asWKT": {
          "@type": [
            "geosparql:wktLiteral"
          ],
          "@value": "POLYGON((-120.0 36.0, -114.0 36.0, -114.0 42.0, -120.0 42.0, -120.0 36.0))"
        },
        "geosparql:crs": {
          "@id": "http://www.opengis.net/def/crs/OGC/1.3/CRS84"
        }
      }
    }
  ],
  "schema:temporalCoverage": [
    {
      "@type": [
        "time:ProperInterval"
      ],
      "schema:description": "Field sampling and laboratory analysis period",
      "time:hasBeginning": {
        "@type": [
          "time:Instant"
        ],
        "time:inXSDDate": "2025-06-01"
      },
      "time:hasEnd": {
        "@type": [
          "time:Instant"
        ],
        "time:inXSDDate": "2025-09-30"
      }
    },
    "2025-06-01/2025-09-30"
  ],
  "schema:relatedLink": [
    {
      "@type": [
        "schema:LinkRole"
      ],
      "schema:linkRelationship": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "related dataset",
        "schema:inDefinedTermSet": "https://www.iana.org/assignments/link-relations/",
        "schema:termCode": "related"
      },
      "target": {
        "@type": [
          "schema:EntryPoint"
        ],
        "schema:name": "Regional geology map of the Great Basin",
        "schema:url": "https://example.org/maps/great-basin-geology",
        "schema:encodingFormat": "image/png"
      }
    }
  ],
  "schema:publishingPrinciples": [
    {
      "@type": [
        "schema:CreativeWork",
        "dcat:Relationship"
      ],
      "schema:name": "IEDA Data Management Plan",
      "schema:description": "Describes data curation, versioning, and long-term preservation policies for IEDA-hosted datasets",
      "schema:url": "https://www.iedadata.org/help/data-publication/"
    }
  ],
  "schema:distribution": [
    {
      "@type": [
        "schema:DataDownload",
        "cdi:PhysicalDataSet"
      ],
      "schema:name": "Geochemistry summary results",
      "schema:contentUrl": "https://example.org/data/geochem-summary.csv",
      "schema:encodingFormat": [
        "text/csv"
      ],
      "spdx:checksum": {
        "@type": [
          "spdx:Checksum"
        ],
        "spdx:algorithm": "SHA256",
        "spdx:checksumValue": "a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2"
      },
      "schema:provider": [
        {
          "@id": "https://ror.org/02fjgr047",
          "@type": [
            "schema:Organization"
          ],
          "schema:name": "IEDA-"
        }
      ],
      "dcterms:conformsTo": [
        {
          "@id": "http://www.opengis.net/def/nil/OGC/0/missing"
        }
      ]
    },
    {
      "@type": [
        "schema:DataDownload",
        "cdi:TabularTextDataSet",
        "cdi:PhysicalDataSet"
      ],
      "schema:name": "Detailed geochemistry analysis results",
      "schema:contentUrl": "https://example.org/data/geochem-detailed.csv",
      "schema:encodingFormat": [
        "text/csv"
      ],
      "spdx:checksum": {
        "@type": [
          "spdx:Checksum"
        ],
        "spdx:algorithm": "SHA256",
        "spdx:checksumValue": "b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3"
      },
      "cdi:isDelimited": true,
      "cdi:isFixedWidth": false,
      "csvw:delimiter": ",",
      "csvw:header": true,
      "csvw:headerRowCount": 1,
      "cdi:arrayBase": 0,
      "csvw:commentPrefix": "#",
      "csvw:lineTerminators": "LF",
      "csvw:quoteChar": "\"",
      "csvw:skipBlankRows": false,
      "csvw:skipColumns": 0,
      "csvw:skipInitialSpace": true,
      "csvw:skipRows": 0,
      "cdi:escapeCharacter": "\\",
      "cdi:headerIsCaseSensitive": false,
      "cdi:treatConsecutiveDelimitersAsOne": false,
      "csvw:tableDirection": "Ltr",
      "csvw:textDirection": "Auto",
      "csvw:trim": "true",
      "countRows": 461,
      "countColumns": 3,
      "cdif:hasPhysicalMapping": [
        {
          "cdif:index": 0,
          "cdif:format": "string",
          "cdif:physicalDataType": "string",
          "cdi:isRequired": true,
          "cdi:defaultValue": "UNKNOWN",
          "cdi:minimumLength": 3,
          "cdi:maximumLength": 40,
          "cdif:formats_InstanceVariable": {
            "@id": "ex:var-sampleID"
          }
        },
        {
          "cdif:index": 1,
          "cdif:format": "decimal",
          "cdif:physicalDataType": "float64",
          "cdi:nullSequence": "NA",
          "cdi:isRequired": true,
          "cdi:decimalPositions": 4,
          "cdif:formats_InstanceVariable": {
            "@id": "ex:var-concentration"
          }
        },
        {
          "cdif:index": 2,
          "cdif:format": "decimal",
          "cdif:physicalDataType": "float64",
          "cdi:nullSequence": "-9999",
          "cdi:isRequired": false,
          "cdi:decimalPositions": 4,
          "cdi:length": 12,
          "cdif:formats_InstanceVariable": {
            "@id": "ex:var-uncertainty"
          }
        }
      ],
      "dcterms:conformsTo": [
        {
          "@id": "http://www.opengis.net/def/nil/OGC/0/missing"
        }
      ]
    },
    {
      "@type": [
        "schema:DataDownload",
        "cdi:StructuredDataSet",
        "cdi:PhysicalDataSet"
      ],
      "schema:name": "Spectral data cube",
      "schema:contentUrl": "https://example.org/data/spectra-cube.nc",
      "schema:encodingFormat": [
        "application/x-netcdf"
      ],
      "spdx:checksum": {
        "@type": [
          "spdx:Checksum"
        ],
        "spdx:algorithm": "SHA256",
        "spdx:checksumValue": "c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4"
      },
      "cdif:hasPhysicalMapping": [
        {
          "cdif:format": "decimal",
          "cdif:physicalDataType": "float32",
          "cdi:locator": "/spectra/wavelength",
          "cdi:isRequired": true,
          "cdif:formats_InstanceVariable": {
            "@id": "ex:var-wavelength"
          }
        },
        {
          "cdif:format": "decimal",
          "cdif:physicalDataType": "float32",
          "cdi:locator": "/spectra/intensity",
          "cdi:scale": 1000,
          "cdi:isRequired": true,
          "cdif:formats_InstanceVariable": {
            "@id": "ex:var-intensity"
          }
        }
      ],
      "dcterms:conformsTo": [
        {
          "@id": "http://www.opengis.net/def/nil/OGC/0/missing"
        }
      ]
    },
    {
      "@type": [
        "schema:DataDownload",
        "cdi:PhysicalDataSet"
      ],
      "schema:name": "Complete data package",
      "schema:contentUrl": "https://example.org/data/geochem-package.zip",
      "schema:encodingFormat": [
        "application/zip"
      ],
      "schema:description": "Archive containing all data files. Component files are listed as parts and are not individually accessible.",
      "spdx:checksum": {
        "@type": [
          "spdx:Checksum"
        ],
        "spdx:algorithm": "SHA256",
        "spdx:checksumValue": "d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5"
      },
      "schema:hasPart": [
        {
          "@type": [
            "schema:MediaObject"
          ],
          "@id": "#part-results-csv",
          "schema:name": "geochem-detailed.csv",
          "schema:description": "Detailed geochemistry analysis results in tabular format.",
          "schema:encodingFormat": [
            "text/csv"
          ],
          "schema:size": {
            "@type": [
              "schema:QuantitativeValue"
            ],
            "schema:value": 10860,
            "schema:unitText": "byte"
          },
          "spdx:checksum": {
            "@type": [
              "spdx:Checksum"
            ],
            "spdx:algorithm": "SHA256",
            "spdx:checksumValue": "b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3"
          }
        },
        {
          "@type": [
            "schema:MediaObject",
            "cdi:TabularTextDataSet"
          ],
          "@id": "#part-measurements-csv",
          "schema:name": "geochem-measurements.csv",
          "schema:description": "Measurement data with column structure described via CSVW and physical mappings.",
          "schema:encodingFormat": [
            "text/csv"
          ],
          "schema:size": {
            "@type": [
              "schema:QuantitativeValue"
            ],
            "schema:value": 6249,
            "schema:unitText": "byte"
          },
          "cdi:isDelimited": true,
          "csvw:delimiter": ",",
          "csvw:header": true,
          "csvw:headerRowCount": 1,
          "countRows": 144,
          "countColumns": 3,
          "cdif:hasPhysicalMapping": [
            {
              "cdif:index": 0,
              "cdif:format": "string",
              "cdif:physicalDataType": "string",
              "cdi:isRequired": true,
              "cdif:formats_InstanceVariable": {
                "@id": "ex:var-sampleID"
              }
            },
            {
              "cdif:index": 1,
              "cdif:format": "decimal",
              "cdif:physicalDataType": "float64",
              "cdi:nullSequence": "NA",
              "cdi:isRequired": true,
              "cdif:formats_InstanceVariable": {
                "@id": "ex:var-concentration"
              }
            },
            {
              "cdif:index": 2,
              "cdif:format": "decimal",
              "cdif:physicalDataType": "float64",
              "cdi:nullSequence": "NA",
              "cdi:isRequired": false,
              "cdif:formats_InstanceVariable": {
                "@id": "ex:var-uncertainty"
              }
            }
          ]
        },
        {
          "@type": [
            "schema:MediaObject",
            "cdi:StructuredDataSet"
          ],
          "@id": "#part-spectra-nc",
          "schema:name": "spectra-cube.nc",
          "schema:description": "Spectral data cube with wavelength and intensity dimensions.",
          "schema:encodingFormat": [
            "application/x-netcdf"
          ],
          "schema:size": {
            "@type": [
              "schema:QuantitativeValue"
            ],
            "schema:value": 13743003,
            "schema:unitText": "byte"
          },
          "cdif:hasPhysicalMapping": [
            {
              "cdif:format": "decimal",
              "cdif:physicalDataType": "float32",
              "cdi:locator": "/spectra/wavelength",
              "cdi:isRequired": true,
              "cdif:formats_InstanceVariable": {
                "@id": "ex:var-wavelength"
              }
            },
            {
              "cdif:format": "decimal",
              "cdif:physicalDataType": "float32",
              "cdi:locator": "/spectra/intensity",
              "cdi:isRequired": true,
              "cdif:formats_InstanceVariable": {
                "@id": "ex:var-intensity"
              }
            }
          ]
        },
        {
          "@type": [
            "schema:MediaObject"
          ],
          "@id": "#part-method-pdf",
          "schema:name": "analysis-method.pdf",
          "schema:description": "Method description document for the analysis.",
          "schema:encodingFormat": [
            "application/pdf"
          ],
          "schema:size": {
            "@type": [
              "schema:QuantitativeValue"
            ],
            "schema:value": 56062,
            "schema:unitText": "byte"
          }
        },
        {
          "@type": [
            "schema:MediaObject"
          ],
          "@id": "#part-metadata-yaml",
          "schema:name": "geochem-detailed-metadata.yaml",
          "schema:description": "Metadata sidecar for the results CSV file.",
          "schema:encodingFormat": [
            "application/yaml"
          ],
          "schema:size": {
            "@type": [
              "schema:QuantitativeValue"
            ],
            "schema:value": 2281,
            "schema:unitText": "byte"
          },
          "schema:about": [
            {
              "@id": "#part-results-csv"
            }
          ]
        }
      ],
      "dcterms:conformsTo": [
        {
          "@id": "http://www.opengis.net/def/nil/OGC/0/missing"
        }
      ]
    },
    {
      "@type": [
        "schema:WebAPI"
      ],
      "schema:serviceType": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "OGC API - Features",
        "schema:identifier": {
          "@type": [
            "schema:PropertyValue"
          ],
          "schema:propertyID": "https://www.ogc.org/standards",
          "schema:value": "ogcapi-features-1",
          "schema:url": "https://www.ogc.org/standard/ogcapi-features/"
        },
        "schema:inDefinedTermSet": "https://www.ogc.org/standards",
        "schema:termCode": "ogcapi-features"
      },
      "schema:termsOfService": "Open access, no authentication required",
      "schema:documentation": {
        "@type": [
          "schema:CreativeWork",
          "dcat:Relationship"
        ],
        "schema:name": "OpenAPI specification for geochemistry data service",
        "schema:url": "https://example.org/api/v1/openapi.json"
      },
      "schema:potentialAction": [
        {
          "@type": [
            "schema:Action"
          ],
          "schema:name": "Query geochemistry features",
          "schema:target": {
            "@type": [
              "schema:EntryPoint"
            ],
            "schema:description": "OGC API Features endpoint returning geochemistry observations as CSV",
            "schema:urlTemplate": "https://example.org/api/v1/collections/geochem/items?f={format}&limit={limit}&offset={offset}",
            "schema:httpMethod": [
              "GET"
            ],
            "schema:contentType": [
              "text/csv",
              "application/geo+json"
            ]
          },
          "schema:result": {
            "@type": [
              "schema:DataDownload"
            ],
            "schema:name": "Geochemistry query results",
            "schema:contentUrl": "https://example.org/api/v1/collections/geochem/items?f=csv",
            "schema:encodingFormat": [
              "text/csv"
            ],
            "cdi:isDelimited": true,
            "csvw:delimiter": ",",
            "csvw:header": true,
            "csvw:headerRowCount": 1,
            "cdif:hasPhysicalMapping": [
              {
                "cdif:index": 0,
                "cdif:format": "decimal",
                "cdif:physicalDataType": "float64",
                "cdi:isRequired": true,
                "cdif:formats_InstanceVariable": {
                  "@id": "ex:var-concentration"
                }
              },
              {
                "cdif:index": 1,
                "cdif:format": "decimal",
                "cdif:physicalDataType": "float64",
                "cdi:isRequired": false,
                "cdif:formats_InstanceVariable": {
                  "@id": "ex:var-uncertainty"
                }
              }
            ],
            "dcterms:conformsTo": [
              {
                "@id": "http://www.opengis.net/def/nil/OGC/0/missing"
              }
            ]
          },
          "schema:object": {
            "@type": [
              "schema:DataFeed"
            ],
            "schema:description": "Geochemistry observations collection"
          },
          "schema:query-input": [
            {
              "@type": [
                "schema:PropertyValueSpecification"
              ],
              "schema:valueName": "format",
              "schema:description": "Response format: csv or geojson",
              "schema:valueRequired": false,
              "schema:valuePattern": "csv|geojson"
            },
            {
              "@type": [
                "schema:PropertyValueSpecification"
              ],
              "schema:valueName": "limit",
              "schema:description": "Maximum number of features to return",
              "schema:valueRequired": false
            },
            {
              "@type": [
                "schema:PropertyValueSpecification"
              ],
              "schema:valueName": "offset",
              "schema:description": "Starting index for pagination",
              "schema:valueRequired": false
            }
          ]
        }
      ]
    }
  ],
  "schema:variableMeasured": [
    {
      "@type": [
        "schema:PropertyValue",
        "cdi:InstanceVariable"
      ],
      "@id": "ex:var-sampleID",
      "schema:name": "Sample identifier",
      "schema:description": "Unique identifier for each sample",
      "schema:propertyID": [
        "urn:example:property:sampleID"
      ],
      "cdif:physicalDataType": "string"
    },
    {
      "@type": [
        "schema:PropertyValue",
        "cdi:InstanceVariable"
      ],
      "@id": "ex:var-concentration",
      "schema:name": "Element concentration",
      "schema:alternateName": [
        "concentration_ppm",
        "element_conc"
      ],
      "schema:description": "Measured element concentration in parts per million",
      "schema:propertyID": [
        "urn:example:property:concentration"
      ],
      "schema:url": "https://example.org/docs/variables/concentration",
      "schema:measurementTechnique": "ICP-MS",
      "schema:unitText": "ppm",
      "schema:unitCode": "59",
      "schema:minValue": 0.01,
      "schema:maxValue": 5000,
      "cdif:physicalDataType": "float64"
    },
    {
      "@type": [
        "schema:PropertyValue",
        "cdi:InstanceVariable"
      ],
      "@id": "ex:var-uncertainty",
      "schema:name": "Measurement uncertainty",
      "schema:description": "2-sigma uncertainty on concentration measurement",
      "schema:propertyID": [
        "urn:example:property:uncertainty"
      ],
      "schema:unitText": "ppm",
      "schema:unitCode": "59",
      "cdif:physicalDataType": "float64"
    },
    {
      "@type": [
        "schema:PropertyValue",
        "cdi:InstanceVariable"
      ],
      "@id": "ex:var-wavelength",
      "schema:name": "Wavelength",
      "schema:description": "Spectral wavelength",
      "schema:propertyID": [
        "urn:example:property:wavelength"
      ],
      "schema:unitText": "nm",
      "schema:minValue": 200,
      "schema:maxValue": 2500,
      "cdif:physicalDataType": "float64"
    },
    {
      "@type": [
        "schema:PropertyValue",
        "cdi:InstanceVariable"
      ],
      "@id": "ex:var-intensity",
      "schema:name": "Spectral intensity",
      "schema:description": "Measured spectral intensity",
      "schema:propertyID": [
        "urn:example:property:intensity"
      ],
      "schema:unitText": "counts",
      "cdif:physicalDataType": "float32"
    }
  ],
  "prov:wasGeneratedBy": [
    {
      "@id": "ex:activity-geochem-analysis",
      "@type": [
        "schema:Action",
        "prov:Activity"
      ],
      "schema:name": "Soil Geochemistry Analysis - Great Basin Transect 2025",
      "schema:description": "Major and trace element analysis of soil samples from Great Basin transect sites using ICP-MS with EPA Method 6200 protocols.",
      "schema:identifier": {
        "@type": [
          "schema:PropertyValue"
        ],
        "schema:propertyID": "https://example.org/activities",
        "schema:value": "GEOCHEM-GB-2025-001",
        "schema:url": "https://example.org/activities/GEOCHEM-GB-2025-001"
      },
      "prov:used": [
        {
          "schema:instrument": {
            "@type": [
              "schema:Thing",
              "schema:DefinedTerm"
            ],
            "schema:name": "Inductively Coupled Plasma Mass Spectrometry",
            "schema:termCode": "ICP-MS",
            "schema:inDefinedTermSet": "https://vocab.nerc.ac.uk/collection/L05/current/",
            "schema:alternateName": "Thermo Fisher iCAP RQ ICP-MS",
            "schema:category": [
              {
                "@type": [
                  "schema:DefinedTerm"
                ],
                "schema:name": "Inductively coupled plasma mass spectrometer",
                "schema:termCode": "LAB21",
                "schema:inDefinedTermSet": "https://vocab.nerc.ac.uk/collection/L05/current/"
              }
            ],
            "schema:additionalProperty": [
              {
                "@type": [
                  "schema:PropertyValue"
                ],
                "schema:propertyID": [
                  "detectionLimit"
                ],
                "schema:name": "Typical Detection Limit",
                "schema:value": "0.01 mg/kg for trace elements"
              }
            ],
            "schema:hasPart": [
              {
                "@type": [
                  "schema:Thing"
                ],
                "schema:name": "Autosampler",
                "schema:alternateName": "CETAC ASX-560"
              },
              {
                "@type": [
                  "schema:Thing"
                ],
                "schema:name": "Spray chamber",
                "schema:alternateName": "Peltier-cooled cyclonic"
              }
            ]
          }
        },
        "https://vocab.nerc.ac.uk/collection/L05/current/LAB02",
        "Soil core samples collected June 2025, sites GB-001 through GB-045, dried and sieved to <2 mm fraction",
        {
          "@type": [
            "schema:CreativeWork",
            "dcat:Relationship"
          ],
          "schema:name": "EPA Method 6200 - XRF Analysis of Soils",
          "schema:url": "https://www.epa.gov/hw-sw846/sw-846-test-method-6200-field-portable-x-ray-fluorescence-spectrometry-determination"
        }
      ],
      "schema:agent": {
        "@id": "https://orcid.org/0000-0001-2345-6789"
      },
      "schema:participant": [
        {
          "@type": [
            "schema:Role"
          ],
          "schema:roleName": "Lab Technician",
          "schema:contributor": {
            "@id": "https://orcid.org/0000-0003-5555-7777"
          }
        }
      ],
      "schema:object": "Dried and sieved soil samples (<2 mm fraction) from Great Basin transect",
      "schema:result": {
        "@id": "ex:complete-dataset-001"
      },
      "schema:actionStatus": "schema:CompletedActionStatus",
      "schema:startTime": "2025-07-15T08:00:00Z",
      "schema:endTime": "2025-09-30T17:00:00Z",
      "schema:location": {
        "@type": [
          "schema:Place"
        ],
        "schema:name": "Nevada Bureau of Mines and Geology Analytical Lab",
        "schema:address": "University of Nevada, Reno, 1664 N. Virginia Street, Reno, NV 89557",
        "schema:url": "https://www.unr.edu/nbmg"
      },
      "schema:actionProcess": {
        "@type": [
          "schema:HowTo"
        ],
        "schema:name": "EPA 6200 / ICP-MS Soil Geochemistry Protocol",
        "schema:description": "Combined XRF screening and ICP-MS confirmatory analysis for major and trace elements in soils.",
        "schema:step": [
          {
            "@type": [
              "schema:HowToStep"
            ],
            "schema:name": "Sample preparation and acid digestion",
            "schema:description": "Homogenize dried samples, split 0.5 g aliquots, digest with HNO3-HCl-HF mixture at 190 C for 20 min in a microwave system.",
            "schema:url": "https://example.org/protocols/digestion-procedure",
            "schema:position": 1
          },
          {
            "@type": [
              "schema:HowToStep"
            ],
            "schema:name": "ICP-MS measurement and calibration",
            "schema:description": "Analyze digested solutions by ICP-MS using external calibration with NIST SRM 2711a (Montana II Soil).",
            "schema:url": "https://example.org/protocols/icpms-measurement",
            "schema:position": 2
          }
        ]
      },
      "schema:error": "",
      "schema:additionalProperty": [
        {
          "@type": [
            "schema:PropertyValue"
          ],
          "schema:propertyID": [
            "batchID"
          ],
          "schema:name": "Analysis Batch Identifier",
          "schema:value": "GB-2025-BATCH-03"
        }
      ]
    }
  ],
  "prov:wasDerivedFrom": [
    {
      "@id": "https://example.org/fieldwork/gb-transect-2025/raw-samples"
    },
    {
      "@id": "https://doi.org/10.5880/example.field.001"
    },
    {
      "@type": [
        "schema:CreativeWork",
        "dcat:Relationship"
      ],
      "schema:name": "USGS Great Basin Geochemical Survey (2020)",
      "schema:description": "Prior regional geochemical survey used for site selection and comparative analysis",
      "schema:url": "https://pubs.usgs.gov/of/2020/example-great-basin"
    }
  ],
  "dqv:hasQualityMeasurement": [
    {
      "@type": [
        "dqv:QualityMeasurement"
      ],
      "dqv:isMeasurementOf": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "Completeness",
        "schema:inDefinedTermSet": "https://www.w3.org/TR/vocab-dqv/",
        "schema:termCode": "completeness"
      },
      "dqv:value": "98.5% of planned sample sites successfully analyzed"
    },
    {
      "@type": [
        "dqv:QualityMeasurement"
      ],
      "dqv:isMeasurementOf": "Analytical precision (2-sigma RSD on NIST SRM 2711a replicates)",
      "dqv:value": {
        "@type": [
          "schema:DefinedTerm"
        ],
        "schema:name": "High-",
        "schema:inDefinedTermSet": "https://example.org/quality-levels/",
        "schema:termCode": "HIGH"
      }
    }
  ],
  "schema:subjectOf": {
    "@type": [
      "schema:Dataset"
    ],
    "schema:additionalType": [
      "dcat:CatalogRecord"
    ],
    "@id": "ex:metadata-record-001",
    "schema:about": {
      "@id": "ex:complete-dataset-001"
    },
    "dcterms:conformsTo": [
      {
        "@id": "https://w3id.org/cdif/bbr/metadata/profiles/cdifCompositeProfile/cdifComplete"
      },
      {
        "@id": "https://w3id.org/cdif/core/1.1"
      },
      {
        "@id": "https://w3id.org/cdif/discovery/1.1"
      },
      {
        "@id": "https://w3id.org/cdif/data_description/1.1"
      },
      {
        "@id": "https://w3id.org/cdif/manifest/1.1"
      },
      {
        "@id": "https://w3id.org/cdif/provenance/1.1"
      },
      {
        "@id": "https://w3id.org/cdif/data_structure/1.1"
      }
    ],
    "schema:maintainer": {
      "@id": "https://orcid.org/0000-0001-2345-6789",
      "@type": [
        "schema:Person"
      ],
      "schema:name": "Smith, Jane"
    },
    "schema:sdDatePublished": "2026-02-19",
    "schema:includedInDataCatalog": {
      "@id": "ex:ieda-catalog",
      "@type": [
        "schema:DataCatalog"
      ],
      "schema:name": "IEDA Data Catalog",
      "schema:url": "https://www.earthchem.org/"
    }
  }
}