@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/51a9f9ef-b293-44ba-ac4c-475a5b730191> a dcat:Dataset ;
    dct:description """The wntop_f grid represents the modeled elevation of the top of the Wanapum Basalt geomodel unit 
at a 500 foot resolution. It is one grid of a geomodel that consists of eleven grids and a spatial extent 
polygon shapefile.  As part of a U.S. Geological Survey Groundwater Resources Program study, a 
three-dimensional geomodel was constructed for approximately 53,000 mi2 of the Columbia Plateau 
in Washington, Oregon, and Idaho. This geomodel was constructed to define the general aquifer 
system geometry for use in a regional numerical groundwater flow model. Simplifications and 
assumptions consistent with this ultimate goal and the uncertainty in the available data were made. 
The geomodel units consist of Miocene age Columbia River Basalt Group strata and younger alluvial 
overburden covering approximately 44,000 mi2. Data were compiled from numerous databases and 
detailed studies completed during the past three decades. These data include stratigraphic 
interpretations made on more than 13,000 wells and a contiguous compilation of surficial geology 
and structural features spanning the study area. These data were simplified and used to construct 
piecewise-smooth trend surfaces that represent upper and lower subsurface geomodel unit boundaries 
in this complex folded and faulted terrain.  The smoothness of the surfaces implicitly represents 
uncertainty in prediction of each surface resulting from data gaps, errors in borehole interpretations, 
errors in mapped contact locations, and uncertainty in the shape of the paleo-surface upon which 
flood basalts were emplaced. Using a rule-based algorithm, surfaces were then recombined to 
construct a fully three-dimensional model with a 500-foot grid resolution that is consistent with the 
data and for which error estimates may be made. The modeling process yielded improved estimates 
of unit volumes, refinement of location of large structural features, and identification of features that 
may be important for ongoing groundwater studies.""" ;
    dct:identifier "USGS:5c2e8f88-cc6d-45d8-b360-1eafea8901fc" ;
    dct:issued "2025-11-21T16:38:23.753718"^^xsd:dateTime ;
    dct:modified "20201117"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-121.8450 44.2611, -121.8450 48.4194, -115.3674 48.4194, -115.3674 44.2611, -121.8450 44.2611))"^^gsp:wktLiteral ] ;
    dct:title "Modeled Top of the Wanapum Basalt Geomodel Unit (wntop_f)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Erick Burns" ;
            vcard:hasEmail <mailto:eburns@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/51a9f9ef-b293-44ba-ac4c-475a5b730191/resource/48fcde09-2e4b-4c21-b556-a8dcfe9c732a>,
        <https://data.amerigeoss.org/dataset/51a9f9ef-b293-44ba-ac4c-475a5b730191/resource/6f0e4210-361f-4e17-9435-3d2f35b6e331> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "columbia-plateau",
        "columbia-plateau-regional-aquifer-system",
        "columbia-river-basalt",
        "columbia-river-basin",
        "cpras",
        "geo",
        "geomodel",
        "geoss",
        "idaho",
        "inlandwaters",
        "national",
        "north-america",
        "oregon",
        "pacific-northwest",
        "united-states",
        "usgs-5c2e8f88-cc6d-45d8-b360-1eafea8901fc",
        "wanapum-basalt",
        "washington" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/51a9f9ef-b293-44ba-ac4c-475a5b730191/resource/48fcde09-2e4b-4c21-b556-a8dcfe9c732a> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T21:06:42.418749"^^xsd:dateTime ;
    dct:modified "2025-11-21T16:38:23.742208"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://water.usgs.gov/lookup/getspatial?sir2010-5246_wntop_f> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/51a9f9ef-b293-44ba-ac4c-475a5b730191/resource/6f0e4210-361f-4e17-9435-3d2f35b6e331> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T21:06:42.418742"^^xsd:dateTime ;
    dct:modified "2025-11-21T16:38:23.741732"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5c2e8f88-cc6d-45d8-b360-1eafea8901fc.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .