@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/7b0af651-9a0b-447a-a809-e001592601b9> a dcat:Dataset ;
    dct:description """The pmtop_f grid represents the modeled elevation of the top of the Older Bedrock 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:01505df1-a2a6-48ab-9b16-77616fcfdc2b" ;
    dct:issued "2025-11-22T21:08:53.519811"^^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 Older Bedrock Geomodel Unit (pmtop_f)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Erick Burns" ;
            vcard:hasEmail <mailto:eburns@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/7b0af651-9a0b-447a-a809-e001592601b9/resource/049be5f6-bbde-4594-ab19-ac07e9481ad5>,
        <https://data.amerigeoss.org/dataset/7b0af651-9a0b-447a-a809-e001592601b9/resource/3a6a8dc5-feb7-4a29-b184-5e5fb849c9b3> ;
    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",
        "older-bedrock",
        "oregon",
        "pacific-northwest",
        "united-states",
        "usgs-01505df1-a2a6-48ab-9b16-77616fcfdc2b",
        "washington" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/7b0af651-9a0b-447a-a809-e001592601b9/resource/049be5f6-bbde-4594-ab19-ac07e9481ad5> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T16:02:43.280529"^^xsd:dateTime ;
    dct:modified "2025-11-22T21:08:53.507476"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.01505df1-a2a6-48ab-9b16-77616fcfdc2b.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/dataset/7b0af651-9a0b-447a-a809-e001592601b9/resource/3a6a8dc5-feb7-4a29-b184-5e5fb849c9b3> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T16:02:43.280539"^^xsd:dateTime ;
    dct:modified "2025-11-22T21:08:53.508050"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://water.usgs.gov/lookup/getspatial?sir2010-5246_pmtop_f> ;
    dcat:mediaType "application/http" .

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