@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/65e51992-1327-4e0a-8c23-bca8018d21f6> a dcat:Dataset ;
    dct:description """The smtop_f grid represents the modeled elevation of the top of the Saddle Mountains Basalt 
geomodlel 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:a3a55e70-df03-4006-985e-3a146a1dc141" ;
    dct:issued "2025-11-22T07:38:44.559820"^^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 Saddle Mountains Basalt Geomodel Unit (smtop_f)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Erick Burns" ;
            vcard:hasEmail <mailto:eburns@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/65e51992-1327-4e0a-8c23-bca8018d21f6/resource/580f73f7-dd97-40ca-b817-ff1d782eef68>,
        <https://data.amerigeoss.org/dataset/65e51992-1327-4e0a-8c23-bca8018d21f6/resource/a72047c2-3974-42ee-8c37-4e56b253c211> ;
    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",
        "saddle-mountains-basalt",
        "united-states",
        "usgs-a3a55e70-df03-4006-985e-3a146a1dc141",
        "washington" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/65e51992-1327-4e0a-8c23-bca8018d21f6/resource/580f73f7-dd97-40ca-b817-ff1d782eef68> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T14:42:41.521380"^^xsd:dateTime ;
    dct:modified "2025-11-22T07:38:44.548196"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://water.usgs.gov/lookup/getspatial?sir2010-5246_smtop_f> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/65e51992-1327-4e0a-8c23-bca8018d21f6/resource/a72047c2-3974-42ee-8c37-4e56b253c211> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-07T14:42:41.521369"^^xsd:dateTime ;
    dct:modified "2025-11-22T07:38:44.547754"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.a3a55e70-df03-4006-985e-3a146a1dc141.xml> ;
    dcat:mediaType "text/xml" .

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