@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/15ae9cc0-d3da-4487-abd7-efd2c9edf46e> a dcat:Dataset ;
    dct:description """This data set contains U-Pb isotopic data and associated ages of
titanite from one sample and detrital zircon grains from 33
sedimentary and metasedimentary rocks collected from the western
Alaska Range in south-central Alaska. The samples were collected as
part of geological mapping and research conducted between 2010 and
2014 and funded by the Mineral Resources Program of the U.S.
Geological Survey. Titanite was separated by Apatite to Zircon,
Inc. (A2Z) and analyzed by USGS research staff at the
Stanford-US Geological Survey (USGS) Sensitive High Resolution Ion
Microprobe with Reverse-Geometry (SHRIMP-RG) at Stanford University.
Detrital zircon grains from each of the 33 samples were separated
and analyzed by Apatite to Zircon, Inc. (A2Z) and GeoSep Services (GSS)
laboratories between 2011 and 2014, using
laser-ablation-inductively-coupled-plasma-mass spectrometry (LA-ICP-MS)
techniques described in the supplemental file. The data tables report
the concentration of the radioactive elements uranium (U) and
thorium (Th) measured in each grain, corrected ratios of two
isotopes of lead (207Pb and 206Pb) to two isotopes of uranium (235U and
238U), and the geologic age of each grain calculated from the
isotopic ratios. The titanite data table also reports concentrations
of selected trace elements measured in each grain.""" ;
    dct:identifier "USGS:ASC272" ;
    dct:issued "2025-11-20T03:43:20.230401"^^xsd:dateTime ;
    dct:modified "20201125"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-154.3600 61.2800, -154.3600 62.5700, -151.4500 62.5700, -151.4500 61.2800, -154.3600 61.2800))"^^gsp:wktLiteral ] ;
    dct:title """U-Pb Isotopic Data and Ages of Titanite and Detrital Zircon from
Selected Rocks from the Western Alaska Range, Alaska""" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "James V. Jones" ;
            vcard:hasEmail <mailto:ascweb@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/15ae9cc0-d3da-4487-abd7-efd2c9edf46e/resource/8b0d7bca-6479-491f-b959-a4e743d716d5>,
        <https://data.amerigeoss.org/dataset/15ae9cc0-d3da-4487-abd7-efd2c9edf46e/resource/94b67213-517e-4244-a311-02ee2fc75ba3> ;
    dcat:keyword "alaska",
        "alaska-range",
        "amerigeo",
        "amerigeoss",
        "ckan",
        "detrital-zircon",
        "earth-science",
        "geo",
        "geochronology",
        "geology",
        "geoscientificinformation",
        "geoss",
        "igneous-rocks",
        "national",
        "north-america",
        "sedimentary-rocks",
        "titanite",
        "u-pb",
        "united-states",
        "uranium-lead-analysis",
        "usgs-asc272" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/15ae9cc0-d3da-4487-abd7-efd2c9edf46e/resource/8b0d7bca-6479-491f-b959-a4e743d716d5> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:24:41.223115"^^xsd:dateTime ;
    dct:modified "2025-11-20T03:43:20.219390"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9JV5LM9> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/15ae9cc0-d3da-4487-abd7-efd2c9edf46e/resource/94b67213-517e-4244-a311-02ee2fc75ba3> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-07-28T20:24:41.223109"^^xsd:dateTime ;
    dct:modified "2025-11-20T03:43:20.218980"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.ASC272.xml> ;
    dcat:mediaType "text/xml" .

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