Item talk:Q68880
From geokb
{
"USGS Publications Warehouse": { "schema": { "@context": "https://schema.org", "@type": "CreativeWork", "additionalType": "USGS Numbered Series", "name": "Argon geochronology of late Pleistocene to Holocene Westdahl volcano, Unimak Island, Alaska", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "pp1709D", "url": "https://pubs.usgs.gov/publication/pp1709D" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 72826 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3133/pp1709D", "url": "https://doi.org/10.3133/pp1709D" } ], "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Professional Paper" } ], "datePublished": "2005", "dateModified": "2019-05-01", "abstract": "High-precision 40Ar/39Ar geochronology of selected lavas from Westdahl Volcano places time constraints on several key prehistoric eruptive phases of this large active volcano. A dike cutting old pyroclastic-flow and associated lahar deposits from a precursor volcano yields an age of 1,654+/-11 k.y., dating this precursor volcano as older than early Pleistocene. A total of 11 geographically distributed lavas with ages ranging from 47+/-14 to 127+/-2 k.y. date construction of the Westdahl volcanic center. Lava flows cut by an apparent caldera-rim structure yielded ages of 81+/-5 and 121+/-8 k.y., placing a maximum date of 81 ka on caldera formation. Late Pleistocene and Holocene lavas fill the caldera, but most of them are obscured by the large summit icecap.", "description": "16 p.", "publisher": { "@type": "Organization", "name": "U.S. Geological Survey" }, "author": [ { "@type": "Person", "name": "Moore, Richard B. rmoore@usgs.gov", "givenName": "Richard B.", "familyName": "Moore", "email": "rmoore@usgs.gov", "affiliation": [ { "@type": "Organization", "name": "NH/VT office of New England Water Science Center", "url": "https://www.usgs.gov/centers/new-england-water-science-center" } ] }, { "@type": "Person", "name": "McGimsey, Robert G. mcgimsey@usgs.gov", "givenName": "Robert G.", "familyName": "McGimsey", "email": "mcgimsey@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-5379-7779", "url": "https://orcid.org/0000-0001-5379-7779" }, "affiliation": [ { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ] }, { "@type": "Person", "name": "Calvert, Andrew T. acalvert@usgs.gov", "givenName": "Andrew T.", "familyName": "Calvert", "email": "acalvert@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-5237-2218", "url": "https://orcid.org/0000-0001-5237-2218" }, "affiliation": [ { "@type": "Organization", "name": "Geology, Minerals, Energy, and Geophysics Science Center", "url": "https://www.usgs.gov/centers/gmeg" }, { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ] } ], "funder": [ { "@type": "Organization", "name": "Volcano Hazards Program", "url": "https://www.usgs.gov/programs/VHP" } ], "spatialCoverage": [ { "@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/4074035" }, { "@type": "Place", "additionalType": "state", "name": "Alaska" }, { "@type": "Place", "additionalType": "unknown", "name": "Westdahl Volcano" }, { "@type": "Place", "geo": [ { "@type": "GeoShape", "additionalProperty": { "@type": "PropertyValue", "name": "GeoJSON", "value": { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": {}, "geometry": { "type": "Polygon", "coordinates": [ [ [ -164.87045288085938, 54.438102809740165 ], [ -164.41589355468747, 54.438102809740165 ], [ -164.41589355468747, 54.59832341427045 ], [ -164.87045288085938, 54.59832341427045 ], [ -164.87045288085938, 54.438102809740165 ] ] ] } } ] } } }, { "@type": "GeoCoordinates", "latitude": 54.518213112005306, "longitude": -164.64317321777344 } ] } ] } }
}