{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Carol J. Becker", "hasEmail": "mailto:cjbecker@usgs.gov"}, "description": "This data set consists of digital aquifer boundaries for the\nTillman terrace and alluvial aquifer in southwestern Oklahoma.\nThe Tillman terrace aquifer encompasses the unconsolidated\nterrace deposits and alluvium associated with the North Fork of\nthe Red River and the Red River in the western half of Tillman\nCounty. These sediments consist of discontinuous layers of clay,\nsandy clay, sand, and gravel. The aquifer extends over an area\nof 285 square miles and is used for irrigation and domestic\npurposes. Granite and the Hennessey Formation outcrop in\nnorthern parts of the aquifer where alluvial deposits are\nabsent. These outcrops were included as part of the aquifer in a\nthesis that modeled the ground-water flow in the aquifer.\n\t\t\nMost of the aquifer boundary polygons were extracted from a\npublished digital surficial geology data set based on a scale of\n1:250,000. One of the lines in the aquifer boundary data set was\ndigitized from a figure in a thesis in which ground-water\nflow was modeled for the Tillman terrace and alluvial aquifer.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9N4CCRL", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.9075f6a8-927e-4d89-9345-f5f623deb7cf.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_9075f6a8-927e-4d89-9345-f5f623deb7cf", "keyword": ["Tillman alluvial and terrace aquifer", "Tillman alluvial aquifer", "Tillman aquifer", "Tillman terrace and alluvial aquifer", "Tillman terrace aquifer", "USGS:9075f6a8-927e-4d89-9345-f5f623deb7cf", "alluvial and terrace aquifer", "alluvial aquifer", "alluvial deposit", "aquifer boundary", "aquifers", "environment", "geoscientificInformation", "ground water", "ground-water vulnerability", "groundwater", "groundwater vulnerability", "inlandWaters", "terrace and alluvial aquifer", "terrace aquifer", "terrace deposit"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-99.2274, 34.1691, -98.9262, 34.6426", "theme": ["geospatial"], "title": "Digital data sets that describe aquifer characteristics of the Tillman terrace and alluvial aquifer in southwestern Oklahoma"}