{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Cal Ruleman", "hasEmail": "mailto:cruleman@usgs.gov"}, "description": "The Leadville North 7.5' quadrangle lies at the northern end\nof the Upper Arkansas Valley, where the Continental Divide at\nTennessee Pass creates a low drainage divide between the\nColorado and Arkansas River watersheds. In the eastern half\nof the quadrangle, the Paleozoic sedimentary section dips\ngenerally 20\u201330 degrees east. At Tennessee Pass and Missouri\nHill, the core of the Sawatch anticlinorium is mapped as\ndisplaying a tight hanging-wall syncline and foot-wall\nanticline within the basement-cored structure. High-angle,\nwest-dipping, Neogene normal faults cut the eastern margin\nof the broad, Sawatch anticlinorium. Minor displacements along\nhigh-angle, east- and west-dipping Laramide reverse faults\noccurred in the core of the north-plunging anticlinorium\nalong the western and eastern flanks of Missouri Hill. Within\nthe western half of the quadrangle, Meso- and Paleoproterozoic\nmetamorphic and igneous rocks are uplifted along the generally\neast-dipping, high-angle Sawatch fault system and are overlain\nby at least three generations of glacial deposits in the\nwestern part of the quadrangle. 10Be and 26Al cosmogenic nuclide\nages of the youngest glacial deposits indicate a last glacial\nmaximum age of about 21\u201322 kilo-annum and complete deglaciation\nby about 14 kilo-annum, supported by chronologic studies in\nadjacent drainages. No late Pleistocene tectonic activity is\napparent within the quadrangle.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "http://dx.doi.org/10.5066/F7DR2TRG", "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.5a81dc10e4b00f54eb30eb33.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5a81dc10e4b00f54eb30eb33", "keyword": ["10Be, 26Al", "Belden Formation", "Buckeye Peak", "Bull Lake age", "Bull Lake glaciation", "Cambrian", "Camp Hale", "Chaffee Group", "Chicago Ridge", "Colorado", "Colorado River", "Cooper Hill", "Cretaceous", "Devonian", "Dotsero Formation", "Eagle County", "Eagle River", "East Fork Arkansas River", "Eocene", "Gray porphyry group", "Holocene", "Hornblende Latite Porphyry", "Lake County", "Laramide", "Leadville", "Leadville Limestone", "Leadville Quadrangle", "Lincoln Porphyry", "Manitou Dolomite", "Mesoproterozoic", "Minturn Formation", "Miocene", "Mississippian", "Missouri Hill", "Mosquito Range", "Mount Zion", "No Name Gulch", "Oligocene", "Ordovician", "Paleocene", "Paleoproterozoic", "Pennsylvanian", "Pinedale Glaciation", "Pinedale age", "Pleistocene", "Pliocene", "Proterozoic", "Quaternary", "Rio Grande rift", "Sawatch Quartzite", "Sawatch Range", "Sawatch anticlinorium", "South Park", "St. Kevin Granite", "Tennessee Creek", "Tennessee Park", "Tennessee Pass", "Tertiary", "Turquoise Lake", "USA", "USGS:5a81dc10e4b00f54eb30eb33", "United States", "Upper Arkansas River", "Upper Arkansas Valley", "White Porphyry Group", "cosmogenic nuclide", "neotectonics", "pre-Bull Lake age", "pre-Bull Lake glaciation"], "modified": "2022-08-29T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-106.37500, 39.250000, -106.25000, 39.375000", "theme": ["geospatial"], "title": "Data release for Geologic Map of the Leadville North 7.5' quadrangle, Eagle and Lake Counties, Colorado"}