Parent Layer: CGS Denver Basin Bedrock Map

Name: Denver Basin D1 Top Outcroptrace

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Description: This publication presents a new digital bedrock geologic map of the Upper Cretaceous to Paleogene sedimentary rocks of the Denver Basin. Outcrop traces on the bedrock geologic map represent intersections of structure maps with a ten-meter resolution digital terrain model of bedrock topography. The terrain model of bedrock topography removes thick deposits of Quaternary alluvium in order to provide accurate subcrop patterns where younger deposits conceal bedrock. In addition to the geologic map, this publication includes five structure maps made on selected stratigraphic horizons, and four isopach maps covering selected stratigraphic intervals. Three cross-sections illustrating basin geometry and depositional patterns complement the maps. In addition, three paleogeographic maps portray regional depositional patterns at selected time intervals. See the accompanying report for full information. The feature classes listed below are included in the geodatabases. BedrockGeology: Bedrock geologic units of the Denver Basin CastlePinesCore: Location of the Castle Pines Core Dawson_contacts_Thorson: Geologic contacts from Dawson Compilation (J.P. Thorson, in preparation) DigitizedContacts_metadata: Original Geologic contacts used as modeling input with reference to original map (not all were used) Faults_Tweto1979_Boulder_Weld: Faults from Tweto (1979) for the Boulder-Weld Fault zone only KiowaCore: Location of the Kiowa Core KT_localities: K-T Boundary Location (DMNS) KT_localitiesAnno: Annotation layer for the K-T Boundary Locations (DMNS) KT_outcroptrace: Modeled K-T Boundary outcrop trace MzPz_undiff: Undifferentiated MzPz (Table X for units) PierreShaleBackground: Background Polygon for the Pierre Shale ShoshoniteFlows: Table Mountain - Shoshonite- Lava Flows (Kellog, 2008) TertiaryUndiff_contacts: Contacts for Undifferentiated Upper Paleogene Rocks (Larkspur Conglomerate, Wall Mountain Tuff, Castle Rock Conglomerate, Ogallala Formation) TertiaryUndiff_polygons: Contacts for Undifferentiated Upper Paleogene Rocks (Larkspur Conglomerate, Wall Mountain Tuff, Castle Rock Conglomerate, Ogallala Formation)

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