The purpose of this publication is to provide graphic representation of the stratigraphic and structural relationships of the strata that comprise the bedrock aquifers in the Denver Basin. Fifteen cross-sections in this publication depict stratigraphic and structural relationships of the Upper Cretaceous through Paleogene sediments that comprise the Denver Basin Bedrock aquifers. The work represents integration of subsurface data from 737 boreholes with surface geologic mapping to provide a regional three-dimensional view of the water-bearing strata. Preparation utilized computer-based technology using data from a broad array of sources including recent borehole geophysical logs. Graphic presentations include compilations on a basin-wide scale that illustrate how rapidly stratigraphic characteristics can change both laterally with distance and vertically with depth. Detailed cross-sections are also included to illustrate characteristics on a more local scale. OF-11-03
Staff geologist Peter Barkmann completed the construction of the cross-sections between 2008 and 2010 with the assistance of Marieke Dechesne, Mary Ellen Wickham, Jill Carlson, Scott Formolo, and Erik Oerter. The project was funded jointly by the Colorado Water Conservation Board (CWCB) and the Colorado Geological Survey (CGS). Matching funds were drawn from the Colorado Department of Natural Resources Severance Tax Operational Funds, which are obtained from the Severance Tax paid on the production of natural gas, oil, coal, and metals in Colorado.