OF-97-07 Stratigraphic and Structural Cross Sections of the Coal-Bearing Williams Fork Formation, Mesaverde Group, Colorado Download Publication Details Includes two plates. Plate 1: Genetic-stratigraphic cross section of the coal-bearing Williams Fork Formation, Piceance and Sand Wash Basins, Colorado. Plate 2: Cross section indicating missing and duplicated strata due to faulting (9S-91W through 9S-89W) Piceance Basin Colorado. Uses genetic stratigraphy to correlate Williams Fork coal zones between Sand Wash and Piceance Basins. Cross sections delineate major depositional systems and show rationale for coalbed methane target generation and resource estimates. 2 plates. Digital PDF download. OF-97-07D Citations McMurry, Ronald G., and Roger Tyler. “OF-97-07 Genetic-Stratigraphic Cross Section of the Coal-Bearing Williams Fork Formation.” Coal. Open File Report. Denver, CO: Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources, 1997. https://doi.org/10.58783/cgs.of9707.eyyv2507. CGS Publications. https://coloradogeologicalsurvey.org/publications/stratigraphic-structural-cross-sections-coal-williams-fork-formation-mesaverde-colorado/.