TY - RPRT TI - Preliminary results of mineralogic and diagenetic studies of low-permeability sandstones of Late Cretaceous age, Piceance Creek basin, northwestern Colorado AU - Paula L. Hansley AU - Ronald C. Johnson PY - 1979 DO - 10.3133/ofr791702 UR - https://pubs.usgs.gov/publication/ofr791702 ID - ofr791702 ER -