TY - RPRT TI - Intertonguing of the lower part of the Uinta Formation with the upper part of the Green River Formation in the Piceance Creek Basin during the late stages of Lake Uinta AU - John R. Donnell PY - 2009 DO - 10.3133/sir20085237 UR - https://pubs.usgs.gov/publication/sir20085237 ID - sir20085237 ER -