TY - RPRT TI - New interpretations of the stratigraphy and sedimentology of uppermost Jurassic to lowermost Upper Cretaceous strata in the San Juan Basin of northwestern New Mexico. X-ray diffraction studies of the <2-mu m fraction from the upper part of the Brushy Basin Member of the Upper Jurassic Morrison Formation and the Lower Cretaceous Burro Canyon Formation in the Four Corners area, Colorado AU - William M. Aubrey AU - Gary L. Skipp PY - 1992 DO - 10.3133/b1808jk UR - https://pubs.usgs.gov/publication/b1808JK ID - b1808JK ER -