1. The Middle Jurassic Summerville Formation, northern New Mexico;Anderson;N. M. Geol.,1992
2. Remanent magnetization of a 50 m core from the Moenkopi Formation;Baag;J. Geophys. Res.,1974
3. Permian System of the Colorado Plateau;Baars;AAPG Bull.,1962
4. Baars , D. L. The Elephant Canyon Formation revisited, Four Corners Geol. Soc. Guideb., 10th Annual Field Conference 81 90 Four Corners Geol. Soc. Durango, Colo. 1987
5. Paleomagnetism of the Chinle and Kayenta formations, New Mexico and Arizona;Bazard;J. Geophys. Res.,1991