Field guide and discussions of coal deposits, depositional environments, and the Cretaceous-Tertiary boundary, Southern Raton Basin: Field Trip 3.
Reference:
Pillmore,C.L. et al. (1984)
Field guide and discussions of coal deposits, depositional environments, and the Cretaceous-Tertiary boundary, Southern Raton Basin: Field Trip 3. Geological Society of America, Western Geological Excursions,1984 Annual Meeting
Vol. 3 P. 1- 51