@misc{indiciaec79738ec82b7, title = {Mineral, chemical and textural relationships in rhythmic-bedded, hydrocarbon-productive chalk of the Niobrara Formation, Denver Basin, Colorado ( USA).}, author = {R. M. Pollastro and C.J. Martinez}, year = {1985}, url = {https://pubs.usgs.gov/publication/70013414}, note = {Source identifier: 70013414} }