Geologic framework of nonmarine cretaceous-tertiary boundary sites, raton basin, new mexico and colorado
January 1, 1984
Indium concentrations are anomalously high at the palynological Cretaceous-Tertiary boundary in fluvial sedimentary rocks of the lower part of the Raton Formation at several localities in the Raton Basin of New Mexico and Colorado. The iridium anomaly is associated with a thin bed of kaolinitic claystone in a discontinuous carbonaceous shale and coal sequence.
Citation Information
| Publication Year | 1984 |
|---|---|
| Title | Geologic framework of nonmarine cretaceous-tertiary boundary sites, raton basin, new mexico and colorado |
| Authors | C. L. Pillmore, R.H. Tschudy, C. J. Orth, J. S. Gilmore, J.D. Knight |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Science |
| Index ID | 70013585 |
| Record Source | USGS Publications Warehouse |