| Abstract: | An iridium abundance anomaly, with concentrations up to 5000 parts per trillion over a background level of 4 to 20 parts per trillion, has been located in sedimentary rocks laid down under freshwater swamp conditions in the Raton Basin of northeastern New Mexico. The anomaly occurs at the base of a coal bed, at the same stratigraphic position at which several well-known species of Cretaceous-age pollen became extinct. Copyright ?? 1981 AAAS. |
| Genre: | Article |
| ProdID: | 70011769 |
| Citation Author: | Orth, C. J.; Gilmore, J. S.; Knight, J. D.; Pillmore, C. L.; Tschudy, R. H.; Fassett, J. E. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 1343 |
| Citation Issue: | 4527 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Science |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 3 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | An iridium abundance anomaly at the palynological Cretaceous-Tertiary boundary in northern New Mexico; 1981; Article; Journal; Science; Orth, C. J.; Gilmore, J. S.; Knight, J. D.; Pillmore, C. L.; Tschudy, R. H.; Fassett, J. E. |
| Citation Start Page: | 1341 |
| Citation Volume: | 214 |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | An iridium abundance anomaly at the palynological Cretaceous-Tertiary boundary in northern New Mexico; 1981; Article; Journal; Science; Orth, C. J.; Gilmore, J. S.; Knight, J. D.; Pillmore, C. L.; Tschudy, R. H.; Fassett, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1981 00:00 -0600 |
| Publisher: | |
