| _version_ | 1867171366494535680 |
|---|---|
| author | Michel, Helen V Asaro, Frank Alvarez, Walter Alvarez, Luis W |
| author_facet | Michel, Helen V Asaro, Frank Alvarez, Walter Alvarez, Luis W |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Very significant enhancements of the element iridium have been observed in association with the Cretaceous/ Tertiary boundary in marine sediments laid down 65 m.y. ago and subsequently uplifted above the ocean's surface. If our hypothesis for the origin of the iridium and the cause of the Cretaceous/Tertiary life extinctions (the asteroid-impact theory) (Alvarez et al., 1980) is correct, the Ir anomaly should be associated with the Cretaceous/ Tertiary boundary region wherever it is intact. The present work was undertaken to search for the Ir anomaly in a deep-sea-drilling core, in order to check this aspect of the asteroid-impact theory. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_819742 |
| institution | PANGAEA |
| language | en |
| publishDate | 1981 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemisty at DSDP Hole 62-465A Michel, Helen V Asaro, Frank Alvarez, Walter Alvarez, Luis W 62-465A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg62; North Pacific/CONT RISE Very significant enhancements of the element iridium have been observed in association with the Cretaceous/ Tertiary boundary in marine sediments laid down 65 m.y. ago and subsequently uplifted above the ocean's surface. If our hypothesis for the origin of the iridium and the cause of the Cretaceous/Tertiary life extinctions (the asteroid-impact theory) (Alvarez et al., 1980) is correct, the Ir anomaly should be associated with the Cretaceous/ Tertiary boundary region wherever it is intact. The present work was undertaken to search for the Ir anomaly in a deep-sea-drilling core, in order to check this aspect of the asteroid-impact theory. |
| title | Geochemisty at DSDP Hole 62-465A |
| topic | 62-465A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg62; North Pacific/CONT RISE |
| url | https://doi.org/10.1594/PANGAEA.819742 |