An extraterrestrial event at the Cretaceous–Tertiary boundary

@article{Smit1980AnEE,
  title={An extraterrestrial event at the Cretaceous–Tertiary boundary},
  author={Jan C Smit and J. Hertogen},
  journal={Nature},
  year={1980},
  volume={285},
  pages={198-200}
}
Closely spaced samples from an uninterrupted calcareous pelagic sequence across the Cretaceous–Tertiary boundary reveal that the extinction of planktonic Foraminifera and nannofossils was abrupt without any previous warning in the sedimentary record, and that the moment of extinction was coupled with anomalous trace element enrichments, especially of iridium and osmium. The rarity of these two elements in the crust of the Earth indicates that an extraterrestrial source, such as the impact of a… CONTINUE READING
Highly Cited
This paper has 38 citations. REVIEW CITATIONS

From This Paper

Figures, tables, results, connections, and topics extracted from this paper.
21 Extracted Citations
0 Extracted References
Similar Papers

Citing Papers

Publications influenced by this paper.
Showing 1-10 of 21 extracted citations

Similar Papers

Loading similar papers…