Siderophile-enriched sediments from the Cretaceous-Tertiary boundary

Details Siderophile-enriched sediments from the Cretaceous-Tertiary boundary Siderophile-enriched sediments from the Cretaceous-Tertiary boundary

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.288..651k&link_type=abstract

Nature, Volume 288, Issue 5792, pp. 651-656 (1980).

Physics

35

Scientific paper

Siderophilic element concentrations are high in sediments from the Cretaceous-Tertiary boundary. An extraterrestrial source is indicated. Concentrations are too high to be understood in terms of the impact of a chondritic asteroid. Either the projectile was a metal-sulphide core or the infailing material (probably weak cometary matter) was slowed down during atmospheric passage.

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