Are Ir anomalies sufficient and unique indicators for cosmic events?

Details Are Ir anomalies sufficient and unique indicators for cosmic events? Are Ir anomalies sufficient and unique indicators for cosmic events?

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001p%26ss...49..831k&link_type=abstract

Planetary and Space Science, Volume 49, Issue 8, p. 831-837.

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Scientific paper

Ir anomalies are often considered unique indicators for cosmic events. The present paper compares the contents and patterns of platinum group element (PGE) anomalies of magmatic and sedimentary origins with similar anomalies found in the Cretaceous-Tertiary (K//T) boundary impact clay and other PGE enriched layers across the K//T boundary and early Danian (Parvularugoglobigerina eugubina zone) at Beloc, Haiti. This analysis demonstrates that PGE patterns provide more conclusive evidence for the reconstruction of paleoevents than that can be achieved by Ir content alone.

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