Extraterrestrial component associated with Australasian microtektites in a core from ODP Site 758B

Details Extraterrestrial component associated with Australasian microtektites in a core from ODP Site 758B Extraterrestrial component associated with Australasian microtektites in a core from ODP Site 758B

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993e%26psl.119..453k&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 119, no. 3, p. 453-458

Physics

Geophysics

9

Abundance, Extraterrestrial Matter, Geomagnetism, Geophysics, Iridium, Sediments, Trace Elements, Anomalies, Australia, Copper, Iron, Nickel

Scientific paper

Major and trace element analyses of 30 sediment samples from ODP Core 758B across the Brunhes-Matuyama geomagnetic polarity reversal and the Australasian microtektite-bearing layer show a small but significant anomaly in the elemental abundances of Ir, Co and Ni. The maximum of the anomaly between 10.89 and 11.00 m below seafloor correlates with the maximum abundance of microtekites. Iridum abundances, which show the most significant anomaly, reach 0.16 ppb, which is evidence for an extraterrestrial component.

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