The Frequency of Meteorite Falls throughout the Ages

Details The Frequency of Meteorite Falls throughout the Ages The Frequency of Meteorite Falls throughout the Ages

Jul 1961

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961natur.191..482p&link_type=abstract

Nature, Volume 191, Issue 4787, pp. 482 (1961).

Computer Science

Scientific paper

Murray's and Renard's interpretation of the ``cosmic spherules'' found in deep-sea deposits1 that they are of cosmic origin, and were probably derived from iron meteors heated to superficial melting during flight through the atmosphere, seems to be generally accepted at present. Having myself studied hundreds of such spherules, extracted from deep-sea cores taken by the Swedish Albatross Expedition (1947-48), I have found Murray's description of their external structure confirmed. In addition, analyses of the composition of individual spherules by the Castaign microanalyser2 has confirmed that they contain, besides iron, also nickel and cobalt, which supports their extra-terrestrial origin as well as Murray's hypothesis that they are derived from meteors of the nickel-iron type.

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