Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985geoji..83..683p&link_type=abstract
Geophysical Journal International, Vol. 83, No. 3, p. 683 - 698
Astronomy and Astrophysics
Astrophysics
Solar Constant, Spherules:Origin
Scientific paper
The Poynting-Robertson effect, applied to "iron" spherules in dated deep-sea cores, should provide a test of whether or not cosmic spherules originate in asteroidal collisions. If an asteroidal origin is correct, if follows, from mass influx estimations, that an appreciable fraction of spherules must exist in the zodiacal cloud. Catastrophic asteroidal collision is suggested in order to produce a copious supply of melt-ejecta by frictional heating. It is also presumed that meteoritic chondrules were large droplets formed in ancient catastrophic asteroidal collisions. To detect changes in the Sun's luminosity, very accurate plotting is required. It is shown that the errors of the method are too great to detect any possible changes during the glacial cycles.
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