Physics
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..85..356s&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 85, no. 4, Oct. 1987, p. 356-364. Research supported by the Unocal Fo
Physics
17
Beryllium, Geochemistry, Lithology, Ocean Bottom, Atlantic Ocean, Chronology, Sediments, Temporal Distribution
Scientific paper
The influx of Be-10 into the calcareous ooze core CH72-02 from the eastern North Atlantic is investigated, and the marine deposition of Be-10 is found to be strongly influenced by the sedimentation of clays. The deposition rate of Be-10 averaged over each oxygen-isotope stage for the past 11 stages shows a scatter of + or - 40 percent about a mean value of 6.6 x 10 to the 8th atoms/sq cm per ka, although the production rate of Be-10 over the same period is found to vary by no more than + or - 25 percent. It is suggested that on the time scale of the present study the shielding effect of the solar wind has probably not deviated by more than + or - 25 percent, or the geomagnetic field intensity by more than a factor of 1.6, from their long-term averages.
Duplessy Jean-Claude
Ku Teh-Lung
Nelson D. E.
Reyss Jean Louis
Southon John R.
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