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Science 27 January 1967:
Vol. 155. no. 3761, pp. 446 - 448
DOI: 10.1126/science.155.3761.446
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Articles

Aluminum-26 in Pacific Sediment: Implications

John T. Wasson 1, B. Alder 2, and H. Oeschger 2

1 Department of Chemistry and Institute of Geophysics and Planetary Physics, University of California, Los Angeles 90024
2 Physikalisches Institut, Universität Bern, Bern, Switzerland

Aluminum-26 has been detected in a sample of sediment from the South Pacific. The disintegration rate of 0.8 disintegration per minute per kilogram of dry sediment is considerably higher than that expected from cosmic-ray spallation of atmospheric argon; it appears to result mainly from accretion of activity induced in interplanetary dust by solar-flare particles. This finding is in keeping with Wasson's published estimates regarding the magnitude of this effect, and confirms the order-of-magnitude correctness of the solar-particle flux and terrestrial accretion rate of interplanetary dust used in that calculation.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Aluminum-26 in Deep-Sea Sediment.
J. L. Reyss, J. L. REYSS, Y. YOKOYAMA, and S. TANAKA (1976)
Science 193, 1119-1121
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Aluminum-26 and Beryllium-10 in Marine Sediment.
S. Tanaka, S. Tanaka, K. Sakamoto, J. Takagi, and M. Tsuchimoto (1968)
Science 160, 1348-1349
   Abstract »    PDF »
Influx Measurements of Extraterrestrial Material: Sea sediments, polar ice, air, and space are searched for amount and character of interplanetary debris.
D. W. Parkin, D. W. Parkin, and D. Tilles (1968)
Science 159, 936-946
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Aluminum-26 and Beryllium-10 in Greenland Ice.
R. McCorkell, R. McCorkell, E. L. Fireman, and C. C. Langway Jr. (1967)
Science 158, 1690-1692
   Abstract »    PDF »
Zodiacal Dust and Deep-Sea Sediments.
S. F. Singer (1967)
Science 156, 1080-1083
   Abstract »    PDF »


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