Implications of precise 10Be measurements in deep-sea sediments

Sharma, P. ; Somayajulu, B. L. K. (1984) Implications of precise 10Be measurements in deep-sea sediments Chemical Geology, 46 (2). pp. 89-96. ISSN 0009-2541

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0009-2541(84)90182-7

Abstract

Precise 10Be measurements in a vertical profile of a large-diameter gravity core with uniform chemical composition from the central equatorial Pacific have not shown the expected decrease with depth. The decay-corrected 10Be activities ranged from 5.79±0.21 d.p.m. kg−1 at the top of the core to 9.88±0.46 d.p.m. kg−1 at the bottom, with a mean of 7.24±1.18 d.p.m. kg−1. This variation is attributable to the combined variations in the intensity of cosmic rays and that of the earth's magnetic field during the past ~1 Ma.

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Deposited On:21 Jul 2011 10:23
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