Uranium distribution in Baikal sediments using SSNTD method for paleoclimate reconstruction

First data on local distribution of uranium in the core of Lake Baikal floor sediments (Academician ridge, VER-95-2, St 3 BC, 53°113′12′N/108°25′01′E) are presented in this paper. They have been obtained using (n,f)-radiography. Various forms of U-occurrence in floor sediments are shown, i.e. evenly...

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Bibliographic Details
Published in:Radiation measurements 1999-06, Vol.31 (1), p.657-660
Main Authors: Zhmodik, S.M., Mironov, A.G., Nemirovskaya, N.A., Zhatnuev, N.S.
Format: Article
Language:English
Subjects:
(n,f)-radiography
floor depositions
Lake Baikal
paleoclimate
Russia, Siberia, Baikal L
uranium
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Summary:First data on local distribution of uranium in the core of Lake Baikal floor sediments (Academician ridge, VER-95-2, St 3 BC, 53°113′12′N/108°25′01′E) are presented in this paper. They have been obtained using (n,f)-radiography. Various forms of U-occurrence in floor sediments are shown, i.e. evenly disseminated, associated with Clayey and diatomaceous components; micro- and macroinclusions of uranium bearing minerals - microlocations with uranium content 10–50 times higher than U-concentrations associated with clayey and diatomaceous components. Relative and absolute U-concentration can be determined for every mineral. Signs of various order periodicity of U-distribution in the core of Lake Baikal floor sediments have been found. Using (n,f)-radiography method of the study of Baikal floor sediment permits gathering of new information that can be used at paleoclimate reconstruction.
ISSN:1350-4487
1879-0925
DOI:10.1016/S1350-4487(99)00162-6