The study of distribution and forms of uranium occurrences in Lake Baikal sediments by the SSNTD method

Sediments of Lake Baikal drill cores VER-96-1 St8 TW2 (53∘32′15″E; 107∘56′25″N), (interval 181.8-235 cm from the sediment surface) were studied by means of SSNTD with the aim of defining uranium occurrence in the sediments and the uranium concentration. The neutron-fission ((n,f)-autoradiographic) method allowed a detailed study of uranium distribution of these Lake Baikal sediments within the Academicheskiy Ridge. Layered accumulations of uranium-bearing grained phosphorite, uranium-bearing particles of organic material, and abnormal uranium concentration in diatomite of unknown origin were discovered.