Abstract Technetium-101 (101Tc) has been poorly studied in comparison with other Tc
isotopes, although it was first identified over~ 80 years ago shortly after the discovery of the …

We present the results of a coordinated NAUTILUS and NanoSIMS isotopic study of epsilon
(ε) phase metallic aggregates from the Oklo natural nuclear reactor zone (RZ) 13. We …

Stone tool-making is a reductive process. Synthetic rock manufacturing, preeminently an
additive process, will not for-ever be confined to only the Earth-biosphere. This brief focuses …

For several decades, an invariable 238U/235U ratio of 137.88 was assumed throughout the
solar system, including Earth, due to uranium's heavy mass. However, recent studies have …

In the Precambrian, parts of the Oklo, Okélobondo and Bangombé uranium deposits of the
Republic of Gabon, central Africa, functioned as natural fission reactors. Many elements in …

Isotopic analyses of elements in the natural reactor materials have often been performed to
understand the distribution behaviors of the fission products and to evaluate the function of …

抄録 Nuclear reactions are one of major causes of isotopic variations of several elements in
natural materials. The Oklo uranium ore in the Francevillian Basin at Republic of Gabon is …