US EPA

8782560 

Journal Article 

Features of radioactive element distribution within the Arkhangelsk diamondiferous province: possible directions for development of isotope-radiogeochemical methods for kimberlite prospecting in complex landscape-geology and climate conditions of the subarctic zone 

Yakovlev, E 

2020 

Yes 

Geochemistry: Exploration, Environment, Analysis
ISSN: 1467-7873 

20 

3 

269-279 

English 

10.1144/geochem2019-023 

WOS:000559003500002 

The effectiveness of traditional methods of searching for kimberlite pipes in the Arkhangelsk diamondiferous province (in the subarctic zone of Russia) has decreased greatly in recent years, and new methods of kimberlite exploration must therefore be developed. This study discusses new patterns of the distribution of natural radioactive isotopes within the Arkhangelsk diamondiferous province (Zolotitskoe kimberlite field), and the uranium isotopes U-234 and U-238 in particular. A variety of isotope radiogeochemical studies has shown that the kimberlite pipes are characterized by local radioisotope anomalies, on the surface and in exploration drill cores. These irregularities are clearly manifested in the formation of a non-equilibrium anomalous uranium isotope composition in the surrounding rocks and groundwater of the near-contact zone of the pipes. These uranium isotopes can be used to explore for kimberlites in other areas with similar complex landscape-geology and climate conditions of the subarctic zone. 

non-equilibrium uranium; natural radioactive elements; kimberlite field; near-contact zone; survey methods