U-Pb age of the Dzheltulinsky alkaline massif (South Yakutia) according to the result of the dating of zircon and Baddeleyite

Guzev V. E., Terekhov A. V., Molchanov A. V., Skublov S. G., Ashihmin D. S., Kozlov D. S.

Zapiski RMO (Proceedings of the Russian Mineralogical Society). 2021. V. 150. N 4. P. 115-134

https://doi.org/10.31857/S0869605521040043

Language: Russian

Abstract

The paper presents results of the complex geochemical and isotope-geochemical (SHRIMP-II, SIMS) study of rocks of the Dzheltulinsky massif located in the poorly studied Tyrkandinsky ore district. The massif is the largest intrusion in this district by the area of its outcropping. This is an annular pluton composed of ultrapotassic rocks of the syenite series and their extrusive analogues. According to results of the U-Pb isotope dating of zircon and baddeleyite, the massif was formed in the interval of 124–115 Ma.

Keywords: Dzheltulinsky massif, syenites, U-Pb dating, zircon, baddeleyite, REE