Abstract
Monazite from rare-metal-rare-earth alkaline metasomatites of the Lower Mezen occurrence of the Middle Timan has a predominantly cerium composition (Ce2O3 > La2O3). The weighted average value of the point (Th-U-Pb, CHIME) age of monazites was (564 ± 27) Ma, the age of monazites, obtained from the ThO2*–PbO isochrone, is (566 ± 127) Ma. The age of the monazite is close in time to the monazites of the Novobobrovsky ore field and the Vendian igneous formations (ultramafic rocks and carbonatites of the Chetlas Complex) formed as a result of a plume pulse.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
