Journal
DOKLADY EARTH SCIENCES
Volume 467, Issue 2, Pages 331-336Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1028334X16040152
Keywords
-
Categories
Ask authors/readers for more resources
The analysis of the Sr and Nd isotopic composition in different granitoids of the Verkhisetsk, Shartash, Krasnopolsk, Petrokamensk, and Shabry massifs, which were successively formed in the island arc, continental marginal, and collisional geodynamic settings during the period from the Middle Devonian to the early Permian, revealed that Sr-87/Sr-86(0) values in them vary from 0.70331 to 0.70431 and epsilon(Nd)(t), from +1.9 to +6.2. The two-stage model Nd age of granitoids (938-629 Ma) indicates that their magma originates from material at least Neoproterozoic in age, not younger. The observed variations in the Nd model ages of granitoids and Sr-87/Sr-86(0) values provide grounds for assuming the primary heterogeneity of the source of granitoid melts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available