Science and Technology News

Zircon U-Pb ages, geochemistry and isotopic characteristics of the Chu Lai granitic pluton in the Kontum massif, central Vietnam

.

The Chu Lai granite is widespread throughout the northern Kontum massif and is an important key in understanding the evolution of the Kontum region and its vicinity. The study presents new data on geochemistry, zircon U-Pb ages, and Nd-Hf isotopes from the Chu Lai granite which allows to constrain the Paleozoic tectonic evolution of the Kontum massif.

tuoi zircon

The Chu Lai granite contains alumina-rich minerals (garnet and muscovite), is depleted in Ba, Nb, Ta, Sr and Ti but enriched in Rb, Th, U and Pb. These geochemical characteristics indicate a S-type nature of the Chu Lai granite. The zircon ɛHf values vary between −16.7 to −1 and Hf model ages (TDM2) between 1.50 and 2.49 Ga as well as whole rock ɛNd values of −8.3 to −5.8 and Nd model ages (TDM2) between 1.67 and 1.89 Ga. The Hf-Nd isotope data indicate that the Chu Lai granite was derived from partial melting of Paleoproterozoic metasedimentary material. The LA-ICP-MS zircon U-Pb ages range from 445 Ma to 454 Ma, suggesting a crystallization of the Chu Lai granite during the Ordovician-Silurian period.
https://link.springer.com/article/10.1007/s00710-020-00707-x

Source: Vietnam National Museum of Nature

Copyright 2013 by VAST. All rights reserved
Address: 18 Hoang Quoc Viet, Cay Giay, Ha Noi. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Write source from VAST when issuing information on the Website.