The LA-ICP-MS U-Pb zircon age of rhyolite from the Dong Trau formation and its geological significances

Phạm Trung Hiếu

Tóm tắt

Zircons separated from an rhyolite sample in the Dong Trau formation, in the southern of Hà Tĩnh province were dated to determine the protolith age for the complex. Sixteen LA-ICP-MS U-Pb zircon analyses give concordant ages concentrated at 256 Ma (weighted mean). These results indicate the protolith age of the rhyolite (primary magma crystallization age). The value of this age are close to the analytical results pf the whole rock by Rb-Sr method and biotite Rb-Sr method. Therefore the crystallization age of the rhyolite from the Đồng Trầu formation corresponded period late Permian to early Triassic.

Link xem chi tiết bài báo khoa học

Liên hệ

KHOA ĐỊA CHẤT

227 Nguyễn Văn Cừ, Q.5, Tp. Hồ Chí Minh
Điện thoại: (+84) 28.38 355 271
Fax: 84.028. 8 350 096         
Email: khoadiachat@hcmus.edu.vn
Văn phòng Khoa Địa Chất: dãy C phòng C13 lầu 1

Search VN