Reactivation of Lufilian Arc in Zambia:Zircon and Apatite Fission Track Chronology
Ren Junping
Wang Jie
Zhang Donghong
Dokowe,A.P.
Chikambwe,E.M.
Zuo Libo
Xu Kangkang
Liu Xiaoyang
He Fuqing
Abstract：The fission track chronology of zircon and apatite are always used to reveal tectonic activities and evolutions.Based on zircon and apatite fission track analyses and thermal evolution history,in this paper,it discusses the tectonic thermal evolution process of Lufilian arc since the Pan-African tectonic movement.The Chambishi copper and the Nchanga copper and cobalt de-posits occur in the Zambian Copper belt of the Lufilian arc.Five fresh rock samples were taken from these two deposits,from which 5 zircon samples and 4 apatite samples were obtained.For the first time we obtained the fission track ages in Lufilian arc. The results are as follow:the ages from the 5 zircon analysis are 265±22 Ma,230±10 Ma,228±9 Ma,225±9 Ma and 221± 10 Ma respectively and those of the 4 apatite samples are 145±10 Ma,133±10 Ma,130±10 Ma and 92±9 Ma respectively and the length is between 11.4±2.4μm and 11.8±2.4μm.According to the modeling results of ecological thermal evolution histo- ry,from 300 Ma to 260 Ma the paleo-geotemperature continued to decrease to about 90 ℃ and it subsequently slowed down to the present surface temperature.Comparing the ages of the Lufilian belt with the Zambezi and Damara belts,it is believed that the Permian-Jurassic tectonic activities were regional tectonic reactive events in the Central and Southern Africa.
Keywords：fission track chronologyzircon and apatiteChambishi copper depositNchanga copper and cobalt depositLufilian arcZambiapetroleum geologytectonic
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 1850-1860 )