赞比亚卢弗里安弧构造带再活化的证据:锆石和磷灰石裂变径迹年代学

任军平; 王杰; 张东红; DokoweA.P.; ChikambweE.M.; 左立波; 许康康; 刘晓阳; 贺福清

doi:10.3799/dqkx.2018.610

Volume 43 Issue 6

Jun. 2018

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Article Navigation > Earth Science > 2018 > 43(6): 1850-1860

Ren Junping, Wang Jie, Zhang Donghong, Dokowe A. P., Chikambwe E. M., Zuo Libo, Xu Kangkang, Liu Xiaoyang, He Fuqing, 2018. Reactivation of Lufilian Arc in Zambia: Zircon and Apatite Fission Track Chronology. Earth Science, 43(6): 1850-1860. doi: 10.3799/dqkx.2018.610

Citation:

Ren Junping, Wang Jie, Zhang Donghong, Dokowe A. P., Chikambwe E. M., Zuo Libo, Xu Kangkang, Liu Xiaoyang, He Fuqing, 2018. Reactivation of Lufilian Arc in Zambia: Zircon and Apatite Fission Track Chronology. Earth Science, 43(6): 1850-1860. doi: 10.3799/dqkx.2018.610

Citation:

Ren Junping, Wang Jie, Zhang Donghong, Dokowe A. P., Chikambwe E. M., Zuo Libo, Xu Kangkang, Liu Xiaoyang, He Fuqing, 2018. Reactivation of Lufilian Arc in Zambia: Zircon and Apatite Fission Track Chronology. Earth Science, 43(6): 1850-1860. doi: 10.3799/dqkx.2018.610

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Reactivation of Lufilian Arc in Zambia: Zircon and Apatite Fission Track Chronology

doi: 10.3799/dqkx.2018.610

1.
Tianjin Institutes of Geology and Mineral Resources, China Geological Survey, Tianjin 300170, China
2.
NFC Africa Mining Plc, P. O. Box 22592 Kitwe, Zambia
3.
Geological Survey Department of Zambia, P. O. Box 50135 Lusaka, Zambia

Received Date: 2018-01-28
Publish Date: 2018-06-15

Abstract

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 deposits 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±2.4 μm and 11.8±2.4 μm. According to the modeling results of ecological thermal evolution history, 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.
- fission track chronology,
- zircon and apatite,
- Chambishi copper deposit,
- Nchanga copper and cobalt deposit,
- Lufilian arc,
- Zambia,
- petroleum geology,
- tectonic

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References(50)

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