Chronological characteristics and tectonic significance of Her-cynian intrusive rocks at Yongzhuquan, Ejina Banner, Inner Mongolia

WANG Deqiang; XUE Pengyuan; ZHANG Zhengping; PAN Zhimin; LIANG Guoqing; LIU Guang

2017 Vol. 36, No. 9

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WANG Deqiang, XUE Pengyuan, ZHANG Zhengping, PAN Zhimin, LIANG Guoqing, LIU Guang. Chronological characteristics and tectonic significance of Her-cynian intrusive rocks at Yongzhuquan, Ejina Banner, Inner Mongolia[J]. Geological Bulletin of China, 2017, 36(9): 1514-1524.

Citation:

WANG Deqiang, XUE Pengyuan, ZHANG Zhengping, PAN Zhimin, LIANG Guoqing, LIU Guang. Chronological characteristics and tectonic significance of Her-cynian intrusive rocks at Yongzhuquan, Ejina Banner, Inner Mongolia[J]. Geological Bulletin of China, 2017, 36(9): 1514-1524.

Chronological characteristics and tectonic significance of Her-cynian intrusive rocks at Yongzhuquan, Ejina Banner, Inner Mongolia

Hebei Institute of Regional Geological and Mineral Resource Survey, Langfang 065000, Hebei, China

Received Date: 20 November 2016

Revised Date: 27 February 2017

Publish Date: 25 September 2017

Abstract

Abstract

The Yongzhuquan intrusive rocks to the north of the Yueyashan tectonic melange zone in Inner Mongolia constitute a large intrusive body. 1:50000 regional geological survey shows that the rock mass is decomposed into granodiorite, monzonitic gran-ite and syenogranite. The zircon U-Pb age of the monzogranite is 330.7±2.9 Ma, suggesting Early Carboniferous and indicating that the Late Paleozoic magmatism in the Beishan area was very active. Through the analysis of rock chemistry and geochemical character-istics, the authors hold that it was formed in a tension tectonic setting and that the tectonic setting of the Beishan area in the Early Carboniferous entered into a stretching environment. This conclusion is of great significance for the study of the crustal evolution of Late Paleozoic in Beishan area.
- Beishan area /
- Yongzhuquan /
- granite /
- geochemical characteristics /
- zircon U-Pb age /
- Early Carboniferous /
- stretching envi-ronment

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References

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