Zircon U-Pb ages and geochemical characteristics of the granite porphyry in Qingchaguan-Yuanbaoshan area, northern Dashitou Town, Jilin Province

GAO Feng; WEI Qiaoqiao; MU Jingtao; QIU Hong; YU Lei; MA Junyu

2017 Vol. 36, No. 11

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GAO Feng, WEI Qiaoqiao, MU Jingtao, QIU Hong, YU Lei, MA Junyu. Zircon U-Pb ages and geochemical characteristics of the granite porphyry in Qingchaguan-Yuanbaoshan area, northern Dashitou Town, Jilin Province[J]. Geological Bulletin of China, 2017, 36(11): 2082-2090.

Citation:

GAO Feng, WEI Qiaoqiao, MU Jingtao, QIU Hong, YU Lei, MA Junyu. Zircon U-Pb ages and geochemical characteristics of the granite porphyry in Qingchaguan-Yuanbaoshan area, northern Dashitou Town, Jilin Province[J]. Geological Bulletin of China, 2017, 36(11): 2082-2090.

Zircon U-Pb ages and geochemical characteristics of the granite porphyry in Qingchaguan-Yuanbaoshan area, northern Dashitou Town, Jilin Province

1.
Jilin Geological Party, Geological Survey Center of China Building Materials Industry, Changchun 130033, Jilin, China
2.
College of GeoExploration Science and Technology, Changchun 130031, Jilin, China

More Information

Corresponding author: WEI Qiaoqiao, gaofeng_861212@126.com

Received Date: 19 June 2017

Revised Date: 20 September 2017

Publish Date: 25 November 2017

Abstract

Abstract

The granite porphyry in Qingchaguan-Yuanbaoshan area, northern Dashitou Town, Jilin Province, is characterized by high SiO₂, rich aluminum, high rare earth elements (REE) and high large ion lithophile elements (LILE).The REE patterns are characterized by enrichment of LREEs relative to HREEs and distinct negative Eu anomalies in chondrite-normalized REE patterns, with right oblique and "V" shaped feature.The zircons from the granite porphyry show oscillatory growth zonation of typical magmatic origin and high Th/U ratios (0.47~1.07), indicating a magmatic origin for the zircons. The LA-ICP-MS dating of a zircon sample yielded U-Pb age of 116.8±1.5Ma (n=13, MSWD=1.13). These features suggest that the granite porphyry belongs to I-type granite of high potassium calc-alkaline and differentiation, being post-collisional granitoid, and its formation may be associated with the subduction of the ancient Pacific plate.
- granite porphyry /
- LA-ICP-MS zircon U-Pb dating /
- I-type granite /
- post-collisional environment

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References

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