Discovery of the Late Carboniferous alkali-feldspar granite from the Bulinmiao area in Inner Mongolia and its constraints on the evolution of the Paleo-Asian-Ocean

HAO Shuqing; RONG Xiuwei; WANG Lijuan; LI Mengxing

doi:10.12097/j.issn.1671-2552.2022.09.010

2022 Vol. 41, No. 9

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HAO Shuqing, RONG Xiuwei, WANG Lijuan, LI Mengxing. Discovery of the Late Carboniferous alkali-feldspar granite from the Bulinmiao area in Inner Mongolia and its constraints on the evolution of the Paleo-Asian-Ocean[J]. Geological Bulletin of China, 2022, 41(9): 1613-1623. doi: 10.12097/j.issn.1671-2552.2022.09.010

Citation:

HAO Shuqing, RONG Xiuwei, WANG Lijuan, LI Mengxing. Discovery of the Late Carboniferous alkali-feldspar granite from the Bulinmiao area in Inner Mongolia and its constraints on the evolution of the Paleo-Asian-Ocean[J]. Geological Bulletin of China, 2022, 41(9): 1613-1623. doi: 10.12097/j.issn.1671-2552.2022.09.010

Discovery of the Late Carboniferous alkali-feldspar granite from the Bulinmiao area in Inner Mongolia and its constraints on the evolution of the Paleo-Asian-Ocean

1.
Shanxi Third Geological Engineering Investigation Institute Co., Ltd., Jinzhong 030620, Shanxi, China
2.
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, Hebei, China
3.
Shanxi Institute of Geological Survey Co., Ltd., Taiyuan 030006, Shanxi, China

More Information

Corresponding author: WANG Lijuan, 282665774@qq.com

Received Date: 02 July 2019

Revised Date: 01 July 2021

Publish Date: 15 September 2022

Abstract

Abstract

In this paper, LA-ICP-MS zircon U-Pb dating and geochemical characteristics of the Bulinmiao alkali-feldspar granite pluton located in the northern margin of the Hegenshan ophiolite belt are studied in order to explain its petrogenesis and tectonic significance.The study shows that the zircon U-Pb dating give weighted average age of 304±1 Ma, indicating that it is the product of magmatic activity in the Late Carboniferous.The general characteristics of the granite samples are similar, showing the characteristics of high silicon, rich alkali, rich K, and weak peraluminous.Trace elemental data of these rocks show LILE(Rb, K)enrichment, HFSE(P, Sr, Ti)depletion.Combining with the 10000Ga/Al value, TFeO, Zr contents and zircon saturation temperatures of the sample, the pluton is an aluminous A-type granite and belongs to the high-K calc-alkaline series.The granite was the product of the early stage post-orogenic extension after closure of Hegenshan Ocean.
- Bulinmiao /
- alkali-feldspar granite /
- zircon U-Pb dating /
- geochemistry /
- petrogenesis /
- geological survey engineering /
- Inner Mongolia

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References

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