Discovery of Carboniferous Diorite from Moheertu in Dongwuqi Area, Inner Mongolia: Evidence from Zircon U-Pb Geochronology

Abstract

Abstract:

Dongwuqi area in Inner Mongolia, which lies in Uliastai active continental margin, is a part of Central Asian orogenic belt. Numerous magmatites are exposed in this area. The intrusive rocks mainly formed in Permian and Late Mesozoic, and seldom formed in the other period according to report. Diorite was discovered in Moheertu of this area during the 1∶50,000 regional geological surveys. By LA-MC-ICP-MS U-Pb isotopic dating for 24 zircons, weighted mean age of (337.1±1.9) Ma (MSWD=1.3) was obtained from the diorite. The characteristics of these zircons accord with magmatic zircon, and the results can represent the diagenetic age of diorite. Combined with regional geology, we concluded that a tectonothermal event occurred during 337-310 Ma in Dongwuqi area.

Key words: zircon U-Pb dating, Carboniferous, diorite, Dongwuqi, Inner Mongolia, Central Asian orogenic belt

CLC Number:

P588.12⁺2

YANG Jun-quan, ZHANG Su-rong, LIU Yong-shun, CHENG Yin-hang, TENG Xue-jian. Discovery of Carboniferous Diorite from Moheertu in Dongwuqi Area, Inner Mongolia: Evidence from Zircon U-Pb Geochronology[J]. Geoscience, 2014, 28(3): 472-477.

[1]	CHEN Yaoxin, LIU Wenheng, WANG Kaixing, LIU Xiaodong, SUN Liqiang, YIN Donghua. Petrogenesis and Tectonic Implications of the Zhongpai Fine-grained Granite in Qingshanbao, Gansu: Constraints from Geochemistry and Zircon U-Pb Chronology [J]. Geoscience, 2024, 38(01): 169-182.
[2]	ZHOU Yan, FAN Feipeng, KANG Congxuan, ZHAO Xilin, XIAO Fan, XU Mincheng, SHEN Mangting, ZHU Yiping. Geochronological and Geochemical Characteristics of the Tianchitang Granodiorite in Southwestern Fujian Province: Indications for the Regional Metallogeny [J]. Geoscience, 2023, 37(06): 1467-1481.
[3]	SONG Yanbo, WANG Jianping, SHEN Cunli, CHE Dong, YANG Wenhua, GUO Haijiao. Geological and Geochemical Characteristics of Ore-forming Granite Porphyry and Its Metallogenic Significance in the Zhalageamu Copper Deposit, Inner Mongolia [J]. Geoscience, 2023, 37(06): 1482-1494.
[4]	WANG Ruiting, LI Qingfeng, QIN Xishe, ZHANG Bin, WANG Bowen, JI Yuefei. Zircon U-Pb Isotopic Geochronology,Bulk Geochemistry and Their Geological Significance of the Quartz Monzodiorite from the Taibaihe Region in the South Qinling Orogen [J]. Geoscience, 2023, 37(03): 562-572.
[5]	LU Hao, LIU Huan, HU Feng, WANG Haibo, WANG Chao, KONG Xiangchao. Record of Mesozoic Collision Orogeny on the Eastern Section of the West Kunlun Orogen: Evidence from Geochronology and Geochemistry of the Triassic Wenquan-Shenglidaban Granitic Intrusions, Xinjiang [J]. Geoscience, 2023, 37(03): 573-585.
[6]	XUE Zhongkai, FAN Baocheng, HUANG Haoqing, TANG Weidong, GE Zhanlin, LI Pengwei, HU Jianhui, YANG Xiaoqi, GUO Yongchao, LI Kong. Geochronology and Geochemistry of the Intermediate-basic Dikes in the Beishan Area, Inner Mongolia: Implications for Tectonic Evolution of the Northern Margin of the Tarim Plate [J]. Geoscience, 2023, 37(03): 627-644.
[7]	HU Ziqi, ZHANG Dexian, LIU Lei. Discussion on Spot Size and Energy Density Effects on Zircon U-Pb Dating Precision [J]. Geoscience, 2023, 37(03): 722-732.
[8]	DENG Ke, WANG Jingui, DONG Yujie, HE Linwu, YUAN Renhua, ZHANG Zeguo, CHEN Shouguan, XIN Tang. Genesis and Geological Significance of Late Cretaceous Intermediate Intrusions in Sangye, Tibet [J]. Geoscience, 2023, 37(02): 375-389.
[9]	LIU Jinbao, ZHU Luoting, LI Longxue, HOU Qingye. Geochemistry and Tectonic Significance of the Weijing Pluton in Airgin Sum Area, Inner Mongolia [J]. Geoscience, 2023, 37(02): 419-432.
[10]	LI Bo, JIN Sheng, YE Gaofeng, WEI Wenbo. Lithospheric Electrical Structure of Eastern Segment of Central Asian Orogenic Belt and Its Tectonic Implications [J]. Geoscience, 2023, 37(01): 15-30.
[11]	REN Chenghao, SHE Hongquan, KE Changhui, SUN Yandong, ZHOU Qunmao, JIAO Tianlong, LI Baoliang. Study on the Intrusive Ages of the Granites and Metallogenic Age from Zhongteng Copper Deposit, Pinghe, Fujian Province [J]. Geoscience, 2022, 36(06): 1447-1464.
[12]	FAN Dan, LI Di, HE Dengfa, HOU Shuoqin, SUN Tiange, YANG Hao, ZHEN Yu. Carboniferous Tectono-stratigraphic Division and Basin-forming Background in the Bogda Area, Eastern Tianshan [J]. Geoscience, 2022, 36(05): 1206-1217.
[13]	CHEN Jun, WANG Jian, LEI Haiyan, MA Cong, MENG Ying, QI Jing. Characteristics of Igneous Weathering Crust Reservoir and Its Relation With Oil and Gas Productivity: A Case Study of the Carboniferous Hongshanzui Reservoir, Junggar Basin [J]. Geoscience, 2022, 36(04): 1009-1021.
[14]	YANG Yanwei, LU Xinxiang, WANG Liwei, YANG Yi, YANG Chongke, HUANG Fan. Dangjiasi Granite Complex and Late Triassic Dykes in Qinghai Nanshan Tectonic Zone, and Its Constraints on the Early Mesozoic Tectonic Environment [J]. Geoscience, 2022, 36(03): 796-811.
[15]	SHAO Longfei, YU Fusheng, WANG Dandan, LI Chao. Geochronology, Geochemistry,and Tectonic Significance of Carboniferous Andesite in the Zhongguai Uplift, Northwestern Margin of the Junggar Basin [J]. Geoscience, 2022, 36(03): 812-823.

Discovery of Carboniferous Diorite from Moheertu in Dongwuqi Area, Inner Mongolia: Evidence from Zircon U-Pb Geochronology

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments