|
Global Geology 2015, 18(4) 213- DOI:
ISSN: 1673-9736 CN: 22-1371/P |
|
|
|
|
Current Issue |
Archive |
Search
[Print]
[Close]
|
|
论文 |
|
LA- ICP- MS zircon U- Pb age of rhyolitic lithic- crystal tuffs in Erdaohezi lead- zinc deposit,Inner Mongolia |
|
|
YAN Jia, SUN Jinggui, ZHAO Shifeng and MING Zhu |
|
|
College of Earth Sciences,Jilin University,Changchun 130061,China |
|
|
Abstract:
Erdaohezi lead- zinc deposit belongs to the Derbugan metallogenic belt lying on the northwestern Hailaer- Genhe Mesozoic volcanic basin, located on the western slope of the Da Hinggan Mountains. The deposit is considered as one of the hypabyssal low- temprature hydrothermal lead- zinc deposits associated with volca- nism. In order to lay the foundation on studying its diagenesis and mineralization ages, the detailed studies were carried out by dating the host rocks (i.e. rhyolitic lithic- crystal tuffs) using zircon LA- ICP- MS U- Pb method. The dating results show three groups of ages. The first group is the captured zircons (the weighted mean 206 Pb/ 238 U age as 175.6 ± 2.3 Ma,MSWD = 0.70,n = 3). The second group can be regarded as the rock- forming age (the weighted mean 206 Pb/ 238 U age as 165.3 ±1.9 Ma,MSWD =2.40,n =14). The third group should represent the late stage of the magmatic evolution (the weighted mean 206 Pb/ 238 U age as 161. 0 ± 3.1 Ma,MSWD =0.86,n =4). According to the ages and the crystal form or CL image characteristics of zircons, it is determined that the diagenesis occurred in the late Middle Jurassic. Based on the regional geology and geo- chronological research,the acidic pyroclastic rocks are space accompaniment and time connection with the Tamu- langou Formation intermediate- mafic volcanic rocks. Both of them constitute the host rocks of the deposit togeth- er. The rock combination also provides favorable conditions for large- scale silver,lead and zinc mineralization in this area. |
|
Keywords:
rhyolitic lithic- crystal tuffs
zircon U- Pb age
Erdaohezi lead- zinc deposit
Inner Mongolia
Da Hinggan Mountains
|
|
|
Received Revised Online: |
|
|
DOI: |
|
|
Fund: |
|
Corresponding Authors: |
|
Email: |
|
|
About author: |
|
|
References: |
|
Similar articles |
1.WANG Yongchun,ZHONG Linshan,ZHAO Han and WU Qiong . Geoid interpolation in Gongzhuling City and the 1cm quasi geoid reffnement
[J]. Global Geology, 2024,27(4): 207-215 |
2.QIN Tao,FANG Jie,ZHANG Yanlong,DING Xin,YU Guanying and YANG Hao . Geochronology and geochemistry of Daerlong granitic complex in Linkou area, eastern Heilongjiang: petrogenesis and tectonic implications
[J]. Global Geology, 2024,27(4): 177-195 |
3.LI SiJia,SHEN YanJie and QIAN Ye . Research on rock hand specimen naming method based on deep learning and Inception-v3 model
[J]. Global Geology, 2024,27(4): 196-206 |
4.LI Zizhuo, LIU Yunhe* and REN Xiuyan . 3D time-domain forward modeling of airborne transient electromagnetism considering superparamagnetic effect
[J]. Global Geology, 2024,27(4): 216-232 |
5.Kovalenko S. V. 1,Kezina T. V. 2*,Kryuchko E. I. 1 and Mironov M. A. 1 . Preliminary results of lithological and palynological study of Svobodny, ancient man’s parking relic in Amur region, Russia [J]. Global Geology, 2024,27(3): 121-131 |
6.ZHANG Xinrong,WANG Jiayu,PING Shuaifei and LI Yaran . Changes of grain size from peat proffle in eastern mountainous area over past 2000 years, Jilin Province, Northeast China [J]. Global Geology, 2024,27(3): 132-144 |
7. CHEN Xuanning, HAN Fuxing, GAO Zhenghui *,SUN Zhangqing and HAN Jiangtao . Horizontal-to-vertical spectral ratio inversion method based on multimodal forest optimization algorithm[J]. Global Geology, 2024,27(3): 167-176 |
8.DU Meng,MAO Weijian,YANG Maoxin and ZHAO Jianzhi . Migration images guided high-resolution velocity modeling based on fully convolutional neural network [J]. Global Geology, 2024,27(3): 145-153 |
9.WEI Laonao, LIU Yunhe* and ZHANG Bo . UAV-based transient electromagnetic 3D forward modeling and inversion and analysis of exploration capability [J]. Global Geology, 2024,27(3): 154-166 |
10.GUAN Yue,YU Yinghua,ZHANG Yaxiong and YUAN Hongqi . Characteristics of geological structures in Shiling and Zhuanshanhu areas of Yehe Uplift, NE China [J]. Global Geology, 2024,27(2): 105-120 |
11.NWABUEZE Ekene Chibuike,LIANG Chenyue,SONG Zhiwei,ZHAO jiaqi,ENEZE Florence Ego and ZHENG Changqing. Deformation characteristics of granitic rocks in Erguna ductile shear zone, NE China[J]. Global Geology, 2024,27(2): 63-75 |
12. LI Yonggang and YAN Bo . Facies logging identiffcation of intermediate-basic volcanic rocks in Huoshiling Formation of Songliao Basin[J]. Global Geology, 2024,27(2): 93-104 |
13.LI Meihui,ZHENG Changqing and LIANG Chenyue . Metamorphic P-T conditions and zircon U-Pb ages of amphibolite in Laojinchang area, southern Jilin Province[J]. Global Geology, 2024,27(2): 76-92 |
14.JIA Zhenyang,LI Gang and FENG Fan . Numerical simulation of formation mechanism of unloading joints in granitic pluton[J]. Global Geology, 2024,27(1): 35-42 |
15.WANG Weihua and WANG Tingting . Acoustic emission signal identi?cation of di?erent rocks based on SE-1DCNN-BLSTM network model [J]. Global Geology, 2024,27(1): 43-55 |
|
Copyright by Global Geology |