2021 Vol. 27, No. 4

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2021, 27(4): 封三-封三.
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2021, 27(4): .
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2021, 27(4): .
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2021, 27(4): 封二-封二.
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Chief Editor’s Address
2021, 27(4): 489-490.
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2021, 27(4): 491-496. doi: 10.12090/j.issn.1006-6616.2021.27.04.044
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Mesozoic tectonic deformation and its rock/ore-control mechanism in the important metallogenic belts in South China
ZHANG Da, LI Fang, HE Xiaolong, HU Bojie, ZHANG Xinming, BI Minfeng, WANG Sen, HUO Hailong, XUE Wei, LIU Songyan
2021, 27(4): 497-528. doi: 10.12090/j.issn.1006-6616.2021.27.04.045
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Since the Mesozoic, the convergence of the Tethys ocean plate and the Paleo-Pacific plate on the South China block has resulted in the multi-sequence tectonic deformation as well as the multi-stage magmatic and metallogenic events, and has formed many important polymetallic metallogenic belts in Sou...
The migration rule of the ore-forming fluids in the Meso-Cenozoic Basins, Southwestern Tianshan, China
JIA Runxing, FANG Weixuan
2021, 27(4): 529-541. doi: 10.12090/j.issn.1006-6616.2021.27.04.046
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The Wulagen pb-zn deposit and the Sareke copper deposit, two most representative strata-bound glutenite deposits in the Meso-Cenozoic Basins in Southwestern Tianshan, are the subjects of our study. The Wulagen pb-zn deposit occurred in the coarse sandy fine conglomerates in the Section 5 of the Lowe...
Geophysical data interpretation of the tectonic deformation lithofacies belts in the ore field: Application in ore prospecting
ZHANG Baolin, LYU Guxian, YU Jianguo, LIANG Guanghe, XU Xingwang, LI Zhiyuan, ZHANG Qipeng, SHI Xiaoming, WEI Junbin, XU Daoxue, LI Xu, ZHAO Peng
2021, 27(4): 542-556. doi: 10.12090/j.issn.1006-6616.2021.27.04.047
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Based on the physical parameters of the rocks (ores) and the genetic types of ore deposits, the geophysical exploration models have met issues of multiple solutions for deep prospecting prediction. It is necessary to find recognizable geological targets with high precision by geophysical methods. Th...
On relationship between the superimposed mineralization systems and the zoning patterns of vertical tectonic lithofacies in the Gejiu concentration area of Sn-Cu-W and three rare metals in Yunnan
FANG Weixuan, GUO Yuqian, JIA Runxing, TONG Xiang, MA Zhenfei
2021, 27(4): 557-584. doi: 10.12090/j.issn.1006-6616.2021.27.04.048
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Based on the zoning pattern and the deformation sieving of tectonic lithofacies, as well as the macroscopic and microscopic studies of tectonic lithofacies, the superimposed mineralization systems and the Gejiu ore-concentrated area in Yunnan has been studied. The relationship among the enrichment m...
A preliminary study on the Mesozoic massive gold metallogenic mechanism of the deep-large fault coupling with critical water in the Jiaodong area, China
HU Baoqun, GAO Haidong, WANG Yun, ZHANG Baolin, LYU Guxian
2021, 27(4): 585-595. doi: 10.12090/j.issn.1006-6616.2021.27.04.049
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This study aims to study the reason why a huge accumulation of gold deposits occurred in the Jiaodong area. We summarized and analyzed the geological background and metallogenic characteristics of the Jiaodong gold deposits. In parallel, we highlighted the importance of depressurization-driven movem...
Research progress on the fluid metallogenic mechanism of granitic pegmatite-type rare metal deposits
ZHENG Fanbo, WANG Guoguang, NI Pei
2021, 27(4): 596-613. doi: 10.12090/j.issn.1006-6616.2021.27.04.050
Abstract (1427) HTML (510) PDF (12091KB)(153)
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Strategic rare metals have irreplaceable important use to emerging industry development. Granitic pegmatite is the main source of rare metals, and their fluid characteristics and metallogenic mechanism are hot topics. This paper mainly focuses on fluid properties and metallogenic mechanism of granit...
Seismogenic, coseismic and postseismic deformation and stress evolution of the 2008 Wenchuan earthquake: Numerical simulation analysis
MENG Qiu, GAO Kuan, CHEN Qizhi, HU Caibo
2021, 27(4): 614-627. doi: 10.12090/j.issn.1006-6616.2021.27.04.051
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The 2008 MS 8.0 Wenchuan earthquake occurred in the Longmenshan fault zone, which has complex geological background, strong surface relief, and heterogeneous elastic-viscous structures; however, the seismic risk of the Longmenshan fault zone was underestimated before the Wenchuan earthquake due to t...
Mechanism of the strong earthquake triggered by high pressure fluid in reservoir: A case study of the 5.12 Wenchuan earthquake
MAO Xiaoping, HE Liankang, LIU Jialin, LI Suisui, ZHANG Xueqiang, SU Yuchi, LU Pengyu
2021, 27(4): 628-642. doi: 10.12090/j.issn.1006-6616.2021.27.04.052
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At present, the mechanism of earthquake is still based on elastic rebound theory—Earthquake is caused by the release of elastic energy of rock strata due to fault dislocation. But more and more scholars began to question whether the elastic energy after fault faulting can really reach the huge energ...
Experimental study on the dynamic rupture of coal and rock caused by high-pressure gas
DING Yanlu, YUE Zhongqi
2021, 27(4): 643-651. doi: 10.12090/j.issn.1006-6616.2021.27.04.053
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A special test apparatus has been designed and used to study the effect of high-pressure gas on the deformation and failure of coal and rock. Dynamic ruptures of coal and rock are carried out by gas decompression. The results show that low gas decompression rate only causes deformation of coal speci...
Identifying intergranular pore types by distinguishing between cementation and dissolution of dotted calcite: A case study of the Xinhe Formation sandstones in the Yabrai Basin, China
WANG Jianguo, ZHOU Xiaofeng, TANG Haizhong, WEI Jun, HAN Xiaosong, GUO Wei
2021, 27(4): 652-661. doi: 10.12090/j.issn.1006-6616.2021.27.04.054
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There is still no consensus among researchers about whether intergranular pores in oil-bearing sandstone are primary pores or secondary pores. Distinguishing between cementation and dissolution of dotted calcite can effectively identify intergranular pore types. In this paper, taking the diagenetic ...
Seismogenic fault and it's rupture characteristics of the 21 May, 2021 Yangbi MS 6.4 earthquake: Analysis results from the relocation of the earthquake sequence
WANG Guangming, WU Zhonghai, PENG Guanling, LIU Zifeng, LUO Ruijie, HUANG Xiaolong, CHEN Haopeng
2021, 27(4): 662-678. doi: 10.12090/j.issn.1006-6616.2021.27.04.055
Abstract (1341) HTML (756) PDF (21764KB)(85)
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According to China Earthquake Network Center (CENC), the MS 6.4 Yangbi earthquake struck northwestern Yunnan Province on 21 May, 2021 at 21:48(Beijing time). Figuring out the seismogenic fault and source rupture characteristics in time can provide a key basis for understanding the dynamic conditions...
The strong activities of the Namula fault zone in the eastern Himalayan syntaxis since Pliocene, constraints from thermochronological data
TU Jiyao, JI Jianqing, ZHONG Dalai, SUN Dongxia, ZHOU Jing
2021, 27(4): 679-690. doi: 10.12090/j.issn.1006-6616.2021.27.04.056
Abstract (482) HTML (147) PDF (14311KB)(53)
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To reveal the strong activities of the Namula fault zone in the eastern Himalayan syntaxis since Pliocene, this paper reports biotite 40Ar/39Ar and apatite fission track ages of 3 rock samples from the Namula fault zone, and quantitatively interpret these ages and the published ages from the adjacen...

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