作者机构：
[Yanshi XIE; Kaixuan TAN; Zhenping TANG; Yang HU; Chunguang LI; Zhaozhao WANG; Fei YANG; Jianwen YIN] School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
通讯机构：
[Yanshi XIE] S;School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
会议名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)
会议时间：
2014-08-19
会议地点：
昆明
会议论文集名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)论文集
摘要：
South China includes two typical Cathysian Diwa regions (i.e., Southeast Diwa and Kiangnan Diwa regions). The complicated multi-stage tectono-magmatic evolution resulted in the widespread granites, and Mesozoic-Cenozoic rifted basins, as well as NE-NNE and NW trending deep faults, and led to the formation of numerous hydrothermal uranium ore deposits. Fractal analyses and numerical simulation of the spatial distribution of faults, granite bodies and uranium ore deposits with fractal distribution were used to discuss the tectono-magmatic activization and fractal dynamics of hydrothermal uranium mineralization in South China, based on the theories of polygenetic compound and tectonic unit metallogeny. The calculated box counting dimensions of faults from Southeast Diwa and Kiangnan Diwa regions were 1.6800 and 1.5939, respectively, indicating that the faults in the former region are favorable for uranium mineralization. The calculated box counting dimension (D) and perimeter-area fractal dimension (DPA) of the granite bodies emplaced during Precambrian to late Yanshanian periods indicated that the D values increase with the granite outcrop area while DPA values increase with the granite shape complexity, demonstrating the strengthening complexity of tectono-magmatic activization. In addition, the D and DPA values of the granite bodies during the periods of Late Yanshanian, Early Yanshanian and Indosinian were relatively high, demonstrating that they also facilitated uranium mineralization. On the other hand, the calculated values (i.e., 1.0254) of box counting dimension of hydrothermal uranium ore deposits in South China are significantly lower than that of faults, consisting with the low distribution density and enrichment of uranium ore deposits. Our simulated results of Cellular Automata Model show that the fractal dimension values of faults and mineralization increase with time, and the large-scale mineralization occurs when these values reach the critical condition of fractal penetration during the mid-late stage simulation. Overall, the fractal evolution of complicated multi-stage tectono-magmatic activization in the two typical Cathysian Diwa regions produced the fractal distribution characteristics of polygenetic compound hydrothermal uranium deposits in South China.
作者机构：
[Kaixuan TAN; Yanshi XIE; Yang HU; Chunguang LI; Zhaozhao WANG; Fei YANG] School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
通讯机构：
[Kaixuan TAN] S;School of Nuclear Resource Engineering, University of South China, Hengyang 421001 China
会议名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)
会议时间：
2014-08-19
会议地点：
昆明
会议论文集名称：
The 14th Quadrennial Interbational Association on the Genesis of Ore Deposium Symposium(第十四届国际矿床成因协会大会)论文集
摘要：
<正>Sandstone type uranium deposits(STUD)were an important uranium resource in the world.The exploration and exploitation of leachable STUD act an important role in world uranium supply with the develo
期刊：
Applied Mechanics and Materials,2012年229-231:2597-2600 ISSN：1660-9336
通讯作者：
Xie, Y.(xie_yanshi@qq.com)
作者机构：
[Tan, Kaixuan; Hu, Kaiguang; Chen, Liang; Huang, Wei; Wang, Xiucai; Xie, Yanshi] School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang Hunan, China;[Chen, Liang] Post-doctoral Research Station of Mining Engineering, University of South China, Hengyang Hunan 421001, China
通讯机构：
[Xie, Y.] S;School of Nuclear Resource and Nuclear Fuel Engineering, , Hengyang Hunan, China
会议名称：
4th International Conference on Mechanical and Electrical Technology, ICMET 2012
摘要：
A uranium mill tailings, located in Guangdong, was selected for spatial distribution of the radon exhalation rates measured by local static method. The two-dimension surface of radon exhalation rates was established by Surfer using the data of spatial distribution of radon exhalation rates measured at August 14, 2007 to 19 and 21, which was analyzed by fractal method of projective covering. The results show that the two-dimension surface of radon exhalation rates is of fractal structure. The fractal dimension of surface of radon exhalation rates from August 14, 2007 to 19 and 21 are 2.0535, 2.0173, 2.0029, 2.0084, 2.0079, 2.0057 and 2.0034, respectively, which indicates that the complexity of spatial distribution of the radon exhalation rates at 14 and 15 are larger than that of the other days. The phenomenon results from the change of precipitation and temperature, as well as the features of uranium mill tailings, including mineral composition, particle size, radium content, porosity and pore connectivity, etc.
摘要：
In this paper, factor analysis are used to study the early Paleogene paleoenvironmental evolution from the Sanshui Basin, and main conclusions can be obtained as follows: stage I (89.0-73.0m), relatively dry and relatively low temperatures; stage II (73.0-52.5m), warm and humidity of the climate and environment; stage III (52.5-22.5m), the ancient climate conditions change quickly, showing the alternating warm and humidity and dry; stage IV (22.5-0m), prevailing warm and moist climatic conditions.
作者机构：
[Chen, Liang] Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Chen, Liang] U;Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
1st International Conference on Energy and Environmental Protection (ICEEP 2012)
会议时间：
JUN 23-24, 2012
会议地点：
Hohhot, PEOPLES R CHINA
会议主办单位：
[Chen, Liang] Univ S China, Res Stn Min Engn, Hengyang 421001, Hunan, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Change of paleoclimate;Organic matter types;Organic petrology;Sanshui Basin
摘要：
Organic matter types of the Early Paleogene core sediments from the Sanshui Basin were analyzed using organic petrology method. The organic matter is dominated by type II. The type I organic matter intermittently occurs at some intervals and type III organic matter only has occasional occurrence. Organic matter of types I, II1 and II2 should be deposited under arid, drier and humid climate condition, respectively. The uppermost part of the Xinzhuang Formation is characterized by type II1, related to a dry climatic condition. Sub-member A of the Honggang Member is dominated by organic Type II2, sandwiched by Type I and II1, reflecting a prevailing humid climatic condition. Sub-member B is characterized by alternations of types II2 and II1 or I, suggesting rapid fluctuations of humid and arid climatic condition. Sub-member C shows type II1 and I in the lower part and shifts to type II2 in middle and upper parts, suggesting a dry climate condition followed by a prevailing humid climatic condition.
