Refine your search
Collections
Co-Authors
Year
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Wu, Yang
- Advances in Skarn Type Gold Deposits
Abstract Views :180 |
PDF Views:149
Authors
Yang Wu
1,
Mao Kainan
1
Affiliations
1 Resources and Environment Engineering Institute, Guizhou Institute of Technology, Guizhou, Guiyang, CN
1 Resources and Environment Engineering Institute, Guizhou Institute of Technology, Guizhou, Guiyang, CN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 5 (2016), Pagination: 1916-1921Abstract
The distribution of skarn type gold deposit, ore-controlling tectonic setting, ore deposit classification, mineralization alteration zoning and some research methods of ore deposit geochemical are reviewed. Most of skarn type gold deposits located in the Pacific rim, The main ore-controlling tectonic setting are high Angle convergent subduction plate on island arc orogenic belt and craton activation area associated with deep fracture zone. As a major magmatic hydrothermal deposit, Skarn type gold deposits, have the typical phenomenon of ore deposit scale mineralized alteration zoning and the band structure of a single mineral scale. The former has the important instruction significance to guide the prospecting exploration and the latter, which is to understand the evolution of ore-forming fluid and deposit genesis, has great significance. Now, the research for the geochemical characteristic of skarn type deposit gold deposit focuses on mineral phase equilibrium, fluid inclusions, stable isotope and trace element research. The purpose of this paper is to through the analysis of these developments, sets up a study framework of skarn type gold ore deposit.Keywords
Skarn Type Gold Deposits, Metallogenic Tectonic Background, Deposit Classification, Mineralized Alteration Zonation, Geochemistry.- Distribution Characteristics and Present Situation of Heavy Metals in Soil in Different Functional Zones of Zhuzhou
Abstract Views :110 |
PDF Views:94
Authors
Affiliations
1 School of Geosciences and Info-Physics, Central South University, Hunan Changsha, CN
1 School of Geosciences and Info-Physics, Central South University, Hunan Changsha, CN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 3 (2016), Pagination: 1018-1023Abstract
Soil samples were collected from commercial, residential, agricultural and industrial zones in Zhuzhou city, Hunan Province. The concentrations of heavy metals in soils were determined using plasma emission spectrometer and double channel atomic fluorescence spectrometer. And the distribution characteristics of heavy metals in soils were studied in different functional zones. Based on the soil background values, the soil environmental quality and ecological risk were assessed using the single factor index evaluation method, pollution comprehensive index method and inside plum index evaluation method. The results show that the concentrations of heavy metals in soils of Zhuzhou increased with time, which was consistent with the characteristics of industrial and agricultural production in Zhuzhou. It was obvious that the concentrations of heavy metals differed in different functional zones. The concentration of industrial zone was the highest, while agricultural zone was the lowest. Industrial zone was polluted seriously, where As, Cd, Cu, Hg, Zn all exceed the National Soil Environmental Quality Standard. Commercial and residential zones were polluted moderately, where Cd also exceed standard. In the same place of Zhuzhou, the concentration of heavy metals in the upper soil is higher than that in the subsoil. It can be concluded that human activities, especially industrial production are the main reasons for the enrichment of heavy metal elements, thus should strengthen scientific control and governance.Keywords
Soil Heavy Metals, Pollution, Distribution Characteristic, Different Functional Zones, Zhuzhou.- Oxygen Fugacity Studies and Tectonic Evolution of Xintianling Granite in Hunan Province China
Abstract Views :161 |
PDF Views:133
Authors
Affiliations
1 School of Geosciences and Info-Physics, Central South University, Hunan Changsha, CN
1 School of Geosciences and Info-Physics, Central South University, Hunan Changsha, CN