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2015 Vol. 2, No. 4
Published: 2015-04-20
 
1 Achievements and Significance of Lead-Zinc Exploration in Zhangwei-Wuzhishan Area of Guizhou Province
TAN Hua, CHEN Guo-yong, ZHAO Zheng, LU Guang-yan, ZHOU Jian-bo
In this project, we selected lead and zinc as the main exploration target, and the working area located in concentration zones of lead-zinc deposits from Zhangwei to Wuzhishan. On the basis of synthetic study, using the integrated geological and geophysical methods, combining with drilling and tunneling projects, the Nayongzhi deposit of Wuzhishan area and the Shuidong deposit of Zhangwei area have been explored. The prospecting effect was quite good that we estimated 333+334 lead zinc metal resources 2,156,500 tons, in which 333 lead zinc resources 520,300 tons. On these bases, we established the prospecting model of lead-zinc deposits in Wuzhishan area, forecasted that the prospecting area distributed in Shayan, Lishuiyan, Narun and Yujiaba of Wuzhishan area, Yizekong of Zhangwei area, Damachang and Yantang of Guohua area; and proposed that these area were worth of further exploration. After the late stage exploration, 3 medium mines were constructed, and local residents’ income and local government’s financial revenue were increased. This project has economy and social significance to Wumengshan poverty area.
2015 Vol. 2 (4): 1-7 [Abstract] ( 353 ) RICH HTML PDF (3440 KB)  ( 837 )
8 Main Progress and Achievements of Bauxite Mineral Prospective Survey Project of Fusui-Chongzuo District,Guangxi
DENG Jun, CHEN Yue, HUANG Hong-wei, LIANG Yu-ping, HE Hai-zhou, CHEN Sheng,WU Tian-sheng, YANG Zhi-qiang, WEI Fang, LUO Li-ying
In this project, we discovered a new accumulation type bauxite source bed of early Carboniferous in Longzhou district, and proposed that there were at least two metallogenic epochs of accumulation type bauxite source beds in Guangxi which were early Carboniferous and late Permian. We tried to search for ancient weathering crust sedimentary bauxite by using the high density resistivity method of prospecting effectiveness test work. We submitted 4 newly discovered mineral lands, and figured out 52 891.5 kilotons of bauxite resources (3341). We redefined the regional stratigraphic lithology and facies characteristics, and summarized the bauxite deposits (occurrences) temporal and spatial distribution characteristics, controlling ore-forming geological conditions, metallogenic regularities and prospecting criteria. We established the regional metallogenic model and prospecting model, delineated 5 metallogenic prospective areas and determined 6 prospecting target areas. In addition, we forecasted the prospecting potential of bauxite in the Fusui-Chongzuo district,Guangxi. All these progress and achievements provide fruitful basic materials and beneficial reference for further geological survey, mineral exploration and development.
2015 Vol. 2 (4): 8-12 [Abstract] ( 401 ) RICH HTML PDF (5118 KB)  ( 1898 )
13 The Main Progress and Achievements on Comprehensive Research of Geological Structure along the Dali-Ruili Segment of the Pan-Asia Railway Network in Yunnan, China
MAO Xiao-chang, WU Zhong-hai, LI Gui-shu, YIN Fu-guang
For solving engineering geological problem along the Dali-Ruili segment located in western Yunnan of Pan-Asia railway network, and getting through the important strategic channel between China and southeast Asia as soon as possible, the comprehensive geological structure research team finished the 1∶25 000 geological map and engineering geological map covering the Dali-Ruili railway based on the 22 sheets 1∶50 000 geological maps from regional geological surveying work along the railway. From a multidisciplinary perspective,the team systematically identified and evaluated the basic geological and engineering geological conditions of the railway construction, the type and distribution of geological disaster, the activity of the main fault zones and their effects on railway engineering and the engineering stability of the Gaoligong Mountains section, etc.. The excellent geological work provides an important support and geological safe guard to the route selection, design and construction of the Dali-Ruili railway, and is helpful to reduce the blindness of railway engineering design and construction in the future. This work created a new mode on the combining basic geological survey and major engineering construction in China, and was known as a typical example on the basic geological work in the service of the national major projects construction.
2015 Vol. 2 (4): 13-23 [Abstract] ( 343 ) RICH HTML PDF (7714 KB)  ( 124 )
24 Comprehensive Research on Remote Sensing Monitoring of the National Concentration Zones of the Important Mine
YANG Jin-zhong, QIN Xu-wen, NIE Hong-feng, WANG Xiao-hong, ZHANG Zhi, YANG Qing-hua, HUANG Jie, LI Jian-cun, LIU Qiong, WANG Hai-qing, WANG Jin,ZHOU Ying-jie, JING Qing-qing, CHEN Wei, CHU Yu
Remote sensing monitoring of mine is a basic survey with Chinese characteristics. The theory and the technological system on remote sensing monitoring of mine have been founded tentatively, and the technical regulation on remote sensing monitoring of mining exploration had been formulated between 2006 and 2010. Through a comprehensive study of the remote sensing survey and monitoring results of recent 5 years, some regularity cognations on the condition of the national mining exploration, mining geo-environment and mining programme has been exposed. Remote sensing technology has become one of the important skills in the management of the national concentration zones of the important mine. In addition, the orientations for further research in the field are discussed and forecast.
2015 Vol. 2 (4): 24-30 [Abstract] ( 453 ) RICH HTML PDF (3035 KB)  ( 1544 )
31 Characteristics of Hydrogen, Oxygen Isotopes and Trace Elements in Surface Water of Aba Area in Sichuan
SHI Ze-ming, WANG Xin-yu, NI Shi-jun
Aba is a region with high altitude, located in the northwest of Sichuan, and at the junction with Qinghai and Gansu provinces. Aba is rich in surface water resources that the Yangtze River and Yellow River both flow across this area. Through systematically sampling the rivers water (76), wells water (7) and streams (8), and analyzing the contents of 18O, D and trace elements in water, we revealed that ① The contents of D and 18O in river water of Aba were significantly higher than streams, wells and tap water. Linear correlation analysis indicated that the enrichment of 18O was closely related to the dissolution of sulfuric minerals; ② There was obvious hydraulic link among well water, tap water and streams in Aba; ③ In Aba, isotopic composition of oxygen and hydrogen in river water of Yellow River system were closing to that of Yangtze River system, which was due to the same rainfall source at the same area; ④ The trace elements of surface water were quite close with the surrounding rocks, with the characteristics of high concentrations of Ba, Zn, Cr, and low concentrations of As, Pb, Cd, which indicated that the trace elements in surface water was mainly affected by the geological background.
2015 Vol. 2 (4): 31-35 [Abstract] ( 350 ) RICH HTML PDF (1620 KB)  ( 516 )
36 Potential Evaluation and Demonstration Project of CO2 Geological Storage in China
GUO Jian-qiang, WEN Dong-guang, ZHANG Sen-qi, XU Tian-fu, LI Xu-feng,DIAO Yu-jie, JIA Xiao-feng
From 2010 to 2012, Center for Hydrogeology and Environmental Geology Survey, China Geological Survey launched a project “CO2 geological storage potential and suitability evaluation and demonstration project in China”. In this project, basing on the geological condition in China, we have established evaluation index system and technical methods of CO2 geological storage potential and suitability. The CO2 geological storage potential and suitability of main basins have been evaluated;series of 1∶5 000 000 regional maps and atlas of main sedimentary basin in China have been compiled; potential targets area for CO2 storage have been delineated; techniques and methods of site selection, exploration and evaluation on CO2 geological storage in deep saline aquifers have been established.Furthermore, cooperating with Shenhua Group, we have successfully launched the first coal-based CO2 geological storage demonstration project in deep saline aquifers in Ejin Horo County of Ordos City within Inner Mongolia Autonomous Region.On these bases, the preliminary basic theories, techniques and methods of CO2 geological storage potential and suitability evaluation in China have been established
2015 Vol. 2 (4): 36-46 [Abstract] ( 381 ) RICH HTML PDF (6104 KB)  ( 584 )
47 Main Research Achievements of Agro-geological and Eco-geochemical Research in Pearl River Delta Economic Zone, Guangdong Province, China
DOU Lei, DU Hai-yan , HUANG Yu-hui, LAI Qi-hong , YOU Yuan-hang
Soil heavy metal pollution is one of the main environmental problems in Pearl River Delta Economic Zone. It directly threatens the stability of regional ecosystem and food safety, and has profound influences on economic sustainability, especially for sustainable agriculture and people′s health. Consequently, soil environment quality and food safety in this region have received extensive attention from all around China. Based on multi-purpose regional geochemical survey, regional eco-geochemical assessment, local eco-geochemical assessment and comprehensive appraisal, the eco-geochemical survey and assessment in Pearl River Delta Economic Zone of 47 954 km2 (including the area of 10 m depth in shallow inshore waters) was completed. Samples of soil, sediments of intertidal and major rivers in the region were collected in accordance with the two-layer grid method. It is the first time to study the geochemical characteristics of the Pearl River Delta region, and totally 71 elements and indicators for soils and sediments were determined. On the basis of the regional survey, the samples of rock, soil, sediment, dust, water, biology, human hair and other types of media samples in significant zone were systemic collected. The composition, distribution characteristics, sources, impact mechanisms and ecological security, migration and transformation process of toxic elements and nutrition elements in significant zone were investigated through case research and general analysis. According to the characteristics of the area, we firstly carried out the study of geochemical character of delta formation evolution and formulation of environmental quality standards for soils in the Pearl River Delta Area.
2015 Vol. 2 (4): 47-55 [Abstract] ( 452 ) RICH HTML PDF (5818 KB)  ( 492 )
56 Main Achievements in Regional Geological and Mineral Prospective Survey of 1∶50 000 in Southern Beitinggong of Gaize County, Tibet
MA De-sheng, XIONG Xing-guo, WU Tao, LI Yue-sen.
The regional geological and mineral prospective survey project of 1∶50 000 in southern Beitinggong of Gaize County, Tibet has achieved main achievements as follows: ① A new stratigraphic unit, the Upper Triassic Galanong Formation, was identified, and the Upper Jurassic Karinuo Formation was redefined according to evidences of paleontological fossils. ② The U-Pb age of zircons from the diorite was (120±0.7) Ma, and the age from Lower Cretaceous Meiriqiecuo Formation was (121.9±1.6) Ma, which suggested that the Early Cretaceous was the most important period of volcanic activities in the survey area, and the volcanic activities were quite close with the subduction of Bangongco-Nujiang ocean.
2015 Vol. 2 (4): 56-61 [Abstract] ( 303 ) RICH HTML PDF (2271 KB)  ( 528 )
62 The Main Research Achievements of Geo-environment Survey and Regionalization in Jiangsu
ZHANG Li, HUANG Jing-jun, MIAO Shi-xian
Research on division of geoenvironment is of great significance to protect the geoenvironment effectively and to perform the functions of the geo-environment protection and management.This proposal is not only the pilot project for nationwide geo-environment classification carried out by Planning Division of Ministry of Land and Resources, but also an essential part of the sustainable geo-environment protection for Jiangsu Province. It was conducted as first maturely demonstration project, and therefore the implementation of this proposal will provide the fundamental principles for any further researches.Basing on the analysis of concept and connotation of geoenvironment regionalization, we established the ideas of geoenvironment regionalization in Jiangsu which included a comprehensive division and 6 specialized divisions. Considering the natural and social attributes of the geo-environment, we established the evaluation index system for 6 specialized divisions, i.e., geological disasters (prevention), mine geological environment (protection), mountain resource conservation, geological heritage protection, groundwater pollution prevention, and soil pollution prevention. The evaluation of 6 specialized divisions was carried out by the space analysis module of MapGIS.The geoenvironment comprehensive division had been done based on the results of specialized divisions. The first order of comprehensive geological environment division is oriented to the geological environment problems, and the second order of division is oriented to the geological environment function. This paper offered geoenvironmental protection plan proposals from two aspects of geological resources security and geological environmental safety.
2015 Vol. 2 (4): 62-70 [Abstract] ( 358 ) RICH HTML PDF (4536 KB)  ( 275 )
71 Research on Risk Evaluation of Large Landslides in Chongqing City
CHEN Xiao-lan, HONG Bo
In this paper, distribution, material structure, formation, stability and characteristics of the large landslides in Chongqing city were analysed, while the risk evaluation model of oversize landslides was established, the probability and risk degree of oversize landslides were determined basing on typical oversize landslides. Combining with the risk evaluation results, risk management strategies and counter measures of prevention and mitigation were proposed according to the characteristics of oversize landslide disasters.
2015 Vol. 2 (4): 71-75 [Abstract] ( 403 ) RICH HTML PDF (1855 KB)  ( 353 )
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