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Wang J.-F.,Remote Sensing Application Institute of ARSC
Northwestern Geology | Year: 2013

This paper summarized remote sensing technology method suitable for the iron ore of sedimentary metamorphic type in arctic-alpine high altitude localities through mineralized alteration information extraction of remote sensing from Aster image and remote sensing interpretation from Worldview- II image. Based on the background analysis of iron ore mineralization in the ore concentration area, and in view of Aster and Worldview-TJ image features and major types of iron ore mineralization, the technology and method for mineralized alteration information extraction of remote sensing mainly focusing on iron stained anomaly is put forward. Meanwhile, its reliability is analyzed. The author made full use of the advantages of the high-resolution images from Worldview- II and interpreted the metallogenesis including lithology, structure, intrusive rock, particularly the ore body and mineralized zone, which are much clearer than previous images. Prospecting model of iron ore remote sensing is set up through remote sensing analysis of ore-controlling conditions. Four iron ore mineralization belts except the known iron ore deposit are delineated. The comparison analysis is reliable between part of the field confirmation and the known mineral deposit. It is concluded that Laobing-Zankan ore concentration area boasts good prospecting potential through the remote sensing study of iron ore minerogenetic condition in the Laobing-Zankan ore concentration area.

The exploitation of mineral resources has much influence on the surrounding ecological environment. By interpreting materials collected by DEM, IKONOS, QUICKBIRD, WORLDVIEW-2 and SPOT-5, a study was implemented on geological environment status and development trend concerning metallogenic belt and mining concentrations. The result showed that coal mine exploitation holds the largest proportion in terms of land damage and occupation, followed by brick clay, sand and so on. Moreover, areas shared by coal mining is expanding rapidly. Geological disasters caused during mining exploitation are mainly collapsed pits, splits, cracks (potential), debris flow (potential), ground collapse (potential), and so on. Forms of environmental pollution are water pollution, dust pollution and tailings pollution, among which water pollution is particularly serious. Treatment and controlling measures were given on the basis of study results.

Shen H.,China National Offshore Oil Corporation | Qin C.,China National Offshore Oil Corporation | Wang D.,China University of Mining and Technology | Zhang F.,Remote Sensing Application Institute of ARSC
Shiyou Xuebao/Acta Petrolei Sinica | Year: 2010

Based on the analysis of log responses to coal bed comprehensively and the extraction of log information profoundly, three method for distinguishing coal beds were proposed, including the logical decision, cluster analysis and electrofacies cobweb method. The logical decision method can be used to distinguish coal beds in the non-cored hole on the basis of the logging characteristics of coal bed showing in cores. The cluster analysis method implies that the principal components of logging curves are analyzed firstly to find out several logging traces that have great contributions for distinguishing coal beds (the cumulative contribution rate should be over 85%). Then these logging traces are analyzed by the cluster analysis method. The coal beds in the non-cored hole can be distinguished, according to the property of coal bed showing in cores. The electrofacies cobweb method is based on the log parameters of different lithologic strata on a cobweb figure and respectively build the standard cobweb figures for different lithologic strata. Then, the cobweb figures of the standard lithologic strata are compared with the cobweb figures of the suspected coal beds to distinguish the real coal beds. The credibility of the distinguished coal beds can be semi-quantitatively analyzed. The comparison of the half-amplitude thickness and 1/3 amplitude thickness of logging trace with the true thickness of coal bed shows that the 1/3 amplitude thickness of logging trace is proximal with the true thickness of coal bed and can be regarded as thickness of the distinguished coal bed.

Jin M.-S.,Remote Sensing Application Institute of ARSC | Wang H.,Remote Sensing Application Institute of ARSC | Zhang S.-P.,Remote Sensing Application Institute of ARSC
Northwestern Geology | Year: 2014

Because of the harsh natural conditions and poor traffic conditions in West Kunlun, less geological work has been conducted in this area. This paper makes use of the high resolution remote sensing data in light of its advantages to carry out remote sensing survey, first analyzed the metallogenic geological conditions in the study area, and then established the interpretation marks of high resolution remote sensing in the mineralized zone. Besides, the ferric contamination anomaly has been extracted. Combining with field survey, Heiqia iron mineralization was found, which will provide new clues in terms of geological prospecting. According to its geological characteristics of remote sensing, a remote sensing geological prospecting model has been established and will provide the basis for future remote sensing metallogenic belt in West Kunlun to find similar minerals. The mineralized zone is an extension of the iron polymetallic deposits in the south-many Fe-Cu-Pb-Zn-Au mineral deposits discovered in West Kunlun. There is greater prospecting potential toward southeast area, and the Heiqia iron mineralization is expected to become an iron polymetallic mineral deposit.

Fan Y.-H.,Remote Sensing Application Institute of ARSC | Fan Y.-H.,Northwest University, China | Qu H.-J.,Northwest University, China | Wang H.,Remote Sensing Application Institute of ARSC | And 3 more authors.
Geology in China | Year: 2012

This paper deals mainly with sedimentary media environment of Late Triassic epoch in the middle part of western Ordos Basin through identifying the corresponding relationships between trace element compositions and sedimentary media environment on the basis of analytical results of some special trace elements such as Sr, Cu, Ba, U, Ti, V and Ni which are sensitive to sedimentary media environment. The results of the study show that the sedimentary media environment of Late Triassic epoch from Chang-9 to Chang-7 was warm humid climate in general and tended to become increasingly warm and humid in upward direction, indicating the brackish water phase of the freshwater environment with a slight increase in salinity of Chang-7. The redox condition from Chang-9 to Chang-8 was normal, while that of Chang-7 became anoxic. The vertical variation of water column stratification is not obvious from Chang-9 to Chang-7.

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