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Journal of Earth Science 1995年第1期14卷 97-106页

作者： Zhao Pengda(Faculty of Earth Resources,China University of Geosciences, Wuhan 430074)Wang Jinggui Rao Minghui Li Haochang(Department of Geology, East China College of Geology, Fuzhou 344000)

geological anomaly is a geological body or geological body combination different from its surroundings in composition, structure, or genetic sequence. If there is a value (value interval ) that works as a valve representing the background field, exceeding or lower than the valve value,it is called a geological anomaly. geological anomalies can be divided into high geological anomaly and low geological anomaly .The former shows the area that is more complex in composition, Structure or genetic sequence than its surroundings; while the latter just gives an opposite indication, i. e. much simpler. According to their distribution and delimitation markers, geological anomalies can be classified into (1)global geological anomaly; (2)regional geological anomaly; (3) local geological anomaly; (4) minor geological anomaly and (5)micro-geological anomaly .The methods for delimiting geological anomalies include (1)crustal elevation-subsidence coefficieat (G value ) determination; (2) geological complex coefficient (C value ) determination; (3) entropy (H value ) determination; (4) geological similarity coefficient (S value ) determination and (5 ) geological correlation coefficient (R value ) determination. As the result of the movements of Eurasian, Pacific and Indian Plates, the Chinese geological anomalies, including 11 regional ones and 32 main local ones, most Paleozoic in age, are distributed in strip on the margin or the outer and inner folded zones in the east and west arcs of the block symmetric arc tectonic system (BSATS), which controls the distribution of various minerals in China. Thus, geological anomaly theory is of great significance in searching for large, super-large and very large ore deposits.

关键词： geological anomaly delimitation of geological anomaly distribution of geological anomaly block symmetic arc tectonic system genetic analysis metallogenic analysis.

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Theory of geological anomaly in Remote Sensing

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Journal of China University of Geosciences 2001年第2期12卷 108-112页

作者： Chen Jianping Zhao Pengda Ding Huoping The Institute of High and New Techniques Applied to Land Resources, China University of Geosciences, Beijing 100083 The Institute of High and New Techniques Applied to Land Resources China University of Geosciences

geological anomaly is geological body or complex body with obviously different compositions, structures or orders of genesis as compared with those in the surrounding areas. geological anomaly, restrained by the geological factors closely associated with ore forming process, is an important clue to ore deposits. The geological anomaly serves as a geological sign to locate ore deposits. Therefore, it is very important to study how to define the characteristics of geological anomaly and further to locate the changes in these characteristics. In this paper, the authors propose the geological anomaly based on the remote sensing images and data, and expound systematically such image features as scale, size, boundary, morphology and genesis of geological anomalies. Then the authors introduce the categorization of the geological anomalies according to their geneses. The image characteristics of some types of geological anomalies, such as the underground geological anomaly, are also explained in detail. Based on the remote sensing interpretation of these geological anomalies, the authors conclude that the forecasting and exploration of ore deposits should be focused on the following three aspects: (1) the analysis of geological setting and geological anomaly; (2) the analysis of circular geological anomaly, and (3) the comprehensive forecasting of ore deposits and the research into multi source information.

关键词： geological anomaly remote sensing geology geological field.

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3D modeling of geological anomalies based on segmentation of multiattribute fusion

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Applied Geophysics 2016年第3期13卷 519-528,581页

作者： Liu Zhi-Ning Song Cheng-Yun Li Zhi-Yong Cai Han-Peng Yao Xing-Miao Hu Guang-Min School of Communication and Information Engineering University of Electronic and Technology of China Chengdu 611731 China School of Resources and Environment University of Electronic and Technology of China Chengdu 611731 China.

3D modeling of geological bodies based on 3D seismic data is used to define the shape and volume of the bodies, which then can be directly applied to reservoir prediction, reserve estimation, and exploration. However, multiattributes are not effectively used in 3D modeling. To solve this problem, we propose a novel method for building of 3D model of geological anomalies based on the segmentation of multiattribute fusion. First, we divide the seismic attributes into edge- and region-based seismic attributes. Then, the segmentation model incorporating the edge- and region-based models is constructed within the levelset- based framework. Finally, the marching cubes algorithm is adopted to extract the zero level set based on the segmentation results and build the 3D model of the geological anomaly. Combining the edge-and region-based attributes to build the segmentation model, we satisfy the independence requirement and avoid the problem of insufficient data of single seismic attribute in capturing the boundaries of geological anomalies. We apply the proposed method to seismic data from the Sichuan Basin in southwestern China and obtain 3D models of caves and channels. Compared with 3D models obtained based on single seismic attributes, the results are better agreement with reality.

关键词： geological anomaly multiattributes fusion segmentation 3D modeling

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Fractal invariable distribution and its application in large-sized and super large-sized mineral deposits

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Geoscience Frontiers 2011年第1期2卷 87-91页

作者： Wei Shen State Key Laboratory of geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China

The self-similar is a common phenomena arising in the field of geology. It has been shown that geochemical element data, mineral deposits, and spacial distribution conform to a fractal structure. A fractal distribution requires that the number of objects larger than a specified size have a power-law dependence on size. This paper shows that a number of distributions, including power-function, Pareto, lognormal, and Zipf, display fractal properties under certain conditions and that this may be used as the mathematical basis for developing fractal models for data exhibiting such distributions. The summation method is developed on the basis of fractal models to determine thresholds for Au data in Shandong Province, China. The anomalous area is enclosed by contours which have contour values greater than or equal to threshold （200 × 10^- 9） and contains known large-sized and super large-sized gold mineral deposits.

关键词： Fractal modeling Fractal dimension geological anomaly Gold mineral deposit

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Expert System for Statistical Prediction of Mineral Deposits on Middle and Large Scales

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Journal of Earth Science 1995年第2期14卷 76-83页

作者： Zhao Pengda Hu Guangdao Li XinzhongFaculty of Mineral Resources, China University of Geosciences, Wuhan 430074

The expert system for statistical prediction of mineral deposits on middle and large scales takes the system of scientific exploration theories, criteria and methods proposed by Professor Zhao Pengda as the field expert knowledge. At present the developed system focuses on two aspects: synthetic exploration and quantitative exploration. Among the three basic theories for the prediction of deposits, it highlights the applications of seeking anomaly theory. This system is characteristic in the determination of geological background, the study of geological anomalies and the delineation of geological background, the study of geological anomalies and the delineation of mineralization anomalies. The system combines closely the knowledge base, method base and database .integrates the input and output information of multi - sources and mul-ti - variables , data , graphs and imagine processing system and inquiring system as a whole . So the system can meet in general all kinds of demands in statistical prediction of mineral deposits . Since the statistical prediction of mineral resources is a kind of systematic engineering pro ject , a further study should be carried out on the fields of theoretical exploration and ster eo - exploration on the basis of unceasingly perfecting the above-mentioned fields in order to establish a comprehensive intelligent system for scientific exploration , to provide new methods , new techniques and new ideas for fast prospecting appraisal of mineral resources .

关键词： statistical prediction of mineral resources expert system scientific explora-tion geological anomaly expert system of cooperation type.

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"Three-Component" Digital Prospecting Method: A New Approach for Mineral Resources Quantitative Prediction and Assessment

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Journal of China University of Geosciences 2004年第3期15卷 245-252页

作者： ZhaoPengda ChenJianping ChenJianguo ZhangShouting ChenYongqing ChinaUniversityofGeosciences Wuhan430074China SchooloftheEarthSciencesandResources ChinaUniversityofGeosciencesBeijing100083China InstituteofMathematicalGeology ChinaUniversityofGeosciencesWuhan430074China ChinageologicalSurvey Beijing100073China

Three-component' method consists of three close-connected aspects: geological anomaly, diversity of mineralization and mineral deposit spectrum. All these three concepts are not new separately, but it is a new approach to combine these three aspects in one single concept for quantitative mineral resources prediction and assessment and it is also the first time to conduct a more detailed study in each aspect. Investigation and clarification of geological anomalies, diversity of mineralization and spectrum of mineral deposits are realized by digitization and quantification of ore forming controlling factors, ore-existing symbols or marks, characteristics of mineralization and regulation of ore-genesis and laws of distribution. These procedures lead to construction of a 'digital model' for mineral resources prediction and assessment.

关键词： three-component' method geological anomaly diversity of mineralization spectrum of mineral deposits.

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Application and Analysis of Mine Radio Wave Perspective Method in Detecting geological Abnormal Area of Working Face

Application and Analysis of Mine Radio Wave Perspective Meth...

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作者： Weina JIANG China Coal Technology Engineering Group Chongqing Research Institute

If there are geological anomaly areas in the coal seam,such as fracture structures,collapse columns and mined-out areas rich in water,electromagnetic waves will absorb,reflect and refract when passing through the coal seam,then this structure will cause the loss of electromagnetic waves in energy,so that the received energy will be significantly attenuated,resulting in perspective anomalies,which can also be called shadow *** there are geological anomalies,the attenuation coefficient is larger,whereas the attenuation coefficient is *** practical application shows that according to the characteristics of the coal mine,appropriate instruments and methods are adopted,appropriate attenuation coefficient values are selected,and relatively strong attenuation abnormal areas are found in the detection range of the working face pit penetration,which provides technical support for the next working face mining,scientifically guides the production,and ensures the safe mining of the working face.

关键词： geological anomaly Radio wave perspective Attenuation

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"Three-Component" Digital Prospecting Method: A New Approach for Mineral Resources Quantitative Prediction and Assessment

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Journal of Earth Science 2004年第3期 6-13页

作者： Zhao Pengda Chioa University of Geosciences, Wuhan 430074, China Chen Jianping School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China Chen Jianguo Institute of Mathematical Geology, China University of Geosciences, Wuhan 430074, China Zhang Shouting School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China Chen Yongqing China geological Survey, Beijing 100073, China

Three-component" method consists of three close-connected aspects: geological anomaly, diversity of mineralization and mineral deposit spectrum. All these three concepts are not new separately, but it is a new approach to combine these three aspects in one single concept for quantitative mineral resources prediction and assessment and it is also the first time to conduct a more detailed study in each aspect. Investigation and clarification of geological anomalies, diversity of mineralization and spectrum of mineral deposits are realized by digitization and quantification of ore forming controlling factors, ore-existing symbols or marks, characteristics of mineralization and regulation of ore-genesis and laws of distribution. These procedures lead to construction of a "digital model" for mineral resources prediction and assessment.

关键词： three-component" method geological anomaly diversity of mineralization spectrum of mineral deposits.

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