多源地学信息数字图像综合技术及在盛源盆地的应用研究

通过图像显示系统,实现了铀资源多种地学信息数字图像的综合处理,其内容包括资料的输入 处理、资料配准和插值处理以及多源地学信息的增强、分解、提取、分类、叠合、复合等处理。 以盛源盆地为样区进行了试验性研究。利用图像的信息增强、叠合技术,研究了试验区的地质 构造环境；利用图像信息的分解、叠合技术,分析了铀、针、钾的分布格局及其地质意义；通过 矿床找矿判据的复合、提取,进行了找矿靶区的初选；来用信息的分类技术,进行了盛源盆地地区铀 资源的总体评价。通过上述计算机信息处理技术,对这个研究程度较高的老矿区,在某些重要地 质问题上,取得了一些新认识,并经野外检验,预测了六片成矿远景地段。 在上述研究基础上,初步建立了铀资源多种地学信息数字图像综合技术系统。

DIGITAL IMAGE INTEGRATION TECHNIQUE OF MULTIPLE GEOSCIENCE INFORMATION SYSTEM & ITS APPLICATION ON SHENGYUAN BASIN

Using computer image integration technique, the multiple geoscience information such as geological, remote sensing, hydtogeological, geophysical and geochemical informations are comprehensively processed The technique consists of the information input, registration, interpolation, and the enhancement, decomposition, abstraction, classification, overlay and combination process procedures. This technique has been tested on Shengyuan Basin. The Geological environment of the basin was studied by image enhancement and overlay technique. It is suggested that the basin was a volcanic centre of central eruption during the late jurassic and was superimposed by polygonal block-faulting during Cretaceous, forming a ring-block model of ore-field structure. The U, Th, K distribution pattern and its geological. significance have been analyzed using the decomposition and overlay technique of image information. It has been pointed out that the above pattern .is. controlled by the stratigraphic-structural factors, esp cially the high-content field of uranium, besides the NE and EW trending faults, the SN trending. fault-system is of great: importance in controlling the distribution of uranium in the region. On the basis of compositing and abstracting the prospecting criteria the target areas have been preliminarily selected. An information classification was used for the general evaluation of uranium resources in Shengyuan Basin With the help of the information procesing technique on computer some new insights about basic geological problem in this previously well-studied region have been obtained. Six promising areas have been selected and tested. Based on the research work mentioned above, a comprehensive technique system of multiple geological information image integration for uranium resource evaluation has been preliminarily established.