| 遥感图像处理在沂沭断裂带中段预测金伯利岩靶区的应用 |
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| APPLICATION OF LANDSAT IMAGE PROCESSING IN PROGNOSTICATING KIMBERLITE TARGETS IN THE MIDDLE SECTOR OF THE YI-SHU FAULT ZONE |
| The middle sector of the Yi-Shu fault zone is one of the most important areas of primary diamond deposits in China. On the basis of an analysis of the geological structure and geographic features of the region, the author, accord in to the spectral features of the diamond bearing kimberlites in Shandong Province, worked out some computer programs and processed the Landsat image of the middle sector of the Yi-Shu fault zone with the I2PS101 system. Because of reasonable programming , the processing of the Landsat image has enhanced geographic features and extracted some image abnormities in colour and characteristics, which are related to kimberlites. By analyzing the geological and geophysical data from the region, the authors have distinguished six kimberite-related target areas. In the field work, the authors found some carbonatite veins in one of the target areas. By subsequent field verification and petrochemical, REE and heavy placer mineral analysis indicate that the veins are of hypogenic carbonatites. The analysis of heavy placer minerals show that the veins contain some chromian pyropes moissanites and montmorillonites. It is said that in such veins some diamond grains were discovered in the past. For this reason, the authors consider that the carbonatite veins may be an intensely carbonatitized kimberlite. |
| WANG Hai-ping,DENG Chu-jun,QIN Shu-ying.1993.APPLICATION OF LANDSAT IMAGE PROCESSING IN PROGNOSTICATING KIMBERLITE TARGETS IN THE MIDDLE SECTOR OF THE YI-SHU FAULT ZONE[J].Acta Geoscientica Sinica,14(2):127-138. |
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