The Lancang On Allows Copper Metal Exploration Area Information Mineralization Positioning Forecast

Since the reforming and opening to the outside world, with the rapid development of economy, it is growing day by day in demanding for mineral resource in our country, but the resource guarantee degree of major kinds of mineral resource in our country is quite low, and the supply situation of mineral resource is very severe, so it has already severely threatened the economical security and the social stabilization of our country. To change this situation, we must depend on the improvement and advance of the progress in science and technology, and research actively and find out the new and more effective mineral resource prognosis system combining the modern metallogenic prognosis theories and high-tech, to advance whole the level of the mineral resource survey and resource estimation and the ability of scientific prognosis of our country, to search and find alternative mineral resource varieties, to increase the reserve of mineral resource, to provide the sufficient resource guarantee for the secure, highly effective and continual economical development of our country.The reserch based on a project named< The polymetallic deposits potential evaluation and exploration analysis of Pb and Zn in the region of Dian-Chuan-Qian>. After collecting and consulting so many data and information on target area for months, we obtained quite a lot multi-source geological information. We analyzed and concluded the information, and formed a comprehensive recognition of background and main factor that controls the mineralizing, and build an mineral-exploration model based on target overall data initially. We also further study the advanced mineralizing and exploring theories in domestic and abroad, and due to the insufficient and imprecise data, we use BP neural network to predict the mineralizing possibility, and results turned out to be stable and favorable. After our research, we could draw the conclusion follows:1.Geological information:The targeted Exploration area located at east fold and wendong-fubang, and the main formation consisted of metamorphic rock of LanCang group of Proterozoic, and cap-rock was Mesozoic strata, and wildly spreaded granite which framed in Indosinian and late Yanshanian period. During the process of regional metamorphism and invading of magma, as well as the minerallizing process of Sn (W),Cu and Zn. There is an main fault which direction was northeast to southwest, and cut by a sub-fault which was northeast to southeast, and regional Crosscutting relationship was opposite and take place within the granite rock, and exomorphiczone dominate the mineralizing of Sn (W),Cu and Zn. Besides, the bangwei horizontal-naruan northeast-southwest fault is an important zone to control the mineralizing of Cu. The nouthwest fault within the granite with was formed during the late Yanshanian period played an important role in mineralizing of Sn (W). 2.Remote sensing information:A linear structure were developed in the exploration area, among which NE and NW direction linear structure were so clearly, and dominate the development of topography in this area which was a new, and happened with each other which has a characteristic of conjugation. Ring tectonic structures reflected the fracturing activities, and the existence of ring tectonic structures were found in nawei reservior, weibang village, naruan and hongmao mountain. In such area, the linear tectonic structures were well-developed which is an Favorable positions for mineralizing.3. geophysical information:Geophysical exploration has gain 17 abnormal site. There is oneⅠ-abnormal which has exploration value, and fourⅡ-abnormal which has certain exploration value, and 4Ⅲ-abnormal which is unclear, as well as eightⅣ-abnormal which has no exploration value. All of the electric abnormal site located at huimin Group of langcang, and the region near the huimin groud which is above the granite formation has certain degree of exploration value.4. geochemical information:Adopted geochemical and tectonogeochemical research, we ensure the geochemical background and abnormal of mineralizing elements, and determined the valuable abnormal region and raised the correlation of post-mineralizing abnormal with later tectonic activities, and mineralizing elements has a great characteristic of distincted distribution. For high temperature rock bed within the rockmass, and high-medium temperature rock bed near the contact zones, also the medium-low temperature rock bed in outer rockmass, and Ore-forming elements horizontal distribution phenomenon is relatively obviously.6. Comprehensive information positioning prediction:We discussed the useful and advantage of BP neural network in mineralizing prediction, and reasonably designed network structure and built the mineralizing prediction model based on comprehensive information to quantificat the value of each Exploration area. We also mapped the contour map based on value of each area, and ascertain four targeted sites. Our research has laid an important ground for our mineralogy prospecting works.