Metallogenetic Series And Exploration Prediction In The Taipingling-Wandashan Menerogenetic Zone Of Heilongjiang

Geological prospecting has entered into the stage of theoretical exploration mainly by the indirect deduction rather than facing the outcrops directly. Geoanomaly-based mineral resource prediction is one of the new theories suggested by Chinese geologists for the metallogenic prognosis to fulfill the urgent needs of mineral prospecting in the new century. The philosophy of this new method is to study and contour the geoanomalies with different proportions and types utilizing the multidisciplinary information, and nonlinear scientific and high-tech information processing technologies such as GIS platform, supervised by the thoughts of geoanomaly associated with mineral resources, so as to approaching the industrial ore body gradually.Wandashan-Taipingling area located in the southeast of Heilongjiang is the most important polymetallogenic zone of the province. Covered with forests and thick Quarternary sediments in the most of the area, this metallogenic zone still has high patential for the geological prospecting when one noticed that the geological works are not enough because few rocks outcropped. The research on the metallogenic prognosis are badly need for this area. This work summarized the metallogenesis of the noble and nonferrous mineral deposits, and found that main mineral deposits series in the area were composed of porphyry-, skam-, hydrothermal, and magmatic-immiscibility-injection types. The representatives include Sipingshan and Xianfengbeishan Au deposits, Yuejinshan and Yanghuidongzi Cu deposits, Wuxing Cu-Pd-Cu-Co-Ni deposits, Sishanlingchang Ag-Au deposits. On the basis of comprehensive collections of the geological information of Wandashan-Taipingling polymetallogenic zone, this work conducted the metallogenic prognosis for this area utilizing the GIS platform supervised by the theory of geoanomaly-based mineral resource prediction. The outcome and methodologies of the thesis has been submitted.This work contoured 14 anomalies of grade one, 11 anomalies of grade two, and 32 anomalies of grade 3 for the total five maps. Dalomizhengongshe map has 1 anomaly of grade two, 4 anomalies of grade three. 9 anomalies of grade one, five anomalies of grade two and five anomalies of grade 3 were discovered in the Hualinzhen map. The work contoured 3 anomalies of grade one, 3 anomalies of grade two and 10 anomalies of grade three. 1 anomaly of grade two and 11 anomalies of grade three distributed in the Jidong map. Zhenbaodao map is of 2 anomalies of grade one, 1 anomaly of grade two and 2 anomalies of grade three. Rock gold ore has been discovered in the IAuAg1 target region of Zhenbaodao map predicted by this work. The scale of the ore body of the predicted IIAu1 anomaly has been increased and the Cu-Mo ore has been found in the outer region of the known Au-Ag deposit during the conduction of the project. The prospecting scope of the predicted target region is well for supervising the geological exploration. We propose that the verification work could be conducted in these predicted target regions.