| The Baishanlinchang is located in the northeast of Heilongjiang Province, northern margin of Xing’an- Mongolia orogenic belts, the northeast section of Wuxing- Xilin-Langxiang iron, Pb and Zn mineralization belt in northwestern of Xiaoxing’anling-Zhangguangcailing polymetallic metallogenic belt. The geological studiedness in research area is lower.The geological survey and mineral exploration work confined to the goal of mining area and the periphery more. In order to find out the mineral resources further, and expand the prospects, in this paper, the geological, geophysical, geochemical and remote sensing and mineral’s 1:50000 integrated information system are analyzed and studied to extract the regional geological, geophysical, geochemical and remote sensing information, and some favorable metallogenic prospect areas are elected to indicate the direction for prospecting work further.The emergence stratum mainly are dongfeng rock group in Neoproterozoic(Pt1d) and Quaternary unconsolidated sediments. The magmatic activity concerned to gold mineralization mainly are Hercynian and Variscan, Indosinian period in the region. The mineralization phenomenon in Hercynian gneissic granite rock mass and Dongfeng rock groups in Neoproterozoic contact site are more obvious through field observation and research, and it is the gold output positions, and the Dongfeng rock group is the main source of gold deposits in the area. Indo-chinese epoch monzonitic granite is forming parent rock of molybdenum ore.Through comprehensive analysis of the hercynian and indosinian period petrological and geochemical characteristics of magmatic rocks in research area, we can come to the conclusion that the Hercynian granite source area is mainly derived from crust, and it is belong to high aluminium K-high calc-alkalic rock series; Indo-chinese epoch granite has the feature of high K, belong to peraluminous shoshonite or K-high calc-alkalic rock series, it may also be influenced by certain late alteration. Trace element characteristics show that both has the feature of arc magma.Geological structure is developed in this area. And it is mainly built of brittle fracture mode and ductile shear zone. the molybdenum mineralization in the area is mainly found in junction of NE and NW faults faults created and the turning of NE faults to nearly EW faults.Characteristics of aeromagnetic anomalies in the area shows that, aeromagnetic anomalies according the study area are divided into 3 abnormal area, and divided into eight aeromagnetic anomalies, in positive and negative anomalies associated areas at the same time, the aeromagnetic anomaly gradient, abnormal plus or minus alternate parts may be affected by the rupture or alteration zone, more conducive to mineralization.Based on the 1:50000 stream sediment data processing and analysis in the area, suggested that the main minerals of prospecting in this area is Au and Mo; Secondly, Cu, Pb, and Zn, etc. On the basis of analysis of metallogenic element anomaly, marking out 866 single element anomalies and 26 combination element anomalies. Element anomalies mainly distributed in the ring structures and the periphery of edge, present a north east string, NW into belt, intersection composite parts of distribution.Combined with Baishanlinchang area integrated geological, geophysical, geochemical and remote sensing, and mineral information, in this paper, A total of marking out four metallogenic prospect areas, one Ⅰ class(class A) metallogenic prospect areas, and three Ⅱ level(class B) metallogenic prospect areas. Combined with prospective area prospecting potential evaluation, finally selected class A and class B 4 forecasting area for prospecting target area. |
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