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Structure Control Characteristics of Polymetallic Deposits in Huanggang-Ganzhuermiao Metallogenic Belt, Inner Mongolia Province

Author: XuYi
Tutor: WangGuoSheng
School: Chinese Geology University (Beijing)
Course: Structural Geology
Keywords: Huanggang-Ganzhuermiao structure control skarn ore deposits hydrothermal deposits very low-frequency electromagnetic method
CLC: P618.2
Type: Master's thesis
Year: 2005
Downloads: 446
Quote: 6
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Abstract


Lying in the southeast of Inner Mongolia province, Huanggang-Ganzhuermiao metallogenic belt is the most important polymetallic belt in Da Hinggan Mountains, which is famous for the gigantic reserves of tin, copper, lead-zinc etc, and most of the deposits are skarn ore deposits or hydrothermal deposits. This thesis is based on predecessors’work, geological investigation, also on a vast amount of geophysical information,rock and ore samples. From the view of regional geologic environment, using such theories and methods as mineralogy, gitology, orefield tectonics etc, and also by means of computer aid data-processing and simulation mapping and so on, the author emphatically studies the relations between structures and strata, magamatites, or metallogenesis of several representative ore field, explains the regional structural frame, and summarizes the regulations of mineralization belt and the characteristics of the structural metallotect characteristic of skarn ore deposits and hydrothermal deposits. Based on the above-mentioned study, the following conclusions are drawn:　1. Huanggang-Ganzhuermiao metallogenic belt is controlled by deep-large faults belt towards northeast direction,while the shape and occurrence are controlled by secondary structure which towards northwest, northeast or east-west direction. The mineralization mainly occurs in the Permian system and the minerogenetic matters originate from the structure-magamatites occurring in Stage of Yanshan. 2. The metallotect characteristics of skarn ore deposits is the vein ore bodies controlled by exocontact folds combined with faults, belonging to the type of exocontact of magmatic body. The characteristic of the mineralization presents both fissure filling and hydrothermal replacement. The ore bodies or the mineral veins always occupy the hinge zone of the fold or the tensile parts of the accompanying faults. 3. The metallotect characteristics of hydrothermal vein deposits is the vein ore bodies strictly controlled by faults, distributed spatially along the faults. The intersection points of different direct faults or the occurrence variation place of faults are the favorable position of metallogenesis. 4. Result show that it is an effective method using VLF-EM and EH4 in studying structure control characteristics of buried ore.

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Metal deposit ( Zonglun,)
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