山东招远罗山金矿控矿断裂成因,演化及其意义

THE DEVELOPMENTAL HISTORY AND THE SIGNIFICANCE OF LUOSHAN GOLD DEPOSIT ORE-CONTROLLING FAULTS IN ZHAOYUAN, SHANDONG PROVINCE

The result of the study on the geometric features and the arrangemental form of the veins oecured in Luoshan gold deposit shows: that the or-econtrolling faults in the deposit result from the small en-echelon faults developed in Linglong granite acted by. left circle shear stress near eastwest direction. The activities of ore-controiling faults during mineralizakion mainly present horizontal shear. The metaliization is the reflection of multipulisation during the same tectonic-mineralization process. The orebodies are discovered in the places of high angle of the fanlt dip changing from high angle to low on profiles and the ranges near northerneast in orientation of the are-fault on horizontal plane, and they often show the features of en-echelon arrangement, thin out and occur in right, and near equal distance distribution.