新疆库鲁克塔格南华纪成矿体系特征

The Nanhua period mineralization system of Kuluketage in Xinjiang

新疆库鲁克塔格地区南华系地层层序十分发育,该区南华系有3次冰川活动的沉积记录;该区与Rodinia超大陆裂解有关的构造岩浆事件发生时限为830～630 Ma;区域内分布的且干布拉克蛭石矿和兴地Ⅱ号铜镍矿床与南华纪的Rodinia超大陆裂解有关;库鲁克塔格地块在南华纪可能是华南板块的边缘块体,它与华南板块上大范围分布的同期火成岩为Rodinia超大陆裂解时地慢柱活动的产物。

Nanhua system are widely distributed in the Kuluketage, Xinjiang. There are three glacier activities in Nanhua system. We suggest that episodes of mantleplume activities between 830 Ma and 630 Ma during the break-up of supercontinent Rodinia within in the Kuluketage. The Qieganbulake apatite-vermiculite deposit and the Xingdi ⅡCu-Ni deposit formed in a Neoproterozoic continental rift setting, possibly related to mantle plume activities that led to the breakup of the Rodinia supercontinent. Kuluketage belt that was likely derived from northern Yangtze craton. The Qieganbulake and Xingdi Cu-Ni sulfide-bearing intrusions, along with coeval regional plumerelated mafic dykes, are interpreted to be genetically related to the same period south China mantle plume rocks.