【摘要】 加拿大阿巴拉契亚(Appalachian)褶皱带东段,具有类似于加拿大西部科迪勒拉(Cordillera)褶皱带的洋陆汇聚环境,分布有Coxheath等一系列斑岩铜钼矿床,但是其形成时代较老(前寒武纪—泥盆纪),斑岩面型蚀变分布不全,地表多数没有火山岩分布,矿化受断裂控制明显,分布在岩体一侧或断裂带旁;阿巴拉契亚褶皱带东段斑岩铜钼矿特征与科迪勒拉褶皱带斑岩矿床差异较大,造成这种差异的主要原因是两者大地构造演化等方面的巨大差异。更多还原

【Abstract】 The eastern Appalachia( Appalachian) fold belt,Canada,has a similar ocean-continent convergence environment as that of Cordillera fold belt located in the western Canada,a series of cases of porphyry Cu-Mo deposit,such as Coxheath porphyry Cu-Mo deposit,are distributed in this belt. However,the ore-forming age was relatively older( from pre-Cambrian to Devonian),and the porphyry planar alteration distribution is not completely,and no volcanics distributed around the porphyry mass on the surface,and the porphyry mineralization is obviously controlled by faults,the orebodies are located besides the intrusion or within the fault.Therefore,there is a big difference of the porphyry deposit characteristics between Appalachian fold belt porphyry deposits and Cordillera fold belt porphyry deposit,the main reason is resulted from the regional tectonic evolution,magma activity and other factors.更多还原