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在加拿大肖得贝里盆地南部山脉,广泛分布有硫化物.在该区的8个不同地点分别采样研究其古地磁史,发现各点的余磁方向均有其特点.将这些余磁方向与当地主要侵入岩的余磁方向作对比,可以分辨硫化物的成因模式. 与硫化矿有关的余磁有三个:第一时期(余磁方向D=270°,J=+70°),或许属于磁性成因,与花岗微文象岩有关.第二时期属于热液成因,相对其他两个时期而言,此地质事件发生
Sulphides are widely distributed in the southern mountains of the Canterbury Basin in Canada, and their ancient geomagnetic history is sampled and studied at eight different sites in the area, and the extraomagnetic directions at each point have their own characteristics. There are three residual magnetizations related to sulphide ores: the first period (the residual magnetic direction D = 270 °, J = + 70 °) may belong to The genesis of the magnetism is related to the granite micro-lithology. The second period belongs to hydrothermal genesis. Compared with the other two periods, the geological event