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在四川省攀枝花一西昌地区六个采样点,采集了二叠纪玄武岩和铝土矿标本,测得的古地磁结果表明,不同点地层的平均磁特征方向是一致的,但其磁极性既有正向的,也有反向的,进一步分析研究提出,磁性方向在NE象限的峨眉山玄武岩是在正极性期形成的。文章还讨论了安宁河断裂两侧地层磁性的某些差异,并提出这些磁特征方向的差异可能是由于构造作用或地层年龄差异所致。
Permian basalts and bauxite samples were collected at six sampling sites in Panzhihua-Xichang, Sichuan Province. The paleomagnetic results measured showed that the average magnetic characteristics of different strata are consistent, but the magnetic polarity Forward and backward, further analysis suggests that the Emeishan basalt with a magnetic orientation in the NE quadrant is formed during the positive polarity. The paper also discusses some of the differences in magnetism on both sides of the Anninghe fault and suggests that the differences in the directions of these magnetic features may be due to tectonic processes or stratigraphic age differences.