论文部分内容阅读
按照Sillitoe的提议,中生代地块向南的漂移物为现在日本西南部内带的假说是可能成立的。其依据为在南朝鲜庆尚盆地内钨(南部)与钼(北部)成矿区的排列顺序与日本西南部内带的一样。Sillitoe还指出,由于钼区的时代为早第三纪,所以日本西南部是晚期从亚洲大陆分离的。如果他的提议是正确的,那么两个分离地区的磁铁矿系列和钛铁矿系列花岗岩的分布模式必然是类似的。日本西南部钨区主要由钛铁矿系列的花岗岩组成,而铝区主要为磁铁矿系列的花岗岩。
According to Sillitoe’s proposal, the drift to the south of the Mesozoic massif is now possible for the hypothesis that the inner belt of southwestern Japan is now within. It is based on the same sequence of tungsten (southern) and molybdenum (northern) metallogenic zones in the Gyeongsang Basin of southern Korea as in the southwestern Japan. Sillitoe also noted that southwestern Japan was later isolated from the Asian continent due to the early Tertiary age of molybdenum. If his proposal is correct, then the distribution pattern of the magnetite series and the ilmenite series of granites in the two separate areas must be similar. The tungsten zone in southwestern Japan is mainly composed of ilmenite series of granites, while the aluminum zone is mainly of magnetite series of granite.