含磁铁岩的岩栓不规则地分布于关键带的基底以上.Magnetitite - bearing plugs are found erratically from the base of the Critical Zone.在直径约1/2英里的地区的地表上有磁铁岩转石分布.An area about half - a - mile in diameter is surface strewn with blocks of magnetitite....

“磁铁岩”的英语可以翻译为：magnetitite ...