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加拿大安大略省的萨德伯里索有世界“镍都”的美誉,其开采量一直占全球的20%,且埋藏浅、品位高、地域相当集中。人们或许会问,如此得天独厚的富矿究竟是怎样形成的呢? 早在60年代中期,美国著名地质学家狄德茨依据多年的实地考察,首先提出了外因说的科学假设,即认为该矿的形成是基于远古时代一颗特大陨石溅落地球的结果。的确,在萨德伯里一带的地貌中随处可见奇形怪状的坑穴和类似的地质构造,它们通常只有在巨大的外力
Sudbury Harbor, Ontario, Canada has the world’s “nickel capital” reputation, its exploitation has been accounted for 20% of the world, and buried shallow, high grade, very concentrated geographical. People may ask how the bounty of rich ore was formed. As early as the mid-1960s, the famous American geologist Dideritz first proposed the scientific hypothesis of exogenous reason based on many years of site visits, that is, Formation is based on the ancient times a meteorite splashing the earth results. Indeed, grotesque potholes and similar geological formations can be found everywhere in the landmarks of Sudbury, and they are usually found only in large external forces