We thus suspected that the collapsed roof rock from one of the two oldest Yellowstone supereruptions must have melted to form the bulk of the magma that was ejected during the younger Lava Creek catastrophe and smaller eruptions since.
英
美
释义
我们因此猜测,较年轻的克里克熔岩凝灰岩以及之后的小型喷发,岩浆来源是黄石国家公园两个最古老的超级喷发之一,其崩陷的顶层岩熔成了后来喷发出的岩浆。
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