time-parallel strata 同时岩层
Ever since people had begun to catalog the strata in particular outcrops, there had been the hope that these could somehow be used to calculate geological time.
"从人们开始对地表的特殊岩层进行编目和分类时起，大家就开始期望能够以某种方式利用这些岩层来计算地质年代。
Earthquakes and tsunamis that resulted from the collision could have wrought havoc on the sedimentary record, causing discrete strata to swirl together and completely scrambling time lines.
由于撞击造成的地震和海啸可能对沉积层造成严重的破坏，使得离散的岩层旋转混合在一起并完全打乱地质时间线。
Layer upon layer of different rocks recede down into the Grand Canyon and back through time, until the strata, at the river, revealed some of the oldest exposed rocks on earth.
一层层各种各样的岩石铺叠着一直深入到峡谷之中，直至地层，追逐着时光的变迁，在河床中显露着一些地球上最古老的岩石。
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