Word: sediments
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Dates: during 1892-1892
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...irregular parts of our continent has much advanced and consequently that of the whole structure, since the mountain regions give the main clues to the great geological movements. They represent the tracts of country which have been formed the longest, parts of them having always remained above water. The sediment washed by the sea from these protruding tracts has formed lime-stone and sand stone about their edges and the strata of these rocks is therefore much thicker here than in regions like the Mississippi basin which have been often submerged. One of the great theories of mountain formation takes...