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How geologist know that shallow seas coverd the central part of north America?
Wiki User
∙ 8y ago
The limestone. It is only deposited in the presence of water. Most of the fossils found are marine animals. There are coal, slate and shale deposits formed from river or shallow lagoons as evidence of shallow water. And the mountains came after because sedimentary rock is laid flat. The mountains forming the Appalachian mountains are very eroded so they must be very old. Of course this is only the simple explanation visit wiki or a library for more info.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoits because the use nutraul atentions to efounet the fardituntions in the subrions and use triditionarys to find out the particail\
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