Geography, 03.02.2020 01:01 maciemarklin79981
The walls of the grand canyon are made of layers of sandstone. a dike cuts across some of the layers. when did the dike form? a) after erosion revealed the canyon wall b) at the same time as the sandstone formed and the canyon was eroded c) after the sandstone formed and before erosion revealed the canyon wall d) before the sandstone formed
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The walls of the grand canyon are made of layers of sandstone. a dike cuts across some of the layers...
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