Scientists think the Grand Canyon was once covered by an ocean primarily because the sedimentary rock type forming layers of the canyon formed under the sea. This rock composition, along with fossil evidence and geological formations, indicates that the area was once submerged in ocean waters.
Why do scientists think the Grand Canyon was once covered by an ocean?(1 point) Responses Seawater has been found seeping up through the canyon floor. Seawater has been found seeping up through the canyon floor. The sedimentary rock type forming layers of the canyon formed under the sea. The sedimentary rock type forming layers of the canyon formed under the sea. The Grand Canyon is located along coastlines that likely flooded. The Grand Canyon is located along coastlines that likely flooded. Only an ocean would have the strength to erode the rock forming the Grand Canyon.
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