Question Why do scientists think the Grand Canyon was once covered by an ocean?(1 point) Responses 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. Seawater has been found seeping up through the canyon floor. Seawater has been found seeping up through the canyon floor. 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. Only an ocean would have the strength to erode the rock forming the Grand Canyon.
Scientists think the Grand Canyon was once covered by an ocean because the sedimentary rock type forming layers of the canyon formed under the sea, seawater has been found seeping up through the canyon floor, the Grand Canyon is located along coastlines that likely flooded, and only an ocean would have the strength to erode the rock forming the Grand Canyon.
Scientists think that the Grand Canyon was once covered by an ocean for several reasons:
1. The sedimentary rock type forming layers of the canyon formed under the sea. This means that the rocks were initially deposited in a marine environment, indicating that the area was once underwater.
2. Seawater has been found seeping up through the canyon floor. This suggests that there may still be connections to ancient underground reservoirs of seawater, further supporting the idea that the area was once submerged.
3. The Grand Canyon is located along coastlines that likely flooded. The geological features and proximity to ancient coastlines indicate that the area was at or near the ocean at some point in the past.
4. Only an ocean would have the strength to erode the rock forming the Grand Canyon. The immense size and depth of the Grand Canyon suggest that it was formed by a powerful erosional force, which is typically associated with large bodies of water like oceans.
Overall, the combination of sedimentary rock layers, seeping seawater, coastal features, and the erosional power required to create the Grand Canyon leads scientists to believe that it was once covered by an ocean.
Scientists think the Grand Canyon was once covered by an ocean for several reasons. Firstly, the sedimentary rock type that makes up the layers of the canyon formed under the sea. This means that the rock was deposited and compressed over time by the weight of the water, indicating the presence of an ocean.
Additionally, evidence of seawater seeping up through the canyon floor has been found. This suggests that there is a connection between the canyon and the ocean.
Furthermore, the location of the Grand Canyon along coastlines that likely experienced flooding supports the idea of an ancient ocean covering the area. This is because coastlines are often susceptible to rising sea levels and flooding, which could have resulted in the formation of the canyon.
Lastly, the size and depth of the Grand Canyon indicate that only an ocean would have had the strength and power to erode the rock over millions of years. The force of ocean waves and currents would have been able to slowly wear away the rock and carve out the canyon as we see it today.
Overall, the combination of sedimentary rock type, evidence of seawater seepage, coastal location, and the scale of erosion all point to the conclusion that the Grand Canyon was once covered by an ocean.