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The Chesapeake Watershed spans five states and has a rich geological history dating back to the supercontinent Pangaea, about 220 million years ago. The area once consisted of ancient lava beds and lacked the Chesapeake Bay or coastal regions. As mountain erosion occurred and sea levels dropped, the Coastal Plain emerged, made from sediments. A significant meteor impact near Newport News 35 million years ago led to the creation of the Chesapeake Bay through the influx of rivers and ocean waters into the depression formed by the impact.
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The Chesapeake Watershed Covers 5 states.
The red shows the ancient lava beds. The lava bed in the East is from when the continental plates were pressing up against each other and creating the great mountains over 14,000 feet high. There was no Chesapeake Bay or even a Coastal Region.
Think of it this way: LIE school was on the edge of the ocean! LIE School Virginia
LIE School As the ocean sea level went down the coastal plain formed as the great mountains eroded from millions of years of rain and storms. The Coastal Plain is really all land fill from the mountains. The blue are great rivers across the Coastal plain
About 35 million years ago a great meteorite or comet impacted the Earth near the town of todays Newport News, cracking the surface and creating a huge depression 50 miles wide. As the rives from the mountains and the ocean rushed in to fill in the depression the Chesapeake Bay was formed. LIE School
Washington Canyon is one clue that the mouth of the Susquehanna River was located north of its current exit, at the southern edge of the Chesapeake Bay
