From the supergraphic website:
"Mysteriously hidden under the Delmarva Peninsula is the largest meteorite crater in the U.S. How did the impact change the course of rivers and create the Chesapeake Bay? What fascinating creatures seek its depths?"
The area is now known as the Chesapeake Bay Impact Crater. The area is now a USGS study site. From the National Geographic web site: (
visit link)
"About 35 million years ago—the dinosaurs are dead, but the Appalachian Mountains are still covered in tropical rain forests—a rock from space that was more than a mile wide and moving at supersonic speed crashed into the Atlantic Ocean off North America.
Traveling at about 70,000 miles (113,000 kilometers) an hour, the asteroid or comet (bolide) splashed through several hundred feet of water and several thousand feet of mud and sediment.
Billions of tons of ocean water were propelled into the air as high as 30 miles (48 kilometers) and vaporized. Millions of tons of debris and rocks were ejected into the atmosphere. The incident incinerated everything along the East Coast, triggered gigantic tsunamis, and decimated marine life in the surrounding area.
For millions of years the crater lay buried in the southern part of the Chesapeake Bay and surrounding peninsulas, more than a thousand feet (300 meters) beneath sand, silt, and clay. Scientists discovered it in 1983 and have been studying it ever since.
For the past two summers, researchers have been extracting core samples from deep inside the crater. The core material is beginning to provide the answers to a lot of questions about the crater and its effects in the region.
"We're finding things that are giving us an idea of the heat and power at the time of impact—partially melted algae fossils, completely shattered rocks, lots of basin fragments, fractured and tilted seabeds," said David Powars, a hydrologist at the U.S. Geological Survey (USGS)."
The Coordinates of featured scene are for Cape Charles, Virgina.
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