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Not only is the Chesapeake Bay so enormous it can be seen from space, it essentially came from outer space.
An asteroid or huge chunk of ice slammed into Earth about 35 million years ago, splashing into the Early Cretaceous North Atlantic, sending tsunamis as far as the Blue Ridge Mountains and leaving a 56-mile-wide hole at the mouth of what is now the bay.
But a newly published research paper written by U.S. Geological Survey scientists shows that wasn’t the end of it. While drilling holes in southern Virginia to study the impact crater, the scientists discovered “the oldest large body of ancient seawater in the world,” a survivor of that long-gone sea, resting about a half-mile underground near the bay, according to the USGS.
“What we essentially discovered was trapped water that’s twice the salinity of [modern] seawater,” said Ward Sanford, a USGS hydrologist. “In our attempt to find out the origin, we found it was Early Cretaceous seawater. It’s really water that’s from the North Atlantic.”
Nice! The universe has many knock out punches but we just wont go down!
2.7 billion(orly) year old lake
Reminded me of this. Not sure about 2.7 billion year but it's definitely interesting.
Tests by researchers have shown that the water is at least 1.5 billion years old, but the surrounding geology suggests it could be much older, dating to a time when all of life on Earth had not evolved much beyond primitive, single-celled microbes.
The scientists said they intend to analyse the water for signs of life, which could help in the development of techniques for finding extra-terrestrial life-forms living within underground pockets of water on either Mars or Europa, one of the moons of Jupiter.