145-Million-Year-Old Seawater Found beneath Chesapeake Bay
A new study published in Nature provides chemical, isotopic and physical evidence that groundwater found more than 3,200 feet deep under the Chesapeake Bay is remnant water from the early Cretaceous North Atlantic Sea.
The seawater is up to 145 million years old and twice as salty as modern seawater. It was preserved like a prehistoric fly in amber, partly by the aid of the impact of a massive comet or meteorite that struck the area, creating Chesapeake Bay.
http://www.sci-news.com/geology/science-seawater-chesapeake-bay-01551.html
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