Extremely salty water is at least 100 million years old
Supersaline sediments off East Coast shed light on Atlantic Ocean’s early history
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/11/jm_Chesapeakelandsat_free.jpg?fit=860%2C460&ssl=1)
SALTY SEA The Chesapeake Bay holds a pocket of high-salinity groundwater that has been undisturbed since the Early Cretaceous, at least 100 million years ago.
Landsat/NASA/Wikimedia Commons