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. This map shows locations of Chesapeake Bay crater and coreholes; the black and red circular lines mark the outer edges of the inner and outer craters; the black circle marks the location of the deep corehole. Image credit: Sanford WE...
