1. Maps showing the stratigraphic framework and Quaternary geologic history of eastern Long Island Sound Yale Public content 1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Map Distribution. English. Public. Long Island Sound (N.Y. and Conn.). Quaternary.