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Field map of line of soundings offshore from Cape Henlopen, Delaware Bay

Description

Field map of line of soundings offshore from Cape Henlopen, Delaware Bay.In the far SE corner, the break in soundings from 85 fathoms to 145 fathoms isone of the earliest indications of the continental shelf break.

Credit

NARA C&GS; Colllection

Display Date

1847 ca.

Location

Delaware, Offshore

Collection

Historic Coast & Geodetic Survey
Historic Maps
General

Keywords

Coast and Geodetic Survey
Archive Seafloor Mapping