Interpretation of depositional units on the SeaMARC 1A image of the Mississippi Fan, USGS Gulf of Mexico Cruise 90001 (INTERP.SHP)
Since 1982 the U.S. Geological Survey (USGS) has collected a large amount of surficial and shallow subsurface geologic information in the deep parts of the Gulf of Mexico.  These data include digital sidescan sonar imagery, digital seismic-reflection data, and descriptions and analyses of piston and gravity cores. …