Contours that Represent the Percentage of Sandstone for the Lower, Middle and Upper Miocene in Southern Louisiana
The sand percent contours were produced by the Louisiana Geological Survey and were digitized from Chapter 11, Cenozoic, in The Gulf of Mexico Basin, Volume J, The Geology of North America (1991).  The data are provided in three shapefiles--one for each stage (Lower, Middle and Upper) of the Miocene series.
These …