LGS Digital Data
The Louisiana Geological Survey is currently revising the surface geologic data.
Revised 1:100,000 scale surface geology shapefiles for north Louisiana are available. Please see the 100k maps page for download.
Updated PDF maps, both 100k and 24k, are available. See below for existing maps (revisions may have major changes).
Select 100k or 24k for data/PDF maps
For more maps please see the Maps and Atlases page.