Natural Levees (LAQnl;0)

State	Louisiana
Name	Natural Levees
Geologic age	Phanerozoic \| Cenozoic \| Quaternary \| Holocene
Original map label	Qnl
Comments	Shown only on past and present courses of major streams.
Primary rock type	silt
Secondary rock type	clay or mud
Other rock types	sand
Lithologic constituents	Major Unconsolidated > Coarse-detrital > Sand (Alluvial) Unconsolidated > Fine-detrital > Clay (Alluvial) Unconsolidated > Fine-detrital > Silt (Alluvial)
Map references	United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/. [http://www.nwrc.usgs.gov/.]
Unit references	United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/. [http://www.nwrc.usgs.gov/.]
Geographic coverage	Ascension - Assumption - Avoyelles - Bienville - Bossier - Caddo - Caldwell - Catahoula - Concordia - De Soto - East Baton Rouge - East Carroll - East Feliciana - Evangeline - Franklin - Grant - Iberia - Iberville - Jefferson - Lafayette - Lafourche - La Salle - Madison - Morehouse - Natchitoches - Orleans - Ouachita - Plaquemines - Pointe Coupee - Rapides - Red River - Richland - Saint Bernard - Saint Charles - Saint James - Saint John the Baptist - Saint Landry - Saint Martin - Saint Mary - Tensas - Terrebonne - Union - West Baton Rouge - West Feliciana - Winn