||Arkansas and Northern Louisiana
||The Smackover Brown Dense Shale is the newest emerging shale play in the USA as exploration & production companies search for Oil. The Horizontal Smackover Brown Dense Shale is between 8,500-11,100 feet deep.
||The geology of the lower smackover in northern Louisiana has the trend formation sitting just below the haynesville shale. Another recent oil discovery to the south of both the haynesville shale and lower smackover shale, is the Tuscaloosa Marine Shale.