KJds 48,733 acres. Sandstone interbedded with a mixture of sand, mud, and rock. Moderate slope, irregular drainage, irregular soil distribution, and irregular topography. Slumping most common south of Coquille River. Tmsc 88,086 acres.
Erosion occurs particularly in flood plain.
Gentle to moderate slopes form less hazards. Cobble and pebble conglomerates. Ju 6,045 acres. Iron and magnesium rich rock formed at depth. Tt 200,694 acres.