Wabash Valley Seismic zone. By R odrigo R. Alexa P. Cortez M. Jasmine L. Location Illinois, Southwestern Indiana, Missouri, & Tennessee. North American plates. Evansville, Springfield, St. Louis, M emphis. Divergent. Plates began to actively pull apart in W abash Valley region.
By Rodrigo R. Alexa P. Cortez M. Jasmine L.
Plates began to actively pull apart in Wabash Valley region.
Plates moving about 1-2 millimeters per year.
2008- Magnitude 504
West salem, Illinois
6 hour aftershock