New Madrid Seismic Zone

Sand dike and sill exposed in drainage ditch in southeastern Missouri

Detailed Description

Photograph of sand dike and sill exposed in drainage ditch in southeastern Missouri. Sand dike intruded weathered sand; sill emplaced below weathered clay. Layering within the dike and sill indicate that they formed during two or more events. For scale, knife is 8 cm long.

Details

Image Dimensions: 500 x 318

Location Taken: US