Holly Ridge Fault Zone
"Exposure of the Holly Ridge fault zone, near Dexter, Missouri.
Relatively young wind-blown glacial deposits have been faulted against
much older alluvial and marine deposits. This indicates that
significant faulting and large earthquakes have occurred here in the
past and will probably occur here again in the future. The most recent
earthquake activity has been within the past few thousand years ---
quite recent in geologic time. The Holly Ridge fault zone, like the
English Hills fault zone, is coincident with the Commerce Geophysical
Lineament, a significant, continental-scale linear feature that is
apparent in topography, geophysical data, and remote sensing imagery."
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