1.   Chatsworth sculptor Cindy Medlynn has long been intrigued by the way earthquakes and other geologic forces can transform rocks and minerals into art materials.

2.   Draper has a keen awareness of the geologic forces underfoot.

3.   No one had been able to solve the mystery of how a biological process so powerful that it became a geologic force could burst on the scene so quickly.

4.   Perhaps there is an ancient fracture in the North American plate and somehow geologic forces are causing it to rupture, Stein said.

5.   The mighty geologic forces that forced the mountains skyward still smolder deep within the earth.