Pages authored by Erik P. Kvale:

1. Geologic Time / Tides Recorded in Rocks
   Ever hold a month of time in your hand? Of course it is impossible, but you can hold a time recording instrument in your hands (like a stopwatch or an hourglass). Did you know that rocks are like stopwatches in that they record time?
2. Geologic Time / Time and Rocks
   Time is usually difficult to define in the rock record. How long did it take to deposit the sandstone exposed in the cliffs of Turkey Run or the limestone exposed in the quarries around Bloomington and Bedford?
3. Geologic Time / Turkey Run
   Time is usually difficult to define in the rock record. How long did it take to deposit the sandstone exposed in the cliffs of Turkey Run or the limestone exposed in the quarries around Bloomington and Bedford?