Click on the following link to Wisconsin Public
Radio's Larry Meiller Show.
Larry
Meiller
talks about the Niagara Escarpment with Joanne Kleussendorf, director of
the Weis Earth Science Museum at UW-Fox Valley in Menasha.
The rock of the escarpment is primarily
limestone and dolomite that formed 420 million years ago when shallow, salt
water seas covered this part of North America.