|Athro, Limited Earth Science K-T Field Trip|
Many of the Cretaceous sediments in this area are rich in smectitic clays and weather with a very characteristic popcorn texture. When it rains these clays make and extremely slippery mud.
You are currently looking at Cretaceous sediments. These rocks are labeled 1 on the section at right. You may go to a picture of more Cretaceous Sediments, or click anywhere on the section at right to explore further.