This rock unit formed when thick layers of sand built up on the ocean floor, about 41 to 47 million years ago.
Rutherford Birchard Hayes was born in Delaware, Ohio, on October 4, 1822, to Rutherford Ezekiel Hayes, Jr. and Sophia Birchard.
The grains of sand that make up the Tenino Sandstone are very small, measuring about the size of a grain of sugar.