Silurian Reef at
Milwaukee County Stadium

A single reef, 20 m thick and about 120 m in breadth, is located on the Veterans Administration grounds adjacent to Milwaukee County Stadium. This natural exposure has been designated as a national geologic landmark by the U.S. National Park Service. Made in the 1920s, this photo shows a boy climbing the outcrop at the lower right.

View of the reef from the parking lot of County Stadium; note massive nature of reef. Very few fossils have been found in this outcrop.

Cross-section of the reef, based on drillhole and geophysical data. Note that most of the reef is buried beneath soil and other sediment.

The only known fossil (trilobite) from the reef outcrop at County Stadium deposited in a museum collection.

(For location of this reef, see maps linked to Wauwatosa page.)

© 1997, Milwaukee Public Museum, Inc.