Cross Section of Silurian Reef
at Wawautosa, Wisconsin

Cross-section of the area at 68th and State streets published in 1877 by T.C. Chamberlin, showing massive, fractured reef rock (Schoonmaker's Quarry) and flat-bedded, interreef deposits to the west (Busack's Quarry). Note small area of inclined flank beds at the western edge of the reef.

© 1997, Milwaukee Public Museum, Inc.