Outcrops at Quarry Lake Park
Racine, Wisconsin

An area of massive reef core (right side of photo) bordered by inclined flank beds (left side of photo).

Typical example of reef flank beds, which dip downwards from right to left in this outcrop.

Detail of massive reef core. The orange stain is derived from weathering of the mineral marcasite, which is present in small amounts in the dolostone.