Eramosa dolostone, sedimentary rock, from Wiarton, Ontario. Paleozoic, Silurian, 400 million years old. Eramosa dolostone was deposited in a shallow salt sea in the Michigan Basin. The eramosa dolostone forms the topmost part of the rock outcropping at the rim Niagara Falls. The fine layering in the rock shows that it formed in a quiet environment where stromatolites (cyanobacteria) grew. This material is used as a decorative stone called "Waterfall Rock" and is used for landscaping. Used along the new boardwalk in Waterloo Park and in the sculpture garden at the Seagram Loft Condominiums in uptown Waterloo. It may also be cut to enhance the layering.
