Name:  Ecrinal Limestone

Geologic Name:  Lockport Dolomite (Gasport member)

Reference:  Kindle, E.N., and Taylor, F.B., Description of the Niagara Falls
quadrangle (N.Y.); U.S. Geol. Survey Geol. Atlas, Niagara folio (No. 190), 1913.

Microscopic characters:  The rock consists of irregular forms of calcite that
show no twinning and little cleavage with a fine granular calcite interstitial 
groundmass.  The larger forms are undoubltedly fossil remains but cannot be identified.