The geology displayed in and around the city of Fort Wayne, Indiana, is interesting and critically important for at least two reasons: (1) a large quarry near the city exposes an unusual variety of Paleozoic strata, some facies of which are not exposed at any other place; and (2) the city is situated at the junction of several Pleistocene glacial features of regional significance (Fig.1).

The largest and most spectacular quarry in northeastern Indiana is the Ardmore Avenue Quarry of May Stone and Sand, Inc., located along Ardmore Avenue in the NE¼Sec.29, T30N., R.12E. on the southwest edge of...