Pleistocene marine submergence of the Connecticut and Hudson valleys
Introduction Some postglacial submergence of New England has long been recognized, but the amount has not been determined. Recently it has been shown that the marine plane in the Hudson-Champlain Valley rises from zero at New York Bay to about 750 feet on the Canadian boundary. 2 It is evident that the territory adjacent to the Hudson Valley must have participated in the depression and uplift of the land, and it seems quite certain that the Connecticut Valley, lying parallel with the Hudson-Champlain Valley and only 60 miles distant, should exhibit similar evidences of submergence in oceanic waters. After reviewing the literature on the Connecticut Valley terraces an examination was made of the valley from Long Island Sound northward to Wells River, Vermont. The uplifted plane of the static waters as determined by Professor Emerson for Massachusetts was taken as the provisional datum, and it was found that this plane when . . .