Abstract

General Statement

In 1913 the writer published (see number 127 of the bibliography) evidence and argument to prove the deep submergence of the Connecticut and Hudson-Champlain valleys and indicated by a map the approximate amount of postglacial uplift. It was shown that the marine plane, represented by a wealth of shore phenomena, rises from zero below New York City to over 700 feet on the Canadian boundary, and that the isobases are inclined 20° from the latitude parallels, running north of west by south of east. In other words, the direction of steepest upslope is north 20° east. The determination of these directions was made by connecting points of equal altitude on the marine plane in the Hudson and the Connecticut valleys, and with no regard to any previous work or writing on land deformation. It is significant, therefore, to note that Professor Coleman found the direction of greatest uplift . . .

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