The Geology of Long Island Sound

Abstract

The investigation of the geology of Long Island was undertaken in connection with a study of the underground waters of the island made by the United States Geological Survey in cooperation with the Commission on Additional Water Supply of New York City. During the progress of the work many new geologic facts were developed, some of which demanded extensive modifications of the views previously held as to the structure and geologic history of the island. In fact, a complete revision of the geology became necessary in order that the observations on the underground waters might be thoroughly understood. This geologic work was conducted in connection with the water investigation during 1903, most of the roads on the island being traversed and a very large number of well records collected. Geologic work was continued during several weeks in 1904 and again for a few days in 1905, to complete a study of bluff sections along the north shore and to establish the correlation of the Long Island deposits with other Pleistocene deposits on the east and west.