KEENE VALLEY, NY SURFICIAL GEOLOGIC MAP OF THE ADIRONDACKS HIGH PEAKS REGION
Information compiled from the data provides insight into Keene Valley’s slope failure susceptibility. Further, additional field reconnaissance revealed 23 noticeably large slope failures of various mechanisms were identified through field observation or aerial/satellite photographs. 91% of failures are considered rock slides found on the steep slopes of mountains. They are easily identifiable via photographs and can be over 1km long. The Adrian’s Acres Road slope failure is a deep rooted, multi-lobate toe, rotational slump. The third significant type of failure is located on Putnam Brook on the eastern edge of the quadrangle, and is classified as a translational slide. The Putnam Brook slide is active from 600-650 m above mean sea level (AMSL) and consists of compact diamicton and stratified sand, gravel and boulder.
The resulting new map provides a better understanding of sediment distribution and landslides in relation to the complex depositional setting that once existed in a glacial and proglacial lacustrine environment. New maps and information serve as a blue print for wise use in planning and development.