March 14, 2003
This 180º east to west panoramic view of the Great Range in the Adirondack Mountains of New York was assembled from photos taken from the summit of Big Slide Mountain. Click on the image for a larger view. The Great Range is a ridge of precambrian metanorthosite that runs from Mt. Marcy northeastward to the Wolfjaws. This range was extensively modified by Pleistocene glaciation, and glacial cirques are clearly visible on the flanks of Armstrong, Gothics, and Saddleback summits. These summits are known as horn peaks or arêtes and have been substantially smoothed by erosion. Near the center of the panorama, the bare rock slide on Gothics Summit is the steep headwall of a huge cirque. The Great Range is bounded by 2 parallel fault valleys. Johns Brook runs through the fault valley to the northwest of the Range (in the foreground of the panorama), and the fault southeast of the Great Range is occupied by the East Branch of the Ausable River (behind the ridge in this view).