What is the landform of the Grand Teton?

http://en.wikipedia.org/wiki/Grand_Teton

The Grand Teton is a prominent mountain range located in the Rocky Mountains of Wyoming, USA. It is actually a part of the Teton Range, which stretches for approximately 40 miles (64 kilometers) from north to south. The Teton Range is characterized by rugged and steep peaks with deep valleys. The highest peak in the range is the Grand Teton itself, standing at an elevation of 13,775 feet (4,199 meters). The landform of the Grand Teton is that of a classic mountain peak, with sharp and jagged ridges, glacial valleys, and stunning alpine scenery. It is a popular destination for hikers, climbers, and nature enthusiasts.