Find out how tall George Washington is! To help visualize his height, we've included a side by side comparison with other founding members of the United States, short and tall!
Upwarped mountains are generally the result of broad arching of the crust or sometimes great vertical displacement along a highangle fault. The Black Hills in South Dakota and the Adirondack Mountains in New York are upwarped mountain ranges. Volcanic mountains are the accumulations of large amounts of volcanic lavas and pyroclastic material around the volcanic vent, such as seamounts and stratovolcanoes. The Hawaiian and Aleutian Islands are volcanic mountains. Fault-block mountains result from tensional stress.
The islands of Hawaii formed over a hot spot and are not located on the Pacific Ring of Fire (Figure 8.7). The Hawaiian islands are the exposed peaks of a great chain of volcanoes that were formed over millions of years. The islands are thought to lie directly above a column of hot rock called a mantle plume.olcanic Hot Spots [edit]. Although most volcanic activity on Earth occurs at plate boundaries, there are some volcanically active spots that are in the middle of a tectonic plate. These areas are called hot spots.