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.
Along with the rest of the Hawaiian Islands, Oahu is one of the largest and northernmost islands of Polynesia. In the greatest dimension, this volcanic island is 44 miles (71 km) long and 30 miles (48 km) across. The length of the shoreline is 227 miles (365 km). The island is the result of two separate shield volcanoes: WaiÊ»anae and KoÊ»olau, with a broad valley or saddle (the central OÊ»ahu Plain) between them. The highest point is KaÊ»ala in the WaiÊ»anae Range, rising to 4,003 feet (1,220 m) above sea level.