Crater Lake is located at southwestern off Highway 62 in Oregon. It is Oregon?s only national park. It is the deepest lake in the United States and is the seventh deepest in the world. Crater Lake has an average diameter of 5.3 miles in length and is approximately 1,932 feet deep. Crater Lake is a result of a volcanic explosion that happened about 7,000 years ago. A long time ago, the pacific oceanic plate was gradually moving under the pacific continental plate in the process of plate tectonics. The pressure shaped the land to move upward and create a line of mountains that are currently located on the Cascade Range. These lavas piled and cooled on top of each other resulting in mountains like Mazama and Hood. Mount Mazama was built by successive flows of both andesite and dacite lavas. Mount Mazama was a stratovolcano, which was about 12,000 feet high after series of ash, cinders, and pumice explosions built it upward. During …show more content…
Wizard Island is called Wizard Island because of its resemblance to a sorcerer's pointed hat and because it is a cinder cone that resulted from blocky lava flows that came from its base. A cinder cone forms like a giant anthill from the fallback of hot lava fragments hurled from its crater. Since Wizard Island grew inside the caldera, after its collapse we know it is less than 7,700 years old. The oldest trees on the island are about 800 years old, so the Wizard's age is somewhere between 800 and 7,700 years old. The elevation of Wizard Island is about 6940 feet and the island?s height above water is about 764 feet. An underwater map of Crater Lake shows a steep increase in the slope of Wizard Island at a depth of about 250 feet, which probably meant that the volcanic island formed when the surface of Crater Lake was that much