Search results
Results from the WOW.Com Content Network
By volume, the two largest Cascade volcanoes are the broad shields of Medicine Lake Volcano and Newberry Volcano, which are about 145 and 108 cubic miles (600 and 450 km 3) respectively. Glacier Peak is the only Cascade volcano that is made exclusively of dacite. The history of the cascade volcanoes can be separated into three major chapters ...
The Juan de Fuca tectonic plate is being subducted under the North American Plate, leading to volcanic activity in the Cascades like at West Crater. In southern Washington state, the Cascade Range, which sits south of the dacitic Garibaldi Volcanic Belt, spans 600 miles (970 km) from British Columbia in Canada to Lassen Peak in northern California in the United States.
Goosenest is a shield volcano topped by a pyroclastic cone at its summit located in the Cascades of northern California. [1] The area is near Mount Shasta, and represents one of the region's short-lived shield volcanoes, although Goosenest is a larger and longer-lived example.
Its summit is the highest point within Crater Lake National Park, and the tenth highest peak in the Oregon Cascades. [6] A small fire lookout tower stands on the summit, at the end of a trail that zigzags approximately 1,500 feet (460 m) up the mountain. The mountain is named for Oregon pioneer Levi Scott, founder of Scottsburg, Oregon. [7]
Belknap is the youngest shield volcano in the Cascade arc by far, [19] with rugged, barren lava fields that contrast with the forested fields of older Cascade shields. [ 19 ] [ 20 ] It lies within the central Oregon segment of the Cascades near the Three Sisters area, which is marked by closely clustered volcanic centers that include, from ...
Rhyolite from the Quaternary can also be found at Jefferson, though it is not commonly found within the major volcanic centers of the Oregon Cascades. [41] The volcano constitutes a small stratovolcano within the Cascades, with a current volume of 3.4 cubic miles (14 km 3), though prior to erosion and other alterations over time, it may have ...
Magee Peak is a stratovolcano in the Cascade Volcanic Arc north of Lassen Peak in Shasta County, California, United States. [2] It was last active 1 to 2 million years ago. [1] The peak is a destination for hikers, and marks the end of the Magee Trail hiking trail. There was once a watchtower at Magee Peak. [3] [4] [5] [6]
The Mount Meager massif is a group of volcanic peaks in the Pacific Ranges of the Coast Mountains in southwestern British Columbia, Canada.Part of the Cascade Volcanic Arc of western North America, it is located 150 km (93 mi) north of Vancouver at the northern end of the Pemberton Valley and reaches a maximum elevation of 2,680 m (8,790 ft).