Newberry Volcano
| Newberry Volcano - Paulina Peak | |
|---|---|
Newberry Caldera, with Paulina Lake, East Lake, and Big Obsidian Flow
|
|
| Highest point | |
| Elevation | 7,989 ft (2,435 m) NAVD 88 |
| Prominence | 3,214 ft (980 m) |
| Coordinates | 43°41′21″N 121°15′18″W / 43.689195264°N 121.25488985°WCoordinates: 43°41′21″N 121°15′18″W / 43.689195264°N 121.25488985°W |
| Geography | |
| Location | Deschutes County, Oregon, U.S. |
| Parent range | Cascade Range |
| Topo map | USGS Paulina Peak |
| Geology | |
| Age of rock | About 600,000 years old |
| Mountain type | Shield volcano with pyroclastic cones |
| Volcanic arc | Cascade Volcanic Arc |
| Last eruption | 690 CE ± 100 years |
| Climbing | |
| Easiest route | Road to Paulina Peak |
| Designated | 1976 |
Newberry Volcano (with Newberry Caldera) is a large potentially activeshield volcano located 40 miles (64 km) east of the Cascade Range and about 20 miles (32 km) southeast of Bend, Oregon, within the Newberry National Volcanic Monument.
It is not a typical shield volcano because, in addition to erupting basaltic lavas, it also has erupted andesitic and even rhyolitic lava.
The volcano is 25 miles (40 km) in diameter and has a total volume of 120 cubic miles (500 km3). It possesses a large oval-shaped caldera 4 by 5 miles (6.4 km × 8.0 km) in diameter, called the Newberry Caldera. Within the caldera there are two lakes (Paulina Lake and East Lake), many pyroclastic cones, lava flows, and obsidian domes.
A deep gash in the northern flank, dubbed "The Fissure", is the end of a 29-mile (47 km) long series of fractures called the Northwest Rift Zone. Approximately 6,100 years ago, basaltic lava flows erupted from the fissure and covered part of Newberry's northwest flank.
Newberry Volcano was named for John Strong Newberry, who explored central Oregon for the Pacific Railroad Surveys in 1855.
During the Apollo program, parts of the volcano that resemble the Moon's surface were used to train the astronauts.
The Horse Lava Tube System, the Arnold Lava Tube System, and Lava Butte are all on the flanks of the volcano.
...
Wikipedia