The Tumalo volcanic center of Central Oregon is viewed as a source of large-volume Pleistocene ashflows, in the US state of Oregon. How big was the volcanic...

reached a VEI of 6 or greater, but have no documented calderas. The Tumalo Volcanic Center is a volcano located just east of Bend, Oregon. It started producing...

Three Sisters (Oregon), USA; Tumalo volcanic center; with eruptions from 600–700 to 170 ka years ago Uinkaret volcanic field, Arizona, USA; the Colorado...

see Broken Top, Mt. Bachelor, and the Three Sisters Complex. Tumalo Volcanic Center "Tumalo Mt". NGS Data Sheet. National Geodetic Survey, National Oceanic...

heavily glaciated—such as Mount Washington and Mount Thielsen—display eroded volcanic necks, Three Fingered Jack's present summit is a comparatively narrow ridge...

trail around the top of Lava Butte is 0.35 miles (0.56 km) long. Tumalo Volcanic Center, of which Lava Butte is part "Lava Butte Reset". NGS Data Sheet...

miles (25 km3). Mount Bachelor stands 3 miles (4.8 km) southeast of the Tumalo Mountain volcano and 18 miles (29 km) to the southwest of the city of Bend...

Retrieved 2015-02-21. All existing Boring Volcanic centers are extinct, but the Boring Volcanic Field presumably is not. Since activity started 2.6 million...

It is part of the Boring Lava Field, which includes more than 80 small volcanic edifices and lava flows in the Portland–Vancouver metropolitan area. The...

Hole-in-the-Ground is a large maar (volcanic explosion crater) in the Fort Rock–Christmas Lake Valley basin of Lake County, central Oregon, northeast of...