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Oregon Volcanoes

Oregon’s landscape is shaped by the Cascade Volcanic Arc, featuring a diverse range of geological formations from massive stratovolcanoes to ancient cinder cones. This collection includes the remains of Mount Mazama, which collapsed to form Crater Lake, and the rugged peaks of Mount Jefferson and Mount Thielsen. Visitors can explore the Newberry National Volcanic Monument, home to the Newberry Caldera and Lava Butte, or visit the high desert to see the obsidian-rich Glass Buttes and the well-preserved Coffeepot Crater.

Oregon Volcanoes — Χάρτης

docentjoyce / CC BY 2.0

A

Mount Mazama

Mount Mazama is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range.

Eric.Prado / CC BY-SA 4.0

B

Mount Jefferson

Mount Jefferson is a stratovolcano in the Cascade Volcanic Arc, part of the Cascade Range in the U.S. state of Oregon.

Tequask / CC BY-SA 4.0

C

Mount Bachelor

Mount Bachelor, formerly named Bachelor Butte, is a dormant stratovolcano atop a shield volcano in the Cascade Volcanic Arc and the Cascade…

Ennetws / Public domain

D

Powell Butte

Powell Butte is an extinct cinder cone butte in Portland, Oregon, United States.

Cacophony / CC BY-SA 3.0

E

Pilot Butte

Pilot Butte is a lava dome that was created from an extinct volcano located in Bend, Oregon.

MB298 / CC BY-SA 4.0

F

Black Butte

Black Butte is an extinct stratovolcano in the U.S. state of Oregon. Located in Jefferson County, it is part of Deschutes National Forest.

Smithers7 / CC BY 3.0

G

Lava Butte

Lava Butte is a cinder cone in central Oregon, United States, just west of U.S.

H

Mount Thielsen

An extinct shield volcano known as the 'Lightning Rod of the Cascades' due to its spire-like peak. The summit is frequently struck by lightning, which creates fulgurites in the rock.

I

Belknap Crater

A shield volcano in the McKenzie Pass area surrounded by a 65-square-mile field of basaltic lava. The Pacific Crest Trail passes directly through its rugged, dark terrain.

J

Little Belknap

A satellite vent of Belknap Crater featuring a rugged lava dome and accessible volcanic caves. It offers panoramic views of the surrounding Three Sisters and Mount Washington.

K

Central Pumice Cone

A cinder cone located in the center of the Newberry Caldera. It was formed by explosive eruptions of pumice and sits between Paulina and East Lakes.

L

North Paulina Peak

A high point on the rim of the Newberry Caldera, providing views of the volcanic crater, the Big Obsidian Flow, and the surrounding Cascade Range.

M

China Hat

A prominent rhyolitic lava dome situated on the eastern flank of the Newberry Volcano within the Deschutes National Forest.

N

Ikt Butte

A cinder cone in the Newberry volcanic field near Bend, representing one of the many smaller vents that surround the main caldera.

O

Maiden Peak

A broad shield volcano in the High Cascades near Waldo Lake. It features a glaciated summit and is a popular destination for backcountry hiking and skiing.

P

Glass Buttes

A complex of silicic lava domes in central Oregon famous for diverse obsidian varieties, including mahogany, midnight, and rare iridescent rainbow obsidian.

Q

Glass Butte

The highest point of the Glass Buttes complex, this volcanic dome is a significant site for finding high-quality volcanic glass.

R

Lava Mountain

A shield volcano located in the arid backcountry of Lake County, part of the volcanic transition zone between the Cascades and the Great Basin.

S

Coffeepot Crater

A remarkably well-preserved cinder cone that served as the primary source for the 27,000-acre Jordan Craters basalt flow in southeastern Oregon.

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