Many more youthful volcanoes are scattered across the vast expanses of central and eastern Oregon, including Newberry Volcano (near Bend) and Diamond and Jordan craters in far southeast Oregon. The Cascade peaks in Washington and California have erupted more recently than those in our state.

Beginning about 3 million years ago, a string of young volcanoes in eastern Oregon began erupting and covering large areas with lava flows of fluid basalt. These volcanoes stretch across the high desert of southeast Oregon from Newberry Volcano …

Newberry volcano east of the Cascade Range in Oregon, is one of the largest volcanoes on the US mainland. It covers about 1600 km2 and contains a large caldera, Newberry Crater, that was created several 100,000 years ago by a series of devastating eruptions.

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Hundreds of volcanoes of all types and sizes erupted across the landscape. Huge explosive calderas erupted enormous ash clouds that deposited ash tuff over large areas.

Between 14 and 16 million years ago, "fissure" volcanic eruptions in eastern Washington, eastern Oregon, and western Idaho produced enormous volumes of molten Columbia River basalt that flowed like water west into the Deschutes-Columbia Plateau province in eastern Washington and northeastern Oregon, with some lava continuing to flow as far west ...

The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in Washington, Oregon, and Idaho.

The volcanoes in Oregon are located in the Pacific Ring of Fire, where volcanic activity rises and creates geothermal energy with tectonic plate movements. Areas like Newberry, Mount Hood, and Crater Lake are the generous contributors of volcanic heat used to generate geothermal power plants and provide clean energy to the citizens.

A chain of volcanoes in eastern Oregon began erupting about 50 million years ago during a time of tropical climate conditions that supported lush woodlands. The volcanic and sedimentary rocks from these volcanoes are known as the Clarno Formation.

Feb 26, 2020 · Situated on the eastern flank of the Ring of Fire, a belt of volcanic activity along the rim of the Pacific Ocean, Oregon's legacy of volcanism has defined many of the state's geologic and geographical features for millions of years.