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Crater Lake caldera, Oregon (Pan)
Crater lake fills the caldera of Mt. Mazama, a Cascade stratovolcano that erupted catastrophically 7700 years ago. Wizard Island, an andesitic cinder cone, forms the island. Crater Lake National Park, Oregon. (IP-0533)
Download Imageincandescent glow from Kilauea caldera
Incandescent glow from lava in Kilauea caldera, Hawaii Volcanoes National Park. (170920-20)
Download ImageIncandescent glow from Kilauea caldera
Incandescent glow from lava in Kilauea caldera, Hawaii Volcanoes National Park. (170920-38)
Download ImageSummit caldera, Mauna Loa, Hawaii
Frozen lava lake in Summit caldera, Mauna Loa shield volcano Hawaii Volcanoes National Park. (170918s-78)
Download ImageEdge of summit caldera, Mauna Loa
Western edge of summit caldera, Mauna Loa –showing pressure ridges in frozen lava lake and older basaltic lava flows. Mauna Kea shield volcano in background. Hawaii Volcanoes National Park. (170918s-68)
Download ImageEdge of summit caldera, Mauna Loa
Western edge of summit caldera, Mauna Loa –showing pressure ridges in frozen lava lake and older basaltic lava flows. Pahoehoe flow in foreground is cut off by caldera ring fault. Hawaii Volcanoes National Park. (170918s-68)
Download ImageSummit caldera, Mauna Loa, Hawaii
Frozen lava lake in Summit caldera, Mauna Loa shield volcano. View westward to mountain’s summit. Hawaii Volcanoes National Park. i(170918s-78)
Download ImageSummit caldera and fractures, Mauna Loa, Hawaii
Summit caldera and ring fractures, Mauna Loa shield volcano, Hawaii Volcanoes National Park. (170918s-11f)
Download ImageKilauea caldera, Hawaii
Kilauea caldera and steam, Hawaii Volcanoes National Park. (170914s-3)
Download ImageCaldera. Long Valley caldera, CA.
Aerial view of Long Valley caldera, Caldera. (Ig-57).
Download ImageCrater Lake, a 7700 year old caldera.
Caldera and cinder cone: Crater Lake and Wizard Island, Oregon. Crater Lake National Park. (Ig-52)
Download ImageDike in caldera wall, Crater Lake, OR
Dike in caldera wall, Crater Lake National Park, Oregon. (30-11421)
Download ImageDikes in caldera wall, Crater Lake
Dikes in caldera wall, Crater Lake National Park, Oregon. (30-11472)
Download ImageDike in caldera wall, Crater Lake (vertical)
Dike in caldera wall, Crater Lake National Park, Oregon. (30-11403)
Download ImageCrater Lake caldera, Oregon (Pan)
Crater Lake caldera and Wizard Island as seen from The Watchman. Crater Lake National Park, Oregon. (Image ID# 141012-38)
Download ImageBishop Tuff, California
Bishop Tuff exposed in the walls of the Owens River Gorge. The tuff erupted 767,000 years ago from the Long Valley Caldera, California. Note the rock fall deposit that partially blocks the river. Note also the radial columnar jointing and the small hill on the rim that marks a fossil steam vent! (241109-55)
Download ImageCrater Lake, Oregon (vertical)
Aerial view of Crater Lake Caldera, Crater Lake National Park, Oregon (IP2212-9489)
Download ImageFlow-banded tuff, SE Oregon (vertical)
Flow-banding in rhyolite welded tuff, McDermitt Caldera, SE Oregon (200814-68)
Download ImageIsoclinal fold in welded tuff, SE OR
Isoclinal fold in rhyolitic welded tuff defined by flow-banding, McDermitt Caldera, SE Oregon (200814-33)
Download ImageAbandoned mercury mine workings, SE OR.
Abandoned mercury mine workings along the northeast wall of the McDermitt Caldera, southeast Oregon. Post-caldera lake beds form the light-colored stratified rocks near the dump poles; Inflow welded tuff forms the brown rock in the foreground. (200814-24)
Download ImageMiocene Lake bed deposits, SE Oregon
Miocene Lake bed deposits filling McDermitt Caldera SE Oregon (200814-8)
Download Image
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