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The Oregon Department of Geology and Mineral Industries (DOGAMI) is the agency of the government of the U.S. state of Oregon responsible for collecting, maintaining and disseminating geologic information, and regulation of industries which commercially develop the state's geological resources, including Natural gas, Crude oil, and other Mineral exploration and Mining.
Hogg Rock is a tuya volcano and lava dome in the Cascade Range of northern Oregon, United States, located close to Santiam Pass.Produced by magma with an intermediate andesite composition, it has steep slopes and thick glassy margins.
Olson Mountain, located in Jackson County, Oregon in the US is an extinct shield volcano. [1] It created the Table Rocks north of Medford, Oregon. Geography.
Oregon Department of Geology and Mineral Industries: 73– 92. Archived (PDF) from the original on October 30, 2020; Madin, I. P. (2009b). Geologic Map 119, Geologic Map of the Oregon City 7.5' quadrangle, Clackamas County, Oregon (PDF) (Report). Oregon Department of Geology and Mineral Industries. pp. 1– 46. OCLC 502019232.
Geologic map of the Fidalgo ophiolite on Fidalgo island by Ned Brown, courtesy of Oregon Department of Geology and Mineral Industries. [1] The Fidalgo ophiolite is one of several Jurassic ophiolite complexes that occur along the western margin of North America, such as the Coast Range ophiolite. The Fidalgo ophiolite occurs within the Haystack ...
Hayrick Butte is located in Linn County in the U. S. state of Oregon. [1] Close to Santiam Pass, [2] it forms part of the United States Geological Survey topographic map for the Three Fingered Jack volcano. [1]
The Siletz River Volcanics, located in the Oregon Coast Range, United States, are a sequence of basaltic pillow lavas that make up part of Siletzia. [ 1 ] [ 2 ] The basaltic pillow lavas originally came from submarine volcanoes that existed during the Eocene .
At 10,497 feet (3,199 m), Mount Jefferson is the second tallest mountain in Oregon. It is a stratovolcano with slopes mantled by five glaciers - Whitewater, Waldo, Milk Creek, Russell, and Jefferson Park. Three Fingered Jack is a heavily eroded and deeply glaciated shield volcano and consists mainly of basaltic andesite lava. [5]