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Coordinates: 41°10′41″N 121°26′35″W / 41.178°N 121.443°W

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Brushy Butte

Highest point
Elevation	3,852 ft (1,174 m)^[1]
Coordinates	41°10′41″N 121°26′35″W / 41.178°N 121.443°W / 41.178; -121.443^[1]
Geography

Location	Shasta County, California, U.S.
Parent range	Cascade Range
Geology
Rock age	Pleistocene
Mountain type	Shield volcano^[1]
Volcanic arc	Cascade Volcanic Arc
Last eruption	Pleistocene

Brushy Butte is a small, poorly studied,^[2] shield volcano located immediately east of Timbered Crater, south-southeast of the Medicine Lake Highlands in northern California, U.S. (near where Siskiyou County, California is adjacent to Shasta County, California). This volcano is considered to have formed soil development and a degree of revegetation similar to that of Hat Creek flow.^[3] There is no current information on any Holocene eruptions from Brushy Butte, the last known eruption for the Brushy Butte was in the Pleistocene age, and the eruption was considered to be over 10-20 years, this was found based on the different lava flow landforms created and their placement around the interior of the volcano.. ^[4] Brushy Butte is located in a rifting area and the type of magma that erupted is called tholeiitic basalt; a type of lava that is dark and it contains 45 to 53 percent of silica, rich in iron and magnesium.^[5]

References

^ ^a ^b ^c "Brushy Butte". Global Volcanism Program. Smithsonian Institution. Retrieved 2013-01-04.
^ Harpel, Christopher J.; John W. Ewert (2000-10-05). "Bibliography of literature from 1990-1997 pertaining to Holocene and fumarolic Pleistocene volcanoes of Alaska, Canada, and the conterminous United States". Open-File Report 00-017, version 1.0. United States Geological Survey. Retrieved 2008-08-14. {{cite journal}}: Cite journal requires |journal= (help)
^ "Hat Creek Flow | Sierra Nevada Geotourism". sierranevadageotourism.org. Retrieved 2021-11-12.
^ Downs, Drew T.; Champion, Duane E.; Clynne, Michael A.; Muffler, L. J. Patrick (2021). "A Multidisciplinary Investigation Into the Eruptive Style, Processes, and Duration of a Cascades Back-Arc Tholeiitic Basalt: A Case Study of the Brushy Butte Flow Field, Northern California, United States". Frontiers in Earth Science. 9: 101. doi:10.3389/feart.2021.639459. ISSN 2296-6463.
^ "Volcano Watch — Kīlauea's key—Using Hawaiian eruptions to understand volcanism in northern California". www.usgs.gov. Retrieved 2021-11-12.

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