Twin Buttes (California)
Twin Buttes | |
---|---|
Highest point | |
Elevation | 5,351 ft (1,631 m)[1] |
Coordinates | 40°46′50″N 121°35′33″W / 40.7804364°N 121.5924841°W[2] |
Geography | |
Location | Shasta County, California, U.S. |
Parent range | Cascade Range |
Topo map | USGS Burney Mountain East |
Geology | |
Age of rock | Late Pleistocene |
Mountain type | Cinder cone |
Volcanic arc | Cascade Volcanic Arc |
The Twin Buttes are two
As of 2012, the Twin Buttes were still monitored by the United States Geological Survey for deformation, an indicator of pre-eruptive activity. However, they are considered to have "low to very low" threat potential for future eruptive activity.
Geography
The Twin Buttes are two cinder cone volcanoes[3] that lie north of Lassen Peak[1] in Shasta County, California.[4] The Twin Buttes reach a summit elevation of about 5,351 feet (1,631 m).[1][a] Nearby towns include Burney, Old Station, and Viola.[4] About 6,700 people live within 19 miles (30 km) of the volcanoes, though the population within 62 miles (100 km) climbs to more than 260,000.[1] The buttes are aligned north–northwest and lie at the center of the Bidwell Spring volcanic chain.[3]
Geology
The Twin Buttes — and other volcanoes near Lassen Peak — are part of the
The Bidwell Spring chain consists of five eruptive units including the Twin Buttes basalt.
Subfeatures
Subfeatures of the formation include Red Rock Hill, which has an elevation of 5,240 feet (1,597 m).[1] Other nearby features include basaltic andesite and a distinct basalt deposit southeast and northeast of the Twin Buttes, respectively, both of which were produced by eruptive activity between 50,000 and 35,000 years ago.[13]
Eruptive history
Located in an area that was highly active during the Quaternary, the Twin Buttes volcanoes formed during the late Pleistocene.
While Twin Buttes last erupted during the late Pleistocene, the area is still monitored by the USGS given its proximity to Lassen Peak. As of 2012, there were three GPS receivers continuously monitoring Twin Buttes for deformation, an indicator of pre-eruptive activity.[15] In 2014, the USGS considered Twin Buttes to have "low to very low" threat potential for a future eruption.[16]
See also
Notes
- [a] ^ The Global Volcanism Program of the Smithsonian Institution lists the Twin Buttes summit elevation as 5,351 feet (1,631 m).[1] However, the Geographic Names Information System lists its elevation as 5,341 feet (1,628 m).[2]
- [b] ^ The Global Volcanism Program lists Twin Buttes as a Pleistocene volcano.[1] Archived materials published by the United States Geological Survey lists it as late Pleistocene or early Holocene.[4]
References
- ^ a b c d e f g h i "Twin Buttes". Global Volcanism Program. Smithsonian Institution. 2013. Retrieved January 11, 2023.
- ^ a b "Twin Buttes". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. December 31, 1981. Retrieved March 20, 2023.
- ^ a b c d e f Clynne & Muffler 2010, p. 70.
- ^ a b c "Twin Buttes". United States Geological Survey. January 3, 2012. Archived from the original on February 1, 2014. Retrieved March 14, 2023.
- ^ a b c Clynne et al. 2012, p. 8.
- ^ Muffler et al. 2011, p. 2177.
- ^ Muffler et al. 2011, p. 2178.
- ^ Muffler et al. 2011, p. 2178–2179.
- ^ a b Germa et al. 2019, p. 38.
- ^ Clynne & Muffler 2010, p. Sheet 2.
- ^ Clynne & Muffler 2010, p. Sheet 3.
- ^ a b Muffler et al. 2011, p. 2179.
- ^ a b c Clynne et al. 2012, p. 17.
- ^ Clynne & Muffler 2010, p. Sheet 1.
- ^ "Deformation monitoring at Twin Buttes". United States Geological Survey. January 3, 2012. Archived from the original on March 12, 2013.
- ^ Rocha, V. (September 27, 2014). "Mammoth Lakes earthquake swarm tied to water pressure, tectonic stress". Los Angeles Times. Retrieved March 14, 2023.
Sources
- Clynne, M.A.; Muffler, L.J.P. (December 30, 2010). Geologic Map of Lassen Volcanic National Park and Vicinity, California (PDF) (Map). United States Geological Survey. Scientific Investigations Map 2899.
- Clynne, M.A.; Robinson, J.E.; Nathenson, M.; Muffler, L.J.P. (2012). Volcano hazards assessment for the Lassen region, northern California: U.S. Geological Survey Scientific Investigations Report 2012–5176–A (PDF) (Report). United States Geological Survey.
- Germa, A.; Perry, C.; Quidelleur, X.; Calvert, A.; Clynne, M.; Connor, C.B.; Connor, L.J.; Malservisi, R.; Charbonnier, S. (June 7, 2019). "Temporal relationship between the Lassen volcanic center and mafic regional volcanism". S2CID 195240340.
- Muffler, L.J.P.; Clynne, M.A.; Calvert, A.T.; Champion, D.E. (November 1, 2011). "Diverse, discrete, mantle-derived batches of basalt erupted along a short normal fault zone: The Poison Lake chain, southernmost Cascades". doi:10.1130/B30370.1.