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Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|5550 BCE ± 2500 years||Unknown||Confirmed||Tephrochronology||Groundhog Crater|
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
California Div. Mines and Geology, 1958-69. Geologic atlas of California, 1:250,0000 scale.. Calif Div Mines Geol.
Miller C D, 1989. Potential hazards from future volcanic eruptions in California. U S Geol Surv Bull, 1847: 1-17.
Moore J G, Lanphere M, 1983. Age of the Golden Trout Creek volcanic field, Sierra Nevada, California (abs). Eos, Trans Amer Geophys Union, 64: 895.
Webb R W, 1950. Volcanic geology of Toowa valley, southern Sierra Nevada, California. Geol Soc Amer Bull, 61: 349-357.
The Golden Trout Creek volcanic field consists of a group of Quaternary alkali olivine basaltic cinder cones and lava flows in the Toowa valley of the Sierra Nevada about 25 km south of Mount Whitney. Lava flows from the Golden Trout Creek volcanic field erupted through Mesozoic granitic rocks of the Sierra Nevada batholith during several episodes dating back to about 743,000 years ago, when the Little Whitney cinder cone and lava flows were erupted. The South Fork cone was erupted about 176,000 years ago and produced the largest lava flow of the volcanic field, which traveled 10 km to the west, possibly as far as the floor of Kern Canyon. Tunnel cone to the north of South Fork (Red Hill) cone is undated, but its lava flow is overlain by glacial deposits and it is thought to be only slightly younger than South Fork cone. The youngest lava flow, from Groundhog cone, is unglaciated and thought to be about 5-10,000 years old (Moore and Lanphere 1983). The lava flow from Groundhog cone traveled 6 km west down Golden Trout Creek on top of the older flow from South Fork cone.