VOW: Golden Trout Creek
A cluster of 66 shocks have rocked a a 15 square km area centered about 36.392°N, 117.861°W, some 41 km east of the Golden Trout Creek volcano field in central California, in the past few days. Although most of the quakes were tremors measuring less than M 3.0, the largest shock measured 5.2.
Volcano Details:
Country: United States
Region: California (USA)
Volcano Type: Volcanic field
Volcano Status: Tephrochronology
Last Known Eruption: 5550 BC ± 1000 years
Summit Elevation: 2,886 m (9,468 feet)
Latitude: 36.358°N (36°21’30″N)
Source: Global Volcanism Program (GVP)
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.—GVP. Photo: Rick Howard, 2002 (courtesy of Del Hubbs, U S Forest Service).
SI /USGS Weekly Volcanic Activity Report
(23 September – 29 September 2009)
New activity/Unrest:
- Dieng Volcanic Complex, Central Java (Indonesia)
- Karymsky, Eastern Kamchatka
- Shiveluch, Central Kamchatka (Russia)
News From GVP:
CVGHM reported that on 26 September a “thunderous” noise from Dieng was heard from 2 km away. The next day, a phreatic eruption from an unspecified crater ejected mud as far away as 140 m S.
KVERT reported that on 17 and 22 September a weak thermal anomaly over Karymsky was detected in satellite imagery. Scientists flying near Karymsky in a helicopter on 22 September saw ash plumes that rose to an altitude of 1.7 km (5,600 ft) a.s.l. and drifted E. —GVP
Ongoing Activity:
- Batu Tara, Komba Island (Indonesia)
- Chaitén, Southern Chile
- Dukono, Halmahera
- Kilauea, Hawaii (USA)
- Langila, New Britain
- Rabaul, New Britain
- Redoubt, Southwestern Alaska
- Sakura-jima, Kyushu
- Turrialba, Costa Rica
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