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Saturday, Jul 06, 2019
Coso volcano (California, USA (mainland exept Alaska)) activity update: Strong earthquake swarm- no cause for concern
The M7.1 earthquake has also triggered an earthquake swarm at the southern end of the volcanic field, with around 30 earthquakes per hour. read all
Tuesday, Dec 11, 2012
Coso volcanic field (California): seismic swarm coming to an end
The recent earthquake swarm at Coso Volcanic Field seems to be over. read all
 

Coso volcano

stratovolcano 2400 m / 7,874 ft
California, Canada and USA (mainland), 36.03°N / -117.82°W
Current status: normal or dormant (1 out of 5) | Reports
Coso volcano books
Last update: 29 Feb 2020 (Strong earthquake swarm- no cause for concern)
Typical eruption style: Explosive
Coso volcano eruptions: none during the past 10,000 years
TimeMag. / DepthDistanceLocation
Mon, 13 Jul 2020
Mon, 13 Jul 17:21 UTCM 1.3 / 2 km4 km9km E of Coso Junction, CA (USA)
Mon, 13 Jul 10:10 UTCM 0.9 / 4.7 km20 km19km ESE of Little Lake, CA (USA)
Mon, 13 Jul 05:36 UTCM 1.6 / 2.4 km28 km30km NNW of Searles Valley, CA (USA)
Mon, 13 Jul 02:36 UTCM 2.3 / 2.4 km18 km20km E of Little Lake, CA (USA)
Mon, 13 Jul 01:44 UTCM 0.9 / 4.5 km22 km21km ESE of Little Lake, CA (USA)
View all recent quakes
The Coso volcanic field is located east of the Sierra Nevada Range at the western edge of the Basin and Range province, California. It consists of 38 old rhyolitic lava domes and basaltic cinder cones covering a 400 sq km area. volcano is located 200 km north of Los Angeles, California.
Eruptions in this area over the past 4 million years produced 35 km3 of lava, the youngest eruptions are probably from the basaltic Volcano Peak cinder cone and occurred more than 33,000 years ago.
Coso Geothermal System
There is geothermal activity in an ENE trending zone between Sugarloaf Mountain and the Coso Hot Springs. The Coso Hot Springs have fumaroles and intermittently active geysers. Fumaroles at Devils Kitchen and the adjacent Nicol area are located in an explosion crater surrounding a rhyolite lava dome.

Background:

The latest dated eruption formed the Volcano Peak basaltic cinder cone and lava flow and was Potassium-Argon dated at 39,000 +/- 33,000 years ago, but the youngest lava dome may even be younger than 11,000 years ago.
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Source: Smithsonian / GVP volcano information


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