jeudi, févr. 21, 2013
A small swarm of earthquakes has been occurring under the SE shore area of the Salton Sea during the past few days, but the recorded quakes are very small and should not be reason to worry. [details]
mardi, oct. 30, 2012
A recent study indicates that the rhyolite lava domes in the Salton Sea area are less than 3,000 years old, which confirms that the volcanic system is to be considered potentially active. ... [details]
Salton Buttes volcanLe champ volcanique de Salton Buttes compose de 5 petits dômes de lave rhyolitiques construit au-dessus des sédiments du delta du fleuve Colorado dans le champ géothermique Salton Sea, situé à la marge SE de la Salton Sea en Californie.
Introduction:Recent dating of young zircons (which typically crystallize prior to eruption) place the date of the lava domes at 10,300 +/- 1000 years ago, consistent with early Holocene hydration rind dates from Obsidian Butte. Wave-cut benches originating from Lake Cahuilla, which existed from about 20,500 to 3000 years ago, prior to the 20th century formation of the Salton Sea due to an accidental spill-over of the Colorado River, are found on all of the domes. Older, sediment-buried Pleistocene rhyolitic lava domes have been found in geothermal drill holes. The Salton Sea geothermal field produces saline geothermal brines.
Source: GVP Salton Buttes information
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