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Ubehebe Craters Vulkan

explosion craters (maars) 752 m / 2,467 ft
California, Canada and USA (mainland), 37.02°N / -117.45°W
Aktueller Status: normal / ruhend (1 von 5) | Berichte
Ubehebe Craters Vulkan-B cher
Typische Aktivität: Explosiv
Ausbrüche des Ubehebe Craters: 4050 BC (?)
UhrzeitMag. / TiefeDistanceOrt
Mon, 6 Apr 2020
Mon, 6 Apr 18:28 UTCM 0.8 / 10.1 km24 km43km NE of Lone Pine, California (USA)
Thu, 2 Apr 2020
Thu, 2 Apr 08:16 UTCM 0.318 km60km WNW of Beatty, Nevada (USA)
Thu, 26 Mar 2020
Thu, 26 Mar 23:28 UTCM 0.6 / 8.4 km7 km58km WNW of Beatty, Nevada (USA)
Thu, 19 Mar 2020
Thu, 19 Mar 19:45 UTCM 0.6 / 12.7 km16 km59km S of Goldfield, Nevada (USA)
Tue, 17 Mar 2020
Tue, 17 Mar 00:51 UTCM 0.9 / 10.9 km17 km60km SSW of Goldfield, Nevada (USA)
Alle anzeigen
Ubehebe Craters volcano is a group of maars (explosion craters) located at the western margin of Tin Mountain, California, in the northern end of Death Valley. The craters were thought to have last erupted about 6000 years ago, but a recent study suggests that some activity could have occurred as little as 800 years ago.

Beschreibung:

The Ubehebe Craters consist of an isolated group of overlapping maars formed during eruptions of alkali basalt along a fault cutting fanglomerate deposits on the flanks of Tin Mountain in Death Valley National Park. Ubehebe Crater is a 0.8-km-wide, 235-m-deep maar surrounded by a tuff ring. Little Hebe Crater, the second youngest vent, is located immediately south of Ubehebe Crater and is a small tuff cone with a 100-m-wide crater overlain by pyroclastic-surge deposits. At least a dozen craters are located within an area of 3 sq km, and bedded pyroclastic-surge deposits cover an area of 15 sq km. Early scoria cone formation was followed by hydrovolcanic explosions that formed two clusters of explosion craters and tuff rings. The age of volcanism at Ubehebe is not dated precisely, but the lack of erosional modification of pyroclastic-surge deposits suggests that the youngest activity, from the largest crater, Ubehebe Crater, is Holocene in age. Relationships between Ubehebe tephra and approximately dated archeological artifacts suggests an age of about 6000 years.
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from: GVP Ubehebe Craters information


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