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Ubehebe Craters volcano

explosion craters (maars) 752 m / 2,467 ft
California, USA (mainland exept Alaska), 37.02°N / -117.45°W
Current status: dormant (1 out of 5)
Ubehebe Craters volcano books
Typical eruption style: Explosive
Ubehebe Craters volcano eruptions: 800-6000 years ago
TimeMag. / DepthDistanceLocation
Wed, 18 Oct
Wed, 18 Oct 10:03 UTCM 1.3 / 13 km23 km- 52km WNW of Beatty, Nevada
Wed, 18 Oct 10:02 UTCM 1.1 / 18.8 km21 km- 56km WNW of Beatty, Nevada
Wed, 18 Oct 04:25 UTCM 2.0 / 12 km34 kmCENTRAL CALIFORNIA
Tue, 17 Oct
Tue, 17 Oct 12:33 UTCM 0.2 / 6.6 km48 km- 38km SW of Beatty, Nevada
Sat, 14 Oct
Sat, 14 Oct 06:20 UTCM 0.4 / 1.1 km8 km- 65km NE of Lone Pine, California
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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.

Background:

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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