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Along the southeast rim of the inner depression of the volcano is an unfinished structure consisting of a concrete building embedded in the hill surrounded by two rings of concrete obelisks. The structure was apparently begun by a man named A. H. Hood, with the intention of generating wind power, in
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The butte has two peaks. The north peak has an elevation of 5,751 ft (1,753 m) and the south peak reaches 5,486 ft (1,672 m). The peaks are about 1000 feet above the surrounding valley floor. The butte is about 1.5 mi (2.4 km) in diameter at the base.
335:, or lacustrine terrace, formed by waves surrounds most of the volcano's lower rock. A vertical cliff, known as the Lace Curtain, is present on the north flank of the volcano, formed as a result of storm wave action. This name originated from the distinct white,
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emplacement. The uppermost part of the mound consists of moderately vesicular ash with lapilli, passing up into ripple-marked beds at the base of the overlying cone deposits. These beds are interpreted to represent the result of wave reworking.
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The
Pahvant Butte volcano consists of an asymmetrical tuff cone with a breach on its southwestern side — and a platform area that extends to the southeast of the cone, formed of beds of
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by a large eruption about 15,500 years ago. The water depth at the time of eruption is estimated to have been 85 m (279 ft). This eruptive activity probably ejected steam,
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White, J.D.L (2001). "Eruption and reshaping of
Pahvant Butte volcano in Pleistocene Lake Bonneville". In White J.D.L. & Riggs N.R. (ed.).
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The mound of sub-horizontally bedded tephra represents the first stage of the eruption. The ash grains are variably
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The platform consists of deposits formed by the erosion of the cone. These built out into the lake as a prograding
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563:. Special Publication of the International Association of Sedimentologists. Vol. 30. pp. 61–80.
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dipping steeply away from the cone, and partly concealing a mound of near horizontally-bedded
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activity, which involves direct interaction between magma and water. The layers of ash and
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The butte, sometimes called "Sugarloaf
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U.S. Geological Survey
Geographic Names Information System: Pahvant Butte
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Ring structure in 1974. The outer ring is about 55 m in diameter.
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USGS Pahvant Butte North, Utah and
Pahvant Butte South, Utah
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596:"Pahvant Butte in the Black Rock Desert, Millard County, Utah"
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The cone consists of steeply dipping layers of mainly
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Pahvant Butte was overlapped by the lava flows of the
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Volcaniclastic sedimentation in lacustrine settings
308:of the Pahvant field. The volcano was originally a
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452:"Story of Utah volcanoes may still be unfolding"
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498:7.5 Minute Topographic Quadrangles, USGS, 1971
232:and the Clear Lake Wildlife Management Area.
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681:Volcanic fields of the Great Basin section
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27:Geographic feature in Utah, United States
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178:Air photo of Pahvant Butte in 1978
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686:Landforms of Millard County, Utah
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290:Black Rock Desert volcanic field
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527:. June 11, 2003. Archived from
525:United States Geological Survey
521:"America's Volcanic Past: Utah"
204:in the west-central portion of
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618:"Black Rock Desert: Summary"
676:Buttes of the United States
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496:Pahvant Butte South, Utah,
450:Arave, Lynn (2001-12-26).
350:between 1140 and 1440 AD.
594:Case, William F. (2010).
492:Pahvant Butte North, Utah
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623:Global Volcanism Program
598:. Utah Geological Survey
413:or beach, forming large
691:Volcanic fields of Utah
628:Smithsonian Institution
284:Pahvant Butte, May 2015
228:and five miles east of
186:Oblique air photo, 2020
388:sediment gravity flows
370:History of development
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147:39.13167°N 112.55222°W
658:at Wikimedia Commons
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276:Geography and geology
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348:Ice Springs eruption
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44:Pahvant Butte, 2021
310:subaqueous volcano
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671:Volcanoes of Utah
654:Media related to
570:978-0-632-05847-1
259:Unusual Structure
208:, United States.
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125:Range coordinates
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631:. Retrieved
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18:Pavant Butte
376:vesiculated
341:cementation
294:Pleistocene
212:Description
150: /
138:112°33′08″W
665:Categories
466:2022-02-19
424:References
400:palagonite
354:Morphology
230:Clear Lake
135:39°07′54″N
392:ballistic
199:tuff cone
50:Geography
633:July 12,
418:foresets
322:basaltic
306:aa lavas
302:pahoehoe
298:Holocene
245:aa lavas
241:pahoehoe
164:Topo map
114:District
384:lapilli
292:of the
220:in the
202:volcano
197:) is a
88:Country
602:May 7,
576:10 May
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535:May 7,
360:tephra
272:1923.
193:(also
104:Region
411:delta
226:Delta
96:State
635:2010
604:2010
578:2010
565:ISBN
537:2010
494:and
337:lace
326:tuff
304:and
243:and
206:Utah
99:Utah
318:ash
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331:A
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
