| 词条 | Black Rock Desert volcanic field |
| 释义 |
The Black Rock Desert volcanic field in Millard County, Utah, is a cluster of several volcanic features of the Great Basin such as Pavant Butte and Tabernacle Hill.[1] The field's Ice Springs event was an explosive eruption followed by lava flows that were Utah's most recent volcanic activity (1140–1440 AD).[2] which overlapped the older flows of Pavant Butte.[1] The Pleistocene-Holocene field has been an active tectonic area for approximately 2.7 million years. Within the past 1.5 million years, local volcanism has produced both rhyolitic and basaltic cones from near twenty-four vents from which lava escapes through geologic faults.[3] References{{Commons category|Black Rock Desert volcanic field}}1. ^1 {{cite web|url=http://www.volcano.si.edu/world/volcano.cfm?vnum=1207-05-|title=Black Rock Desert: Summary|publisher=Smithsonian Institution|work=Global Volcanism Program|accessdate=July 12, 2010}} {{Coord|38|58|12|N|112|30|00|W|format=dms|display=title|type:landmark_scale:1000000_region:US-UT}}2. ^{{cite web|url=http://www.volcano.si.edu/world/volcano.cfm?vnum=1207-05-&volpage=erupt|title=Black Rock Desert: Eruptive History|publisher=Smithsonian Institution|work=Global Volcanism Program|accessdate=July 12, 2010}} 3. ^{{cite web|url=http://geology.utah.gov/surveynotes/geosights/pahvantbutte.htm|title=Pahvant Butte in the Black Rock Desert, Millard County, Utah|author=Case, William F.|year=2010|publisher=Utah Geological Survey|accessdate=May 7, 2010}} 3 : Landforms of Millard County, Utah|Volcanic fields of the Great Basin section|Volcanic fields of Utah |
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