Long Valley Caldera

E57336

caldera supervolcano volcanic depression

Long Valley Caldera is a large volcanic depression in eastern California known for its geothermal activity, seismic unrest, and proximity to the Sierra Nevada and Mammoth Lakes.

Aliases (6)

Long Valley Caldera (portion) ×1
Long Valley Caldera region ×1
Long Valley in the San Jacinto Mountains ×1
Long Valley near Mammoth Lakes ×1
Long Valley volcanic region ×1
Mono–Inyo Craters ×1

Statements (49)

Predicate	Object
instanceOf	caldera → supervolcano → volcanic depression →
approximateArea	about 450 square kilometers →
approximateLength	32 kilometers →
approximateWidth	17 kilometers →
country	United States →
elevation	about 2,100–3,400 meters above sea level →
eruptionType	explosive →
formationCause	catastrophic explosive eruption →
geologicAge	Pleistocene →
geothermalDevelopmentArea	Casa Diablo power plants →
hasFeature	Bishop Tuff → fumaroles → geothermal activity → hot springs → hydrothermal systems → resurgent dome →
hasNearbyFeature	Casa Diablo geothermal field → Hot Creek geothermal area → Mammoth Lakes →
hazardType	ash-fall hazard → hydrothermal explosions → pyroclastic flows (in large eruptions) → volcanic gas emissions →
isSubjectOf	geophysical research → volcano hazard assessments → volcanological studies →
lastMajorEruption	about 760,000 years ago →
lastMajorEruptionProduct	Bishop Tuff →
locatedIn	Mono County, California → eastern California →
locatedNear	Mammoth Lakes, California → Mammoth Mountain → Sierra Nevada →
monitoredBy	USGS California Volcano Observatory →
monitoredFor	gas emissions → ground deformation → seismic activity →
nearbyPopulationCenter	Town of Mammoth Lakes →
overseenBy	United States Geological Survey →
partOf	Basin and Range Province → Long Valley volcanic region →
riskLevel	potentially active volcano →
shows	ground uplift episodes → seismic unrest →
tectonicSetting	extensional regime →
usedFor	geothermal power generation →
volcanicArcOrBelt	Basin and Range extensional province →

Referenced by (12)

Subject (surface form when different)	Predicate
Eastern California → Eastern Sierra → Inyo National Forest ("Long Valley Caldera (portion)") →	contains
Hot Creek Geological Site → Long Valley Caldera ("Long Valley volcanic region") →	partOf
Owens River →	flowsThrough
Horseshoe Lake (Mammoth Lakes, California) ("Long Valley Caldera region") →	geologicalSetting
Mammoth Lakes area →	hasNearby
Mono Basin ("Mono–Inyo Craters") →	hasVolcanicField
USGS California Volcano Observatory →	monitors
Owens River ("Long Valley near Mammoth Lakes") →	sourceRegion
Palm Springs Aerial Tramway ("Long Valley in the San Jacinto Mountains") →	terminus