the largest swarm of earthquakes at long valley took place 110, 000 to 57, 000 years ago.
the largest swarm of earthquakes at long valley took place 110, 000 to 57, 000 years ago.
when did the largest swarm of earthquakes at long valley take place?
110, 000 to 57, 000 years ago
in may 1980, a strong earthquake swarm that included four richter magnitude 6 earthquakes struck the southern margin of the long valley caldera. it was associated with a 10-inch (250 mm) dome-shaped uplift of the caldera floor. these events marked the onset of the latest period of caldera unrest that is ongoing. this ongoing unrest includes recurring earthquake swarms and continued dome-shaped uplift of the central section of the caldera accompanied by changes in thermal springs and gas emissions. after the quake, another road was created as an escape route. its name at first was proposed as the "mammoth escape route" but was changed to the mammoth scenic loop after mammoth area businesses and land owners complained.
long valley caldera
long valley









































long valley may refer to:









































bullet::::- long valley caldera in california









































bullet::::- long valley, lassen county, california









































bullet::::- long valley, california, former name of greenwood, el dorado county, california









































bullet::::- long valley, hong kong









































bullet::::- long valley, new jersey









































bullet::::- long valley, arizona









































bullet::::- long valley, south dakota









































bullet::::- long valley, hampshire, england









































bullet::::- long valley (lake county, california)









































bullet::::- long valley (nevada)









































bullet::::- long valley (kane county, utah), stretching along us-89 from long valley junction (sr-14) south to mt. carmel junction (sr-9)
long valley