Field Guides
Field Guides
Ten stops were chosen from published scientific field guides and from California Volcano Observatory field trip notes to represent the geology of the area.
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Long Valley Caldera Field Guide
Ten stops were chosen from published scientific field guides and from California Volcano Observatory field trip notes to represent the geology of the area.
Vertical columns of volcanic rock at Devils Postpile National Monument
A spectacular display of a columnar-jointed basalt flow.
Long Valley Caldera Field Guide - Glass Creek Flow
Example of two magmas that mixed during an eruption.
Long Valley Caldera Field Guide - Horseshoe Lake
Volcanic carbon dioxide can kill trees and is a hazard to animal life.
Long Valley Caldera Field Guide - Hot Creek Geologic Site
Blue pools and impressive boiling fountains along Hot Creek.
Long Valley Caldera Field Guide - Inyo Craters
Three young (1350 CE) craters formed by phreatic, or steam-driven, eruptions.
Long Valley Caldera Field Guide - Lookout Mountain
A good vantage point for viewing the region.
Long Valley Caldera Field Guide - Mammoth Mountain
Hike, ski, or bike on a series of domes. A good vantage point for seeing entire Caldera.
Long Valley Caldera Field Guide - Mono Lake
A beautiful saline lake with tufa towers.
Long Valley Caldera Field Guide - Obsidian Dome
At the top of an obsidian dome, view rocks that look different but have the same composition.
Long Valley Caldera Field Guide - Panum Crater
A tephra ring and dome, plus pumice and banded obsidian.