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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.
Long Valley Caldera Field Guide

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.
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Vertical columns of volcanic rock at Devils Postpile National Monument

Vertical columns of volcanic rock at Devils Postpile National Monument

A spectacular display of a columnar-jointed basalt flow.
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Long Valley Caldera Field Guide - Glass Creek Flow

Example of two magmas that mixed during an eruption.
Long Valley Caldera Field Guide - Glass Creek Flow

Long Valley Caldera Field Guide - Glass Creek Flow

Example of two magmas that mixed during an eruption.
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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 - Horseshoe Lake

Long Valley Caldera Field Guide - Horseshoe Lake

Volcanic carbon dioxide can kill trees and is a hazard to animal life.
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Long Valley Caldera Field Guide - Hot Creek Geologic Site

Blue pools and impressive boiling fountains along Hot Creek.
Long Valley Caldera Field Guide - Hot Creek Geologic Site

Long Valley Caldera Field Guide - Hot Creek Geologic Site

Blue pools and impressive boiling fountains along Hot Creek.
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Long Valley Caldera Field Guide - Inyo Craters

Three young (1350 CE) craters formed by phreatic, or steam-driven, eruptions.
Long Valley Caldera Field Guide - Inyo Craters

Long Valley Caldera Field Guide - Inyo Craters

Three young (1350 CE) craters formed by phreatic, or steam-driven, eruptions.
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Long Valley Caldera Field Guide - Lookout Mountain

A good vantage point for viewing the region.
Long Valley Caldera Field Guide - Lookout Mountain

Long Valley Caldera Field Guide - Lookout Mountain

A good vantage point for viewing the region.
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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 - Mammoth Mountain

Long Valley Caldera Field Guide - Mammoth Mountain

Hike, ski, or bike on a series of domes. A good vantage point for seeing entire Caldera.
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Long Valley Caldera Field Guide - Mono Lake

A beautiful saline lake with tufa towers.
Long Valley Caldera Field Guide - Mono Lake

Long Valley Caldera Field Guide - Mono Lake

A beautiful saline lake with tufa towers.
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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 - Obsidian Dome

Long Valley Caldera Field Guide - Obsidian Dome

At the top of an obsidian dome, view rocks that look different but have the same composition.
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Long Valley Caldera Field Guide - Panum Crater

A tephra ring and dome, plus pumice and banded obsidian.
Long Valley Caldera Field Guide - Panum Crater

Long Valley Caldera Field Guide - Panum Crater

A tephra ring and dome, plus pumice and banded obsidian.
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