Helge Gonnermann

Volcanoes, Magmatic Processes, Fluid Flow
Department of Earth Science
Rice University

California Cascades & Northern Sierras, October 2017

Pyramid Peak Granite (Anna Barth)

Lava Tube, Medicine Lake Volcano: Oliver, Anna, Eytan, Jose, Patrick, Michael, Maria

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Group Photo on Mount Hoffman: Helge, Jose, Eytan, Oliver, Michael, Patrick, Anna (Anna Barth)

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Mono Lake (Anna Barth)

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Mount Hoffman (Anna Barth)

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Twin Lakes (Anna Barth)

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Easter Sierras Roof Pendant (Anna Barth)

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Eastern Sierra Glacial Valley and Moraine (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Pyramid Peak Granite (Anna Barth)

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Big Glass Mountain Obsidian/Pumice, Medicine Lake Volcano (Anna Barth)

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Big Glass Mountain Obsidian/Pumice, Medicine Lake Volcano (Anna Barth)

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Smoke from Santa Rosa? (Anna Barth)

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Mount Shasta and Little Glass Mountain (Anna Barth)

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Mount Shasta (Anna Barth)

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Mount Shasta Debris Avalanche (Anna Barth)

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Mount Shasta (Anna Barth)

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Mount Shasta Debris Avalanche (Anna Barth)

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Mounta Shasta Debris Avalanche (Anna Barth)

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Mount Shasta Andesite Flow (Anna Barth)

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Vesicles (Anna Barth)

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Lava Tube, Medicine Lake Volcano (Anna Barth)

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Lava Tube, Medicine Lake Volcano (Anna Barth)

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Lava Tube with Oliver, Patrick, Michael and Jose, Medicine Lake Volcano (Anna Barth)

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Pahoehoe, Medicine Lake Volcano (Anna Barth)

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Big Glass Mountain Obsidian/Pumice, Medicine Lake Volcano (Anna Barth)

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Big Glass Mountain Obsidian/Pumice, Medicine Lake Volcano (Anna Barth)

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Looking East from Glass Mountain Pumice Mine (Anna Barth)

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Cinder Cone with Lassen Peak (Anna Barth)

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Cinder Cone (Anna Barth)

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Cinder Cone with Lassen Peak (Anna Barth)

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Cinder Cone (Anna Barth)

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Pyramid Peak Granite with Maria, Jose, Helge, Oliver, Patrick and Eytan (Anna Barth)

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Pyramid Peak Granite

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Pyramid Peak Granite

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Pyramid Peak Granite

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Pyramid Peak Granite

Twin Lakes

Twin Lakes

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Pyramid Peak Granite

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Twin Lakes

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Anna Barth

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Pyramid Peak Granite

Pyramid Peak Granite

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Pyramid Peak Granite

Pyramid Peak Granite

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Pyramid Peak Granite

Dinner

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Cinder Cone

Helge (Cinder Cone)

Helge (Cinder Cone)

Cinder Cone

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Cinder Cone

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Stretched Vesicles

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Stretched Vesicles

© hmg 2016