Igneous Activity and Metamorphic Rocks - Part 1

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Mt. Etna

Hawaii Volcanoes Mouna Loa and Kilauea

*Pahoehoe Lava(Photo © Duncan Heron) Craters of the Moon National Monument

Lava Pressure Ridge (Photo by © Duncan Heron) Craters of the Moon National Monument

Lava Tube (Photo by David Page)

People in Lava Cave (Photo © Duncan Heron) Craters of the Moon National Monument

*Aa Lava (Photo © Duncan Heron) The Malpais, NM

Block Lava (Photo © Duncan Heron) Craters of the Moon

Flow Breccia (Photo by © Duncan Heron) Yellowstone National Park

West Yellowstone Flow (Photo © Duncan Heron)

The Malpais Flow near White Sands, NM

Pillow Lava Tubes (Photo by Jeff Karson)

*Pillow Lava (Photo by Steve Hurst)

Tiatia Volcano Eruption (Photo from NASA)

Cinders (Photo © Duncan Heron) Craters of the Moon

Cinder Cone (Photo © Duncan Heron) Craters of the Moon

World Distribution of Pinatubo Ash (Source Unknown)

Duke University Chapel (Photo © Duncan Heron)

*Duke Stone Meta-Tephra (Photo © Duncan Heron)

Grits Cooking (Photo © Duncan Heron)

Mt Pelee, Martinique (Photo © Duncan Heron)

Glowing Avalanch Deposit (Photo © Duncan Heron) From Mt. Pelee, Martinique

Eno River Rapids (Photo © Duncan Heron) Fews Ford, Eno River State Park, NC

Tephra Fragments on Eno River at Fews Ford (Photo © Duncan Heron) Eno River State Park, NC

Tephra Fragments on  Eno River at Fews Ford (Photo © Duncan Heron) Eno River State Park, NC

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