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"Tank tread" advance
1
Aa lava
1
Adaptive coloring
1
Alluvium
1
Basalt
1
Basaltic lava flows
1
Blafell
1
Blocky lava flows
1
Bonito flow
1
Breccia
1
Caldera
1
California
1
Cape Verdes
1
Cooling history
1
Corrugations
1
Costa Rica
1
Craters of the Moon
1
Crust
1
Dacite flow
1
Devil's Orchard
1
Drag
1
Drape
1
Etna
1
Extrusion
1
Field geology
1
Field photography
1
Filled lava tube
1
Fleener Chimneys
1
Flow direction
1
Fogo
1
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