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Key terms: tuff ash lava beds volcanic quartz eruption deposits fragments volcanoes masses crystals breccia pumice maar moai rhyolite cleaved welded tuff chlorite magma rounded igneous augite feldspar scoria glassy sedimentary weathered servian calcite olivine ejected biotite schists kimberlite ash beds vesuvius crystalline vesicular charnwood hornblende pyroclastic glass shards volcanic eruption lake district trachyte tuffs basaltic tuffs recrystallized ultramafic tuffs Search external links cited by footnotes on Wikipedia page Tuff: |
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