Glossary: Volcanology
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May 13, 2021
Aa flows: Massive lava flows that grade upward to a chaotic jumble of blocky and
Day: May 13, 2021
Glossary: Structural geology
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May 13, 2021
Angle of internal friction: A rock or material property that refers to its ability to
Glossary: Geofluids – hydrogeology
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May 13, 2021
Advective fluid flow: The flow of fluids through a porous medium; in this case only
Glossary: Geochemistry and diagenesis
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May 13, 2021
Absolute zero: The theoretical temperature, measured in degrees Kelvin (K), where the kinetic energy of
Glossary: Petrography and petrology
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May 13, 2021
Actinolite: see Tremolite Aegirine – aegirine augite: NaFe3+(SiO3)2 Clinopyroxenes at the alkali end of the
Glossary: Sedimentary basins and tectonics
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May 13, 2021
Accretionary prism: Accretionary prisms are wedge-shaped stacks of oceanic sediment and some volcanic rock scraped
Glossary: Sedimentary structures
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May 13, 2021
Angle of repose: The natural slope of loose, cohesionless sedimentary particles (sand, gravel) under static
Glossary: Stratigraphy
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May 13, 2021
Glossary of sequence stratigraphy, stratigraphic terminology, stratigraphic concepts and philosophy, and depositional systems. A/S ratio
Glossary: Sedimentary facies and processes
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May 13, 2021
Ablation: The removal of ice and snow by melting, evaporation, wind erosion, sublimation (solid to
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