Volcanoes, Oceans, and Seawater Composition: Key Concepts
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Chapter 7: Volcanoes & Chapter 10: Restless Ocean
Volcanic Eruptions
Eruptions can be explosive (gases escape from melt) or quiescent ("Hawaiian" very fluid basaltic lavas).
Volcano Types
Volcano types include shield volcanoes (accumulation of fluid basaltic lavas, exhibit shape of broad domed structure) and composite volcanoes (large, nearly symmetrical, persistent eruption of viscous lava, conical shape).
Viscosity: Determined by temperature, composition, and amount of dissolved gases – how resistant to flow.
Pyroclastics: Pulverized rock, lava, and glass fragments ejected from vent.
Chapter 9: Oceans
Ocean Features
Continental Shelf: The gently sloping submerged portion of the continental margin that extends from the shoreline to the continental... Continue reading "Volcanoes, Oceans, and Seawater Composition: Key Concepts" »