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17 Cards in this Set
- Front
- Back
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Plate Tectonics
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Theory that the lithosphere is made of plates that float on the asthenosphere and that the plates possibly are moved by convection currents.
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Oceanic Crust
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Material that makes up Ocean Floor
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Continental crust
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Material that makes up continental landmasses
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Tectonics
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The study of the formation of features in the earth's crust
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Lithosphere
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Made up by the oceanic and continental crust and the rigid upper mantle. It forms the thin outer shell of the earth
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Asthenosphere
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Located under the Lithosphere. It's a layer of plastic rock and slowly flows when under pressure
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Divergent Boundary
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Plates that move apart, molten rock from the asthenosphere rises and fills the space between the plates
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Rift Valley
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a Narrow valley formed as the plates seperate.
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Convergent Boundary
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A direct collision of one plate with another makes another type of plate movement
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Subduction zone
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Region where one lithospheric plate moves under another
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Ocean Trench
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Deep alley in the Ocean floor that forms along a subduction
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Island Arc
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chain of volcanic islands formed along an ocean trench
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Transform Fault boundary
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boundary formed where two lithospheric plates slide past each other
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Convection
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Transform of heat through the movement of a fluid material
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Convection current
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movement in a fluid caused by uneven heating
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Terranes
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Piece of land with a geopolotic history distinct from that of the surrounding land
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Theory of suspect terranes
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the continents are actually a pathwork of terranes, pieces of of lithosphere
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