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209_20 - GL GY 209 I NTRODUCTI ON TO GEOL OGY Ocean...

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GLGY 209: INTRODUCTION TO GEOLOGY
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Ocean Formation Model
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Ocean Formation Model
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Oceanic Crust Generation Question: Where is the Consumption?
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Benioff Plane
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Oceanic Crust Consumption Zones of consumption of oceanic crust are regarded as convergent zones. Subduction and therefore consumption can occur either between plates consisting of oceanic crust or between plates with different constitution (continental vs. oceanic). Subduction is accompanied by volcanism, crustal movements resulting in sediment folding and faulting, earthquakes, etc.
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Wilson Cycle Wilson Cycle represents the cycle of birth, evolution and close-up of an oceanic basin.
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Example of an Oceanic Basin Close-up
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Present Day Plates
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Sedimentary Basins A sedimentary basin is an area of the Earth’s crust that is characterized by a particular tectonic regime and is overlain by a generally thick pile of sediments accumulated under a variety of sedimentary environments. Sedimentary basin classification follows the plate tectonic concepts.
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TECTONIC REGIMES (~ SETTINGS) INTRAPLATE TECTONIC REGIME; DIVERGENT ~; CONVERGENT ~; TRANSFORM ~.
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