Destructive Plate Margins: Features/landforms: Fold mountains Thrust faults Negligible volcanism Regional metamorphism Shallow focus earthquakes (SFQ)

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Presentation transcript:

Destructive Plate Margins: Features/landforms: Fold mountains Thrust faults Negligible volcanism Regional metamorphism Shallow focus earthquakes (SFQ) Gneiss Thickening of crust Processes: Mountain Building (Orogenesis) Folding Faulting Metamorphism Crustal Thickening Continental-Continental collision

Plate Boundaries

What are the main differences between Continent-Continent Collision and Oceanic-Oceanic/Oceanic–Continental Collision ? Continent-ContinentOceanic/Continent Negligible volcanismVolcanoes = andesitic rock Shallow EarthquakesDeep and Shallow Earthquakes Extensive granite generation and regional metamorphism Minor granite generation and localised metamorphism Extensive shortening of continental crust – associated thrust faulting Extensive shortening of oceanic crust – localised thrust faulting

Conservative Plate Margins: Features/landforms: Shallow focus earthquakes (SFQ) Fault scarps Lateral fault movement Tear/wrench fault (Strike/Slip) Fault zone San Andreas Fault Processes: Lateral plate movement Pressure build up Stress release Fault Displacement

Plate Boundaries Why are conservative margins so hazardous to humans ?

Plate Boundaries

Plate Tectonics

Characteristics of Plates LITHOSPHERE

Heat Flow

Plate Tectonics Assessment Plate Tectonics Assessment – For Monday Morning ALL homework to be handed on Monday morning