evidence for plate tectonics
DESCRIPTION
Evidence for Plate Tectonics. By state inner core - solid outer core - liquid lower mantle - ductile solid asthenosphere - ductile solid lithosphere - rigid solid. Earth’s Interior. By composition core - Fe & Ni mantle crust. lithosphere. asthenosphere. Plate Tectonics. - PowerPoint PPT PresentationTRANSCRIPT
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Evidencefor
Plate Tectonics
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Earth’s Interior
By compositioncore - Fe &
Nimantlecrust
lithosphere
asthenosphere
By stateinner core - solidouter core - liquidlower mantle - ductile
solidasthenosphere -
ductile solidlithosphere - rigid
solid
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Plate TectonicsThe earth’s surface is made of
plates that move and interact.
plates are rigid lithospheremost activity is at the margins
of the platesthe plates are the surface
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Fit of the Continents
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Fit of the Continents
Fossil distribution
• Igneous & sedimentary rocks
• geologic structures
Glacial Deposits
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Seafloor Spreading
Age of the seafloor(measured with riometric dating, paleomag, sed thickness)
Shape of the seafloor
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Locations of Geologic Activity
earthquakes
volcanoes
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Hot Spots
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Measured Movement
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Measured Movement
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Causes of
Motionmantle
motionslab pullridge
push
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History of plate
movement