1. Theory of Plate Tectonics ll
By: Enrico Romeo F. Abanales
References: whybecausescience.com

2. What evidences do we now have for the Theory of Plate Tectonics?
Fossil Distribution
existence of plate tectonics
discovery of very similar fossils
Examples:
India: Triassic land reptile; Lystrosaurus
South America: Triassic land reptile; Cynognathus
Freshwater reptile; Mesosaurus
Antartica: fern; Glossopteris
References:

3. Lystrosaurus fossil
References: en.wikipedia.org

4. Cynognathus
References:

5. Mesosaurus
References: commons.wikimedia.org

6. Glossopteris fossil
References: commons.wikimedia.org

7. Paleomagnetism Iron-rich magnetic minerals Ferromagnetism Solidifying
Magnetite
present in basaltic lava flow
Ferromagnetism
Curie temperature; 1043K
850 K (580°C); magnetite
Solidifying
slightly magnetized
direction of Earth's magnetic field
References:

8. What drives the plates? Harry Hess' theory 1930s by Arthur Holmes
plate-driving force
slow movement of hot, softened mantle
rigid plates
1930s by Arthur Holmes
English geologist
seafloor spreading
circular motion
continents
conveyor belt
References:

9. Earth; solid, motionless body J. Tuzo Wilson
1968
"The earth, instead of appearing as an inert statue, is a living, mobile thing."
Earth's surface
interior
lithospheric plates
mantle
molten
steady forces
References:

10. Slab Pull Slab Pull slab pull force subducting plate mantle
primary force
collisional zones (Wilson, 1993)
slab pull force
subducting slab
circulation patterns
dominant force (Conrad and Lithgow-Bertelloni, 2002)
References:
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11. References: www.haikudeck.com

12. Ridge Push leading contributor Bott (1991) slab pull slab pull acting
two main models of ridge push
Bott (1991)
'gravity wedging'
'gravity sliding‘
dominant model
References:
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13. Ridge Push
References:

14. Do you guys have any questions?
Thanks for Watching!
Do you guys have any questions?