2. TECTONICS: From the Greek “tecton”
builder
architect
The study of large features on Earth’s surface and the processes that formed them.

3. PLATE TECTONICS: Lithosphere – crust of the Earth.
Plate Tectonics - a theory explaining the structure of the Earth's crust and many associated phenomena (earthquakes, volcanoes, etc.) resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.

4. Boundaries
The places where tectonic plates meet are called plate boundaries.
Types:
Convergent (Subduction Zone)
Divergent (Sea floor spreading)
Transform

5. Cracked Egg Shell!

6. Parks and Plates
©2002 Robert J. Lillie

14. DIVERGENT Plate Boundary: Seafloor Spreading

15. DIVERGENT Plate Boundary: Seafloor Spreading

17. CONVERGENT Plate Boundary

18. Coastal Mountain Range Composite Volcanoes Plate Sweats
Sediment and Basalt Scraped off Subducting Plate
Plate Sweats

21. North American Plate
Pacific Plate

22. Pacific Plate North American Plate 2 inches/year x 100 years
= 17 feet!
North American Plate
Pacific Plate

25.  14,000 feet
Mauna Kea
 14,000 feet
Mauna Loa

26. TALLER THAN MOUNT EVEREST!
18,000 ft below sea level
14,000 feet above sea level