TECTONICS: From the Greek “tecton”

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Presentation transcript:

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

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.

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

Cracked Egg Shell!

Parks and Plates ©2002 Robert J. Lillie

DIVERGENT Plate Boundary: Seafloor Spreading

DIVERGENT Plate Boundary: Seafloor Spreading

CONVERGENT Plate Boundary

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

North American Plate Pacific Plate

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

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

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