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Published byAngela Brummitt
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Major Divisions of Earth Plate Tectonics
Different Properties Plate Tectonics
Rigid Plate Tectonics Plastic
The outer layer is the thinnest = Crust Two kinds of Crust Plate Tectonics
continental crust : thicker, light (granite) oceanic : thinner, dense (basalt) Plate Tectonics 2.7g/cm³ 3.3 g/cm³
Each Tectonic Plate: Oceanic crust or Oceanic & Continental crust Plate Tectonics
Each Tectonic Plate: Oceanic crust or Oceanic & Continental crust (none with continent only) Plate Tectonics
Oceanic crust or Oceanic & Continental crust Plate Tectonics
Active continental margin: leading edge of plate (earthquakes, volcanoes, steep mountains) Plate Tectonics
Passive continental margin: trailing edge of continent (eroded mountains, flat plains, little activity) Plate Tectonics
Active margin Passive margin
Plate Tectonics Classification of Plate Boundaries
Plate Tectonics I. Divergent Boundaries : tension = pull apart normal faults
Plate Tectonics I. Divergent Boundaries : tension = pull apart normal faults http://web.mala.bc.ca/earle/geol201/rift-valley2.gif
Plate Tectonics I. Divergent Boundaries : new ocean crust formed mid-ocean ridge with a rift valley down the middle
Plate Tectonics I. Divergent Boundaries : young basin
Plate Tectonics I. Divergent Boundaries : mature basin
Plate Tectonics I.Convergent Boundaries : compression = push together reverse faults
Plate Tectonics I.Convergent Boundaries : compression = push together reverse faults http://geology.wr.usgs.gov/parks/deform/hangfootwall.gif
Plate Tectonics I.Convergent Boundaries : folding & uplift earthquakes http://geology.wr.usgs.gov/parks/deform/hangfootwall.gif
Plate Tectonics Three kinds of Convergent Margins (Crust Type) oc - oc oc - cont. cont. - cont.
Plate Tectonics IIa. Ocean - Ocean deep sea trench subduction zone (recyle) volcanoes & uplift
Aleutians, Japan, Philippines, Indonesia
Plate Tectonics IIb. Ocean - Continent deep sea trench subduction zone (recycle ocean side) volcanoes & major uplift
Plate Tectonics IIb. Ocean - Continent
Plate Tectonics IIc. Continent - Continent collision no subduction, no vulconism (can't recyle continents) heat & pressure, folding & major uplift
Plate Tectonics IIc. Continent - Continent
Plate Tectonics III. Transform Plate boundaries shear = sliding past in opposite directions lateral movement with earthquakes
Plate Tectonics III. Transform Plate boundaries California San Andreas fault
Plate Boundaries. Earth’s outer layer is divided into many strong, moving lithospheric plates lithospheric Tectonic Plates Plate Tectonics.
Plate Tectonics. Theory of Plate Tectonics Earth’s crust and part of the upper mantle are broken into sections Sections of Earth’s crust = PLATES.
Tectonic Plate Boundaries and Their Effects
Which plate boundary is represented?. Convergent Boundary.
Plate Boundaries. Divergent Plate Boundary Description of Plate Boundary & Motion at Boundary: ON LAND – two plates spread apart; crust separates and.
Bell Work: September 3 Define The Plate Tectonic Theory What are some ways that plate tectonics change the surface of the earth?
The Theory of Plate Tectonics - Boundaries, Stresses, and Faults
Plate Tectonics Chapter 1 Section 5. Plates What is a plate? A plate is a piece of the lithosphere Plates fit closely together along cracks.
Major Geological Events
Plate Boundaries JOURNAL PAGE 65. The edges of the plates meet at lines called plate boundaries. When rocks slip past each other along these boundaries.
Plate Tectonics. The Earth’s Crust is Made of Plates.
Stress – force that pushes or pulls rock Tension Compression Shearing Fault – Break in Earth’s crust where plate movement occurs Normal Reverse Strike-Slip.
Theory of Plate Tectonics Plate Tectonics Plate Boundaries Causes of Plate Tectonics.
Plate Tectonics. The crust is broken into plates that float on the mantle. The crust is broken into plates that float on the mantle. Sometimes the plates.
Plate Boundaries and Motion
Falcon Focus Rank the four main layers of the earth from least dense to most dense. What causes the plate tectonics to move?
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