Review of plate boundaries:

Everything in one easy picture:

1)DIVERGING PLATE BOUNDARYMID OCEANIC RIDGESRIFT VALLEYSVOLCANOESEARTHQUAKESEx: mid Atlantic Ridge and African rift valleySEE PAGE 92

                                                                                          

Iceland:

2) CONVERGING PLATE BOUNDARY

DEEP OCEANIC TRENCHESSUBDUCTION ZONESEXTREME CONTINENTAL MOUNTAIN BUILDINGEx: Marianas Trench, Peru-Chile Trench, Himilayan mountainsSee page 103-104

Oceanic VS. Continental: Peru-Chile Trench: deep water and Andes Mountains

Andes Mountains:

Oceanic VS. Oceanic:Marianas Trench in Pacific: very deep water

Japan Trench fissure at 6200 m.

Continental VS. Continental:Himilayas: extreme mountains

Mt. Everest:

Everest in better perspective:

3) TRANSFORM BOUNDARIESLONG FAULT LINESEXTREME EARTHQUAKESEx: San Andreas FaultSee pg. 97

San Andreas:

4) SPECIAL “HOTSPOTS”

Caused by hotspots in the aesthenosphere, volcanoes can appear even in the middle of a plate. As the plate moves slowly, one hotspot can create a chain of volcanoes. Best example is the Hawaiian island arc.

Hawaiian Island Arc:

Mauna Loa Volcano

Mauna Loa lava flow

WORLD TECTONIC PLATES

WORLD TECTONIC ACTIVITY

Marianas/Japan Trench

Japan

Hawaii

Pacific N.W., Cascade Volcanoes

San Andreas Fault

Peru-Chile Trench

Mid Atlantic Ridge, Iceland

African Rift Valley

Himilayan Mountains