PLATE TECTONICS

PLATE TECTONICS

• Plate tectonics is the theory that the earths outer shell glides across tne mantle

CAUSE OF PLATE MOVEMENT 1

• Convection currents in the mantle

CAUSE OF PLATE MOVMENT 2

• Ridge push is when the mantle wells upward and elevates the edges of spreading oceanic plates

CAUSE OF PLATE MOVMENT 3

• Slab pull Is the portion of motion of a tectonic plate that can be accounted for by its subduction

DIVERGENT PLATE BOUNDARY

• Is a linear feature thst exists between two tectonic plates that are moving away from each other

RESULTING LANDFORM FROM DIVERGENT PLATE BOUNDARY (LAND)

• A Rift Valley is a large elongated depression with deep walls formed by the downward

RESULTING LANDFORM FROM DIVERGENT PLATE BOUNDARY (OCEAN)

• A mid ocean ridge is a underwater mountin range fromed by tectonic plates

CONVERGENT BOUNDARY

• Its a destructive plate boundary and is a activley deforming region
• Where two or more playes of the lithosphere meve tword one another and collide

RESULTING LANDFORM FROM OCEANIC VS CONTINENTAL

• Trench with volcanic arch

RESULTING LANDFORM FROM OCEANIC VS OCEANIC

• Trench with island arch or underwater arch

RESULTING LANDFORM FROM CONTINENT VS CONTINENT

• Mountin range
• Himalayas (mt everest)

SUBDUCTION ZONE

• A region of earths crust where tectonic plates meet

DEEP OCEAN TRENCH

• A long narrow steep sided depression in the earths oceanic crust, usually lying above a subduction zone

DEEP OCEAN TRENCH EXAMPLE

• Japanese archipelago

TRANSFORM PLATE BOUNDARY

• A fault

RESULTING EVENT FROM TRANSFORM PLATE BOUNDARY

• A fault
• Crust is niether created nor destroyed

EXAMPLE OF TRANSFORM PLATE BOUNDARY

• San Andreas fault