Plate Tectonics Flashcards
Convergent
Old crust is being destroyed
Can occur- ocean vs ocean
Continental vs continental
Ocean vs continental
Oceanic - continental convergent boundary
More dense Ocean crust Bends and slides beaneath the continental Crust at the subduction zone. This forms an oceanic trench
-A chain of volcanoes forms on the surface called a continental volcanic arc
Ocean vs ocean convergent
As the two plates collide an ocean trench and magma forms. Some of this magma rises to form volcanoes on the ocean floor.
What is an example of ocean-ocean convergence?
The islands of Japan and the Philippines
Example of oceanic vs continental volcanic arc?
Cascade mtn range
Continental vs continental convergent
Neither plate can slide Bonita each other because continental crust is light and cannot sync into the mantle. The plates form huge mountain ranges
Example of continental vs continental?
The alps, the years and the Himalayas
Transform fault
- plates sliding past each other
* new crust isn’t created nor destroyed
Example of the transform fault
San Andrés fault in California
What is ocean crust made of?
Basalt
What is continental crust made of?
Granite
On a map, what is the symbol for a transform plate boundary?
There is a line is the middle with two arrows on either side pointing the opposite ways
Divergent plate boundary symbol?
Little sections of thing that look like capital “i”s with arrows pointing away from each other
Convergent plate boundary symbol?
A line with little squares on the overriding plate with arrows on either side pointing torward each other
Where is most of the subduction occurring?
Around the pacific plate
