PRESENTATION OUTLINE
ON LAND DIVERGENT BOUNDARIES FORM
IN THE OCEAN DIVERGENT BOUNDARIES FORM
- Underwater mountains/mid ocean ridge
- Underwater volcanoes
CONVERGENT PLATE BOUNDARY
WHEN OCEANIC AND CONTINENTAL CRUST CRASH THEY FORM
- Volcanic arch
- Examples:
- Mt. St. Helens
- Andes mountains
WHEN OCEAN AND OCEAN CRUST CONVERGE THEY FORM
- Island arches
- Examples:
- Islands of Japan
- Aleutian Island
WHEN CONTINENTAL CRUSTS CONVERGE THEY FORM
DEEP OCEAN TRENCH
- A DEEP VALLEY ALONG THE OCEAN FLOOR WHERE OCEANIC CRUST SINKS.
- An example is the Mariana Trench.
WHEN PLATES MOVE ALONG TRANSFORM BOUNDARIES IT CAUSES EARTHQUAKES.
AN EXAMPLE OF A TRANSFORM BOUNDARY IS
- San Andreas fault in California.