Types of Plate Boundaries Camryn Tomlinson

Convergent Plate Boundary (Ocean-to-Continent).

Two tectonic plates (Oceanic and Continental) collide from compression stress and form a convergent plate boundary. The denser plate will subduct and an ocean trench is formed and also, a volcanic mountain will form near the edge of the continent.

Mount Rainier in the Cascade Mountains. (Volcanic Mountain along the edge of the continent.)

Earthquake beneath Mount St. Helens on November 21, 2016

Washington-Oregon Coastline (Oceanic Plate subducting under Continental Plate)

Underwater Volcano Axial Seamount Erupts.

Andes Mountain Range (Oceanic plate moving towards Continental plate)

Andean Volcano eruption in 1993 and was still active in 2012

Convergent Plate Boundary (Continent to Continent)

Himalayas (Collision between two continental plates)

Himalayas are rising 1cm per year causing shallow earthquakes throughout the year

Appalachian Mountain Range (Two continental plates colliding and rising up)

Magnitude of 2.4 earthquake hit the mountains in August 2014

Transform Plate Boundary

San Andreas Fault (Two plates sliding past each other)

Fort Tejon Earthquake in southern California on January 9, 1857 at an estimated 7.9 magnitude.

Alpine Fault (Pacific and Australian plates sliding past each other)

The fault has ruptured 4 times in the past 900 years producing earthquakes of about magnitude 8, the approximate rupture dates are 1717 AD, 1620 AD, 1450 AD, and 1100 AD.

Rift Valley

Divergent Plate Boundary

Two plates spreading and creating new crust

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