Plate Boundaries Morgan Kramer

Tectonic plates of the Earth.

There are many Plate Boundaries all across the world that move in all sorts of different ways, and create many different landforms and landmarks we visit today. These are some of the numerous examples of what these plates create, and how.

Convergent Boundary

Subduction.

A convergent boundary occurs when two tectonic plates move against each other and create compression. When this happens, subduction occurs. Subduction forms oceanic trenches and volcanic arcs.

Himalayan Mountains

The Himalayas are an example of what a convergent boundary can create. The Himalayas are a mountain range in Asia that separate the plains of the Indian subcontinent from the Tibetan Plateau. The Himalayas have the Earth's highest peaks, including the tallest, Mount Everest. These mountains began to form 50 million years ago and continue to grow today.

Divergent Boundary

Mid-ocean Ridge / Subduction process

A divergent boundary is when two plates move away from each other and separate. This creates tension between them and forms a mid-ocean ridge with spewing magma beneath the oceanic crust. The magma makes its way through the convection process continuously.

East African Rift

The East African Rift (EAR) is an active continental rift zone in East Africa. The EAR is slowly being pulled apart into 2 plates about 6-7 mm annually. The rift began developing around 22–25 million years ago, and continues to grow to this day.

Transorm Boundary

Fault line / Transforming plates

A transform boundary is when two plates move and slide against each other in opposite directions (North/South or East/West), forming a fault line between. This creates shear stress and when released, creates earthquakes.

San Andreas Fault

The San Andreas Fault is evidently the most famous example of a transform boundary. The Fault is roughly 800 miles (1,300 km) long and extends throughout California. It is also a strike-slip fault, which means it moves in a horizontal direction, parallel to the line of the fault.

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Credits:

Created with images by Darren Foreman - "Cradle Mountain" • jay galvin - "Hubbard Glacier" • hwat - "A snowy gorge" • RonPorter - "valley of desolation dolerite stacks south africa" • Hitchster - "Fault scarp"

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