Constructive and Conservative Plate Boundaries (OCR GCSE Geography B (Geography for Enquiring Minds)): Flashcards
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Plate boundaries
Plate boundaries
Where tectonic plates meet
Constructive boundary movement
Constructive boundary movement
Plates move apart
Why 'constructive'?
Why 'constructive'?
New crust created as magma rises & solidifies
Oceanic constructive boundary feature
Oceanic constructive boundary feature
Mid-ocean ridge
Continental constructive boundary feature
Continental constructive boundary feature
Rift valley
Conservative boundary movement
Conservative boundary movement
Plates slide past each other horizontally
Why 'conservative'?
Why 'conservative'?
No crust created or destroyed
Why earthquakes dangerous at conservative boundaries?
Why earthquakes dangerous at conservative boundaries?
Occur close to Earth's surface (shallow)
Volcanoes at conservative boundaries?
Volcanoes at conservative boundaries?
None - no gaps for magma to rise
Conservative boundary example
Conservative boundary example
San Andreas Fault, California