<UNKNOWN>

The Plate Tectonics Theory put forth by geographers like Harry Hess explain the differential positions or shapes of continents.

Plate Tectonics Theory — Major Targets:

The granite is divided/fragmented into several plates.

ex: Nazca Coles, Pacific

These plates have movement driven by convective currents in the chamber

ex: [illegible] cells.

The relative movement of the plates ensure creation of landforms

ex: Ring of Fire

(ocean-continent convergence)

Theories of seafloor spreading with proof such as similar age of equidistant deposits is support Plate Tectonics.

Different types of Plate Boundaries:

Convergent Plate Boundary: Here two plates collide with each other with denser plates subducting under the lighter.

ex: Continent - Continent: Block/Fold Mountains

ocean - continent: Pacific Ring of Roe.

Divergent Plate Boundary: Here, two plates diverge away from each other due to diverging limbs of convective cells.

ex: Mid-Atlantic Ridge - chain of mountain arcs has formed due to divergent boundaries.

Transform Boundary: Here, while there is no subduction, there is release of tension between plates - sliding past each other.

ex: Gujarat Earthquake was due to a transform boundary.

Understanding of Plate Tectonics has led to:

Thus the development of the theory has imparted a scientific movement to the geological shift through Earth's history.