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Transcript of Plate tectonics
A hypothetical super continent that included all current land masses, believed to have been in existence before the continents broke apart during the Triassic and Jurassic Periods.
A slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior of the Earth to the surface.
Mantle convection is the slow creeping motion of Earth's rocky mantle caused by convection currents carrying heat from the interior of the Earth to the surface. Deep within the earth there is a large amount of heat coming from two sources: the magma and radiation from radioactive elements. This heat must flow to a cooler place, and subsequently rises to the surface of the Earth
Convergent Boundary= Is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide.
Divergent Boundary= Is a linear feature that exists between two tectonic plates that are moving away from each other.
Transform= Is a type of fault whose relative motion is predominantly horizontal, in either a sinistral or dextral direction.
Theory of Plate Tectonics
Theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's surface relative to each other, like slabs of ice on a lake.
A continental drift is a series of continents movements through a series of time.
In 1915, the German geologist and meteorologist Alfred Wegener first proposed the theory of continental drift, which states that parts of the Earth's crust slowly drift atop a liquid core. The fossil record supports and gives credence to the theories of continental drift and plate tectonics.
Magalis Castellon Cruz, 2nd Period
Plate Boundary Ex:
Convergent: Washington Oregan
Divergent: Mid-Atlantic Ridge
Transform: San Andrea's
Evidence of existence:
Earths continents seem to fit together like a puzzle in many areas around the globe
Fossils; In terms of fossil distribution, archaeologists have found matching fossil remains if ancient species in continents are separated by thousands of miles of ocean today.
Patterns in rock strata, and coal
formed because of the collision between Indian Plate and Eurasion Plate
Began 50 million yrs. ago and is still continuing
Himalaya Mountain Rising: