GEO Lab 07
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study of landforms, their classification, origin, development, and history
Plate tectonic theory forced geologists to reevaluate mountain building and look at it in a new light
The process by which magma and associated gases rise to the Earth's crust and are extruded or expelled onto the surface and into the atmosphere
- composed of low density sialic rocks
- part of Crust
- made up of denser simatic rocks
- form the floor of the deep ocean
part of crust and mantle 40 to 95 km
below the lithosphere in upper mantle
the surface of separation of layer between the denser rocks in the mantle and the less dense materials that form the crust
one land mass part of plate tectonics theory
Earth is divided into 15 lithospheric plates that are driven by convection currents.
- rift valleys
- these are marked by earthquakes and volcanoes.
formed himalayas and Andes
- This is where boundaries are sliding past each other
- Earth quakes and deformation mark these zones of lateral movement.
Hot spot Volcanoes
these are the product of an isolated locus of high temperature deep in the mantle
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