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Geologic Processes & Rock Classification
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What is the plate tectonics is the theory explaining what?
the movement of the plates and the processes that occur at their boundaries
What are tectonic plates?
huge rigid plates that are moved with convection cells or currents by floating on magma or molten rock
What is the importance of tectonic plates?
plate movement adds new land at boundaries, produces mountains, trenches, earthquakes, and volcanoes
Divergent
plates move apart in the opposite direction
Transform
plates slide next or past each other in opposite directions along a fracture
Core
innermost zone with solid inner core and molten outer core
Mantle
Solid rock with a rigid outer part (asthenosphere) that is melted pliable rock
Crust
Outermost zone which underlies the continents
Which two zones are made up of tectonic plates?
Crust and upper mantle
The Rock Cycle
the interaction of processes that change rocks from one type to another
Igneous (Intrusive and Extrusive) Rock
Intrusive: Formed from the solidification of magma below ground
Extrusive: Formed from the solidification of lava above ground
Sedimentary rock
formed from sediments. Most form when rocks are weathered and eroded into small pieces, transported, and deposited in a body of surface water
chemical precipitates
limestone precipitates out and oozes to the bottom of the ocean
Biochemical sediments
such as peat & coal
Metamorphic rock
when preexisting rock is subjected to high temperatures, high pressures, chemically active fluids, or a combination of these
Contact metamorphism
rock that is next to a body of magma
Regional metamorphism
during mountain building; great quantities of rock are subject to intense stresses and heat
Author
deadparrot69
ID
263041
Card Set
Geologic Processes & Rock Classification
Description
AP Environmental
Updated
2014-02-21T00:02:28Z
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