Clean Your Plate! Magnetism ResourcesRandoms! Picture This
The study of the large-scale processes that collectively deforms the plates that make up Earth’s crust.
What is Tectonics?
The theory which proposes that Earth’s outer shell consists of individual plates that interact in various ways.
What is Plate Tectonics?
Numerous rigid sections of the lithosphere that move as a unit over the material of the asthenosphere.
What are Plates?
A concentration of heat in the mantle, capable of producing magma, that in turn extrudes onto Earth’s surface. This ‘spot’ can create intraplate volcanism.
What is a hotspot ?
A mass of hotter-than-normal magma that ascends toward Earth’s surface, where it may lead to igneous activity on a plate.
What is a Mantle Plume ?
The process in which the natural remnant magnetism in rock bodies can help determine the location of the magnetic poles.
What is Paleomagnetism?
The idea that the magnetic poles have ‘wandered’ through time.
What is Polar Wandering?
The type of magnetism in which rocks exhibit the same magnetism as the present magnetic field.
What is Normal Polarity?
The type of magnetism in which rocks exhibit the opposite magnetism to the present magnetic field.
What is Reverse Polarity?
The theory which states that Earth’s North and South poles switch direction periodically.
What is Magnetic Reversals?
The endowment of materials held in reserve that are useful to humans and are ultimately available commercially.
What are Resources?
A resource that is virtually inexhaustible or that can be replenished over a relatively short time span.
What is a Renewable Resources?
A resource that forms or accumulates over such a long time span that it must be considered as fixed in total quantity.
What is a Non-renewable Resource?
A mineral resource that is not a fuel and is not processed for the metals it contains. In fact these minerals are non-metallic.
What are Non-metallic mineral resources?
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That’s OK because igneous is bliss!
Mountains that are formed, in part, by igneous activity associated with the subduction of oceanic lithosphere beneath a continent.
What are Continental Volcanic Arcs?
A mechanism that contributes to plate motion in which cool, dense oceanic crust sinks into the mantle and « pulls » the trailing lithosphere along.
What is Slab-pull?
A mechanism that may contribute to plate motion. It involves the oceanic lithosphere sliding down the oceanic ridge under the pull of gravity.
What is Ridge-push?
This is a proposed driving mechanism for plate movement, caused by unequal heating in Earth’s mantle.
What is Mantle Convection?
Watson: Holmes! What kind of rock is this!
Holmes: Sedimentary, my dear Watson.
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What is Lithosphere?
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What is the Asthenosphere?
Which transform fault is this?
What is the San Andreas Fault?
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What is Gondwanaland?
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What is Laurasia?