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13 Cards in this Set
- Front
- Back
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What are the agents of metamorphism? |
Heat, pressure, chemically active fluids. |
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What is Pangaea? |
Earth's continents as a whole. |
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What is a divergent boundary? |
Two tectonic plates moving away from each other. |
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What is a convergent boundary? |
When two tectonic plates move towards eachother. |
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Where is new ocean crust formed? |
Mid ocean ridges. |
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What is the athenosphere? |
Upper mantle of the Earth, below lithosphere. |
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What are geomagnetic reversals? |
A change in plants magnetic field. Such that the positions of magnetic North and magnetic South are interchanged. |
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What is a mid ocean ridge? |
A seismically active submarine ridge system marking the site of the upwelling of magma. |
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What are deep ocean trenches associated with? |
Island arcs, mountain ranges, sunduction zones. |
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What is sillicate? |
Fluorescent salt (ZrSiO4) that occurs as Zircon and can be obtained by mixing solutions. |
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What is the most abundant element in the Earth's crust? |
Oxygen (46.6%). |
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What is luster? |
Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral. |
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What properties of minerals is the most unreliable diagnostic tool? |
Color. |
