Term
1-3 Match the magma type with the appropriate tectonic setting where it likely forms.
1.Iceland
2.Sierra Nevada batholith
3.Phillipine Islands
a. basalt
b. granite
c. andesite
d. peridotite
e. andalucite |
|
Definition
Iceland = basalt
Sierra Nevada batholith = granite
Phillipine Islands = andesite |
|
|
Term
| The Columbia Plateau is composed of rock rich in: |
|
Definition
|
|
Term
| The melting temperature of granitic magma (wet melt) ______________: |
|
Definition
| increases as pressure is reduced (as it rises). |
|
|
Term
| A partial melt of the asthenosphere will not rise toward the surface because _____________. |
|
Definition
| the above question is incorrect because an asthenospheric melt will rise towards the surface |
|
|
Term
| When two ocean plates converge ___________. |
|
Definition
| the older plate will be subducted |
|
|
Term
| The most widely accepted explanation for the earth's magnetic field is _______________. |
|
Definition
| movement of electrons in the molten iron of its outer core |
|
|
Term
| What kind of plate margin exists today in East Africa? |
|
Definition
|
|
Term
| What type of volcanic rock would incorporate lithic fragments during the eruption. |
|
Definition
|
|
Term
| Why does potassium feldpar develop cleavage planes yet it is a framework silicate mineral with all its oxygen atoms shared between tetrahedra? |
|
Definition
this mineral has an aluminum atom in some of its tetrahedra which requires additional ionic bonds with
potassium atoms |
|
|
Term
| ______________ flows from Mount Vesuvius obliterated the Roman city of Pompeii in 79AD. |
|
Definition
|
|
Term
| Magnetic minerals that crystallize in a lava flow erupted near the North Pole today will ________. |
|
Definition
| be oriented perpendicular to the surface of the lava flow |
|
|
Term
|
Definition
| are blocky textured flows that form as the viscosity increases during degassing |
|
|
Term
| Rank the chemical bonds forming minerals from weakest to strongest |
|
Definition
| Vanderwahl, ionic, covalent |
|
|
Term
| What are the two most common elements comprising rocks of the crust and mantle. |
|
Definition
| Silicon (Si) and Oxygen (O) |
|
|
