If all of the olivine crystallized in a typical magma and then settled to the floor of the magma chamber, would there still be enough elements present in the magma to form quartz?
What will be an ideal response?
Yes, there is much more silicon and oxygen present in a typical magma than iron and magnesium.
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The dominant control in global sea surface temperature is
A) upwelling and thermocline zones. B) rising air along the equator. C) descending air in the subtropics. D) the supply of solar insolation.
Slumps are characterized as
A) free falling through the air. B) material moving as a coherent block along a planar surface. C) rotational slides on curved surfaces. D) flowing as a high-viscosity liquid.
In general, what type of climate accelerates soil forming processes?
a. Cold and dry. b. Warm and wet. c. Warm and dry. d. Cold and wet.
At mid-ocean ridges, as two plates diverge,
A. solid mantle in the asthenosphere rises toward the surface and begins to melt due to the addition of heat. B. solid mantle in the asthenosphere rises toward the surface and begins to melt due to decompression. C. liquid mantle in the asthenosphere rises toward the surface.