What are pegmatites, and how do they form? What will be an ideal response?
Pegmatites are composed of mostly felsic minerals, close in composition to granite. The minerals in
pegmatites are enormous, at least 1 cm across and up to many centimeters or even meters. Pegmatites
are found near large granite plutons and form from the water-rich magma that remains after most of
the granite crystallized. The water-rich magma travels through cracks and has time to cool slowly,
creating enormous minerals.
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A linear ridge of sediment attached to land at one end might be called a ________.
A) bay barrier B) tombolo C) barrier island D) bay-mouth bar
How does isostasy relate erosion and deformation to changes in surface elevation?
What will be an ideal response?
All of the following factors would contribute to water to sinking at the poles EXCEPT
A. absence of clouds. B. melting ice. C. formation of brine. D. lack of atmospheric water vapor.
What are the principles involved in removing biological nutrients from waste, and what is accomplished by doing so? Where do nitrogen and phosphate go in the process?
What will be an ideal response?