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A normally dry stream bed that ocassionally fills with water.
Weathering includes two surface
or near-surface processes that work in concert to decompose rocks. Both
processes occur in place. No movement is involved in weathering. Chemical
weathering involves a chemical change in at least some of the minerals
within a rock. Mechanical weathering involves physically breaking rocks
into fragments without changing the chemical make-up of the minerals
within it. Mechanical weathering includes processes such as water in
cracks freezing and expanding, or changes in temperature that expand
and shrink individual minerals enough to break them apart. well-sorted Refers to a sedimentary deposit or rock with grains of the same approximate size. arrow and text --------------------------------------------------------------------------------
A piece of foriegn rock enclosed within an igneous rock. The foriegn rock is usually picked up from the walls surrounding the igneous rock and is frozen in place before it has a chance to melt. (=inclusion) |
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