Up a down and vertical crust are description of
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Answer:
Faults can be VERTICAL faults where the blocks of the crust move up or down, HORIZONTAL faults when the blocks move sideways to each other, and COMPOUND faults where the movement is a combination of upward or downward and sideways. Two types of vertical faults are recognized.
vertical faults
The FOOT WALL BLOCK is the block which would be under the feet of a person standing in a tunnel on the fault plane. The HANGING WALL BLOCK would then be hanging overhead.
footwall and hanging wall blocks
The UPTHROWN SIDE of the fault is the side on which the movement has been up relative to the other side. It is represented by an arrow pointing up on a geologic section or block diagram or by a U on a map. The DOWNTHROWN SIDE is the side which went relatively down and is represented by such an arrow or the letter D.
Explanation:
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