At a fault block, one portion of the block moves upward while the adjacent portion moves downward. What is the upper portion called?
A. The plateau
B. The graben
C. The horst
D. The rift
Answer (2)
In a fault block where one portion moves upward and an adjacent one moves downward, the upper portion is called a horst. Thus, the correct option is C: The horst.
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In a fault block where one portion moves upward and the adjacent portion moves downward, the upper portion is called a 'horst.' The terms 'graben,' 'plateau,' and 'rift' have different geological meanings and do not correctly describe the upward block. Therefore, the best answer is C: The horst. ;
