Science / Geology / Horst: An elongated block of high topographic relief that is bounded on two sides by steep normal faults. Produced in an area of crustal extension.
Science / Geology / Graben: A downthrown block between two normal faults of parallel strike but converging dips: hence a tensional feature. See also horst. MORE
Science / Geology / Fault-Block Mountain: A mountain or range formed as a horst when it was elevated between parallel normal faults. MORE