Horst and graben
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In geology, horst and graben refer to regions that lie between normal faults and are either higher or lower than the area beyond the faults. A horst represents a block pushed upward relative to the blocks on either side by the faulting, and a graben is a block generally long compared to its width that has been lowered relative to the blocks on either side due to the faulting. Horst and graben are formed when normal faults of opposite dip occur in pair with parallel strike lines. Horst and graben are always formed together. Graben are usually represented by low-lying areas such as rifts and river valleys whereas horsts represent the ridges between or on either side of these valleys.
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- Valdiya, K.S.; Sanwal, Jaishri (2017-01-01). "Satpura Horst and Narmada–Tapi Grabens". Neotectonism in the Indian Subcontinent - Landscape Evolution. Developments in Earth Surface Processes. 22. pp. 237–247. doi:10.1016/B978-0-444-63971-4.00010-4. ISBN 9780444639714. ISSN 0928-2025.