rotational slide

geology

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July 16, 2026

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A rotational slide, also known as a slump, is a geological phenomenon where a mass of rock or debris moves downward intermittently along a curved shear plane. This movement is typically triggered by the removal of supporting material at the base of a slope, causing the overlying unconsolidated material to break and slide. The top of the slumped mass often tilts backward as it moves. This process can result in an irregular, hummocky deposit.12

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landslide
Types of landslides
…slide), or it can be rotational along a concave-upward set of shear surfaces (a slump). A translational slide typically takes place along structural features, such as a bedding plane or the interface between resistant bedrock and weaker overlying material. If the overlying material moves as a single, little-deformed mass, it…
Read More
…slide), or it can be rotational along a concave-upward set of shear surfaces (a slump). A translational slide typically takes place along structural features, such as a bedding plane or the interface between resistant bedrock and weaker overlying material. If the overlying material moves as a single, little-deformed mass, it…
Read More