nappe
Sign in to savethumb|right|350px|Schematic overview of an eroded thrust system. The shaded material is the nappe. The erosional hole is called a window (geology)|window or fenster. The [[klippe is the isolated block of the nappe overlying autochthonous material.]] In geology, a nappe or thrust sheet is a large sheetlike body of rock that has been moved more than or above a thrust fault from its original position. Nappes form in compressional tectonic settings like continental collision zones or on the overriding plate in active subduction zones. Nappes form when a mass of rock is forced (or "thrust") over an
Article
5 sectionsContents
- History
- Structure
- Classification
- Mechanisms of emplacement
- References
thumb|right|350px|Schematic overview of an eroded thrust system. The shaded material is the nappe. The erosional hole is called a window (geology)|window or fenster. The [[klippe is the isolated block of the nappe overlying autochthonous material.]] In geology, a nappe or thrust sheet is a large sheetlike body of rock that has been moved more than or above a thrust fault from its original position. Nappes form in compressional tectonic settings like continental collision zones or on the overriding plate in active subduction zones. Nappes form when a mass of rock is forced (or "thrust") over another rock mass, typically on a low angle fault plane. The resulting structure may include large-scale recumbent folds, shearing along the fault plane, imbricate thrust stacks, fensters and klippes.
The term stems from the French word for tablecloth in allusion to a rumpled tablecloth being pushed across a table.