A klippe (German language for cliff or crag; plural klippen or klippes) is a geological feature of thrust fault terrains. The klippe is the remnant portion of a nappe after erosion has removed connecting portions of the nappe. This process results in an outlier of exotic, often nearly horizontally translated strata overlying strata.
Examples
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Chief Mountain, Montana
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Mount Yamnuska, Alberta
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The Rock of Gibraltar
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Acropolis of Athens, Greece
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Bac Grillera, Catalonia, Spain. The nappe of which this klippe once formed part had its root in the northern part of the Pyrenees mountain range.
[Marc Calvet, Yanni Gunnell, Bernard Laumonier. Denudation history and palaeogeography of the Pyrenees and their peripheral basins: an 84-million-year geomorphological perspective. Earth Science Reviews, 2021. See map, page 195. Online at insu.hal.science.][Estevez, A. (1968). Tectónica de las unidades alóctonas del Castell de Bac Grillera (Pirineo oriental, España). Acta Geológica Hispànica, t. III, núm. 5, p. 138-141. Online at revistes.ub.edu.]
Klippes may also be found in the Pre-Alps of Switzerland and some of the isolated mountains in Assynt, Sutherland, in NW Scotland.[Whittow, John (1984). Dictionary of Physical Geography. London: Penguin, 1984, p. 294. .
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Beckov Castle, Slovakia, from below.jpg|Beckov Castle, Slovakia, perched on a limestone klippe
Serra Bac de Grillera.jpg|Serra de Bac Grillera, Catalonia, Spain (Lower Jurassic limestone resting on younger autochthonous Tertiary period formations)