scopulus

A lobate or irregular scarp.
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Scopulus

In planetary geology, scopulus (pl. scopuli) is the term used to describe a lobate or irregular escarpment. The word is from the Latin meaning a crag, cliff, or a rock at sea. The word is derived from the Greek σκόπελος, which means prominatory, peak, or headland. The word can also mean a look-out place as indicated by its root σκόπε-
Found on http://en.wikipedia.org/wiki/Scopulus
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