nappe
/nap
/noun Geology
A sheet of rock that has moved sideways over neighbouring strata as a result of an overthrust or folding.On its south side the Oytag arc is thrust over Carboniferous sandstones and limestones that are folded into spectacular nappes....
- Another important difference is that the basement of one of the Menderes nappes (dine nappe, see below) is of Neoproterozoic to Cambrian age.
- Stratigraphic relationships show that the Mata nappe follows a recumbent fold structure characterized by a normal and an inverted fold limb.
Origin
Late 19th century: from French nappe 'tablecloth'.