nappe

2 ENTRIES FOUND:

nappe

noun \ˈnap\

Definition of NAPPE

1
:  sheet 6
2
:  a large mass of rock thrust over other rocks
3
:  one of the two sheets that lie on opposite sides of the vertex and together make up a cone

Origin of NAPPE

French, tablecloth, sheet, nappe, from Old French nape — more at napkin
First Known Use: 1904

Rhymes with NAPPE

nappe

noun    (Concise Encyclopedia)

In geology, a large body or sheet of rock that has been moved by faulting or folding a distance of about 1 mi (1.5 km) or more from its original position. A nappe may be the hanging wall of a low-angle thrust fault (a fracture in the rocks of the Earth's crust caused by contraction), or it may be a large recumbent fold (i.e., an undulation in the stratified rocks that have an essentially horizontal axial plane); both processes position older rocks over younger rocks.

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