define nappe and sill
Answers
Answer:
ff
Step-by-step explanation:
zeeerxrcrxrxxrxrxrxrxrcr
Answer:
NAPPE
In geology, a nappe or thrust sheet is a large sheetlike body of rock that has been moved more than 2 km (1.2 mi) or 5 km (3.1 mi) 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 klippe.
Step-by-step explanation:
SILL
Sill, also called sheet, flat intrusion of igneous rock that forms between preexisting layers of rock. Sills occur in parallel to the bedding of the other rocks that enclose them, and, though they may have vertical to horizontal orientations, nearly horizontal sills are the most common. Sills may measure a fraction of an inch to hundreds of feet thick and up to hundreds of miles long. Rock compositions of all types are found in sills. The famous basic sills have received much attention because of the knowledge they provide concerning the crystallization behaviour of basic magmas.