Fold mountains - wikipedia Fold mountains Zagros Mountains, seen from space. Fold mountains are mountains that form mainly by the effects of folding on layers within the upper part of the Earth 's crust. Before either plate tectonic theory developed, or the internal architecture of thrust belts became well understood, the term was used for most mountain belts, such as the Himalayas. The term is still fairly common in physical geography literature but has otherwise generally fallen out of use except as described below. The forces responsible for formation of fold mountains are called orogenic movements. The term orogenic has derived from a Greek word meaning mountain building. These forces act at tangent to the surface of the earth and are primarily a result of plate tectonics. Contents 1 Formation 2 Examples 3 See also 4 References Formation Fold mountains form when two tectonic plates move towards each other at a convergent plate boundary. Fold mountains form from sedimentary rocks that accumulate along the margins of continents. When plates and the continents riding on them collide, the accumulated layers of rock may crumple and fold like a tablecloth that is pushed across a table, particularly if there is a mechanically weak layer such as salt. Examples The Jura mountains - A series of sub-parallel mountainous ridges that formed by folding over a Triassic evaporite decollement due to thrust movements in the foreland of the Alps The ' Simply Folded Belt ' of the Zagros Mountains - A series of elongated anticlinal domes, mostly formed as detachment folds over underlying thrusts in the foreland of the Zagros collisional belt, generally above a basal decollement that formed in the late Neoproterozoic to Early Cambrian Hormuz evaporite The Akwapim - Togo ranges in Ghana The Ridge - and - Valley Appalachians in the eastern part of United States. See also Fault - block mountain Mountain building Aravalli References ^ Jump up to : Ulmer, S. ( 11 August 2011 ). `` Fold mountains slip on soft areas ''. ETH Life. ETH Zürich. Retrieved 21 February 2012. GND : 4153639 - 3 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Fold_mountains&oldid=821879728 '' Categories : Mountain geomorphology Structural geology Orogeny Hidden categories : Wikipedia articles with GND identifiers Talk Contents About Wikipedia বাংলা Dansk Deutsch Eesti Esperanto 한국어 हिन्दी Kiswahili Magyar Polski Русский Simple English Српски / srpski Українська Edit links This page was last edited on 23 January 2018, at 04 : 10. About Wikipedia

Question: what tectonic setting is responsible for the folded mountains of pennsylvania and the high himalaya
Answer: a convergent plate boundary