Massif

This article is about a geological formation. For other uses, see Massif (disambiguation).
Not to be confused with Mountain or Mountain range.
Not to be confused with Mastiff.
A massif in Ukraine

A massif (/mæˈsiːf, ˈmæsɪf/) is a principal mountain mass,[1] such as a compact portion of a mountain range, containing one or more summits (e.g. France's Massif Central). In mountaineering literature, a massif is frequently used to denote the main mass of an individual mountain.

As a purely scientific term in geology, however, a "massif" is separately and more specifically defined as a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. A massif is a smaller structural unit than a tectonic plate and is considered the fourth-largest driving force in geomorphology.[2]

The word "massif" originates from French (in which the word also means "massive"), where it is used to refer to a large mountain mass or compact group of connected mountains forming an independent portion of a range. The Face on Mars is an example of an extraterrestrial massif.[3] Massifs may also form underwater, as with the Atlantis Massif.[4]

  1. ^ "massif". Merriam-Webster.com Dictionary. Merriam-Webster. Retrieved 2023-06-21.
  2. ^ Allen, P. A. 2008, Time scales of tectonic landscapes and their sediment routing systems, Geol. Soc. Lon. Sp. Pub., v. 296, p. 7–28.
  3. ^ Britt, Robert Roy (2006-09-21). "Mars Face Makeover: Controversial Formation Observed from New Angles". Space.com. Retrieved 2009-05-04.
  4. ^ Blackman, Donna (2002). "Geology of the Atlantis Massif (Mid-Atlantic Ridge, 30°N): Implications for the evolution of an ultramafic oceanic core complex". Marine Geophysical Researches. 23 (5): 443–469. Bibcode:2002MarGR..23..443B. doi:10.1023/b:mari.0000018232.14085.75. S2CID 96459991.