Stock (geology)

A stock of nordmarkite (quartz-alkali syenite) of Triassic age, in the Gevanim Valley, Makhtesh Ramon, southern Israel.

In geology, a stock is an igneous intrusion that has a surface exposure of less than 100 square kilometres (40 sq mi),[1][2] differing from batholiths only in being smaller. A stock has a discordant relationship with the rocks that it intrudes. Many stocks are cupolas of hidden batholiths.[3][2] Some circular or elliptical stocks may be volcanic plugs, which fill the vents of now extinct volcanoes.[4][5] A boss is a small stock.[6]

  1. ^ Gabler, R.E. et al. (2009) Physical Geography (9th edition), Cengage Learning Inc., page 390.
  2. ^ a b Whittow, John (1984). Dictionary of Physical Geography. London: Penguin, 1984, p. 513. ISBN 0-14-051094-X.
  3. ^ Albert, Fay H. (1947). A Glossary of the Mining and Mineral Industry. Washington, D.C.: Government Printing Office. p. 200.
  4. ^ Kikauka, Andris (1996). Geological, Geochemical, and Diamond Drilling Report on the Salal 1-6 Claims, Pemberton, B.C. (Report). Sooke, British Columbia: Geo-Facts. p. 7.
  5. ^ Gillen, C. (2003). Geology and Landscapes of Scotland (2nd edition). Dunedin. ISBN 978-1780460093.
  6. ^ Coash, John R. (1967). "Geology of the Mount Velma Quadrangle, Elko County, Nevada". Nevada Bureau of Mines Bulletin. 68: 16.