Chonolith

A chonolith is an igneous rock intrusion of irregular shape. A chonolith has a demonstrable base, which is absent in other types of irregularly shaped intrusions (batholiths, stocks and bosses).^[1]

Examples are:

the Spring Gulch chonolith composed of aplite, in Elko County in Nevada, USA.^[2]
the Nebo-Babel chonolith of gabbronorite in the West Musgrave area of Western Australia.^[3]
chonoliths in Norilsk, Russia.^[4]
a chonolith of dacite of Pleistocene age in Chinkuashih, Taiwan.^[5]
a chonolith of Cretaceous age in the Cortez Mountains, near Carlin in Nevada, USA.^[6]
a chonolith of andesite near Shavano in Colorado, USA.^[7]

References

^ Lahee, F. H. (1961) Field Geology, 6th edition, McGraw-Hill, page 143
^ Ketner, K. B. et al., (1998) An Outline of Tectonic, Igneous, and Metamorphic Events in the Goshute-Toano Range Between Silver Zone Pass and White Horse Pass, Elko County, Nevada: A History of Superposed Contractional and Extensional Deformation, U.S. Geological Survey Professional Paper 1593, page 10.
^ Seat, Z. et al. (2007) Architecture and emplacement of the Nebo–Babel gabbronorite-hosted magmatic Ni–Cu–PGE sulphide deposit, West Musgrave, Western Australia, Mineralium Deposita, volume 42 pages 551-581, DOI: 10.1007/s00126-007-0123-9
^ Yakubchuk, A. and Nikishin, A. M. (2004) Noril’sk–Talnakh Cu–Ni–PGE deposits: a revised tectonic model, Mineralium Deposita, volume 39, pages 125-142, DOI: 10.1007/s00126-003-0373-0
^ Folinsbee, R. E. et al. Chinkuashih - a Gold-Pyrite-Enargite-Barite Hydrothermal Deposit in Taiwan in Doe, B.R. and Kingsley Smith, D. (editors) (1972) Studies in Mineralogy and Precambrian Geology, Geological Society of America Memoir 135, page 333.
^ Muffler, L. J. P. (1962) Forcible Emplacement of Epizonal Plutons in the Cortez Mountains, North-Central Nevada in Abstracts for 1962, Geological Society of America Special Paper 73, page 208.
^ Dings, M. G. and Robinson, C. S. (1957) Geology and Ore Deposits of the Garfield Quadrangle, Colorado, U.S. Geological Survey Professional Paper 289, page 24.

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[1] Lahee, F. H. (1961) Field Geology, 6th edition, McGraw-Hill, page 143

[2] Ketner, K. B. et al., (1998) An Outline of Tectonic, Igneous, and Metamorphic Events in the Goshute-Toano Range Between Silver Zone Pass and White Horse Pass, Elko County, Nevada: A History of Superposed Contractional and Extensional Deformation, U.S. Geological Survey Professional Paper 1593, page 10.

[3] Seat, Z. et al. (2007) Architecture and emplacement of the Nebo–Babel gabbronorite-hosted magmatic Ni–Cu–PGE sulphide deposit, West Musgrave, Western Australia, Mineralium Deposita, volume 42 pages 551-581, DOI: 10.1007/s00126-007-0123-9

[4] Yakubchuk, A. and Nikishin, A. M. (2004) Noril’sk–Talnakh Cu–Ni–PGE deposits: a revised tectonic model, Mineralium Deposita, volume 39, pages 125-142, DOI: 10.1007/s00126-003-0373-0

[5] Folinsbee, R. E. et al. Chinkuashih - a Gold-Pyrite-Enargite-Barite Hydrothermal Deposit in Taiwan in Doe, B.R. and Kingsley Smith, D. (editors) (1972) Studies in Mineralogy and Precambrian Geology, Geological Society of America Memoir 135, page 333.

[6] Muffler, L. J. P. (1962) Forcible Emplacement of Epizonal Plutons in the Cortez Mountains, North-Central Nevada in Abstracts for 1962, Geological Society of America Special Paper 73, page 208.

[7] Dings, M. G. and Robinson, C. S. (1957) Geology and Ore Deposits of the Garfield Quadrangle, Colorado, U.S. Geological Survey Professional Paper 289, page 24.

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See also

References