Type locality (geology)
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Type locality, also called type area, or type section, is the locality where a particular rock type, stratigraphic unit or mineral species is first identified.[1] If the stratigraphic unit in a locality is layered, it is called a stratotype, whereas the standard of reference for unlayered rocks is the type locality.[2]
The term is similar to the term type site in archaeology or the term type specimen in biology.
Contents
1 Examples of geological type localities
1.1 Rocks and minerals
1.2 Formations
2 See also
3 References
Examples of geological type localities
Rocks and minerals
Aragonite: Molina de Aragón, Guadalajara, Spain
Autunite: Autun, France
Benmoreite: Ben More (Mull), Scotland[3]
Blairmorite: Blairmore, Alberta, Canada
Boninite: Bonin Islands, Japan[4]
Comendite: Comende, San Pietro Island, Sardinia[5]
Coyoteite: Coyote Peak near Orick, California, USA
Cummingtonite: Cummington, Massachusetts
Dunite: Dun Mountain, New Zealand.[6]
Essexite: Essex County, Massachusetts, US[7]
Fayalite: Horta, Fayal Island, Azores, Portugal
Harzburgite: Bad Harzburg, Germany
Hilairite: Mont Saint-Hilaire, Quebec, Canada
Icelandite: Thingmuli (Þingmúli), Iceland[8]
Ijolite: Livaara, Kuusamo, Finland[9]
Kimberlite: Kimberley, Northern Cape, South Africa
Komatiite: Komati River, South Africa[10]
Labradorite: Paul's Island, Labrador, Canada
Lherzolite: Étang de Lers, France (Old spelling was: Étang de Lherz).[6]
Mimetite: Treue Freundschaft Mine, Johanngeorgenstadt, Germany
Mugearite: Mugeary, Skye, Scotland
Mullite: Isle of Mull, Scotland
Pantellerite: Pantelleria, off Sicily[11]
Portlandite: Scawt Hill, Ballygalley, Larne, County Antrim, Northern Ireland
Rodingite: Roding River, New Zealand.
Sabugalite: Sabugal, Guarda District, Portugal
Sovite: Norsjø, Norway[12]
Strontianite: Strontian, Scotland (also the element strontium derived from the mineral)
Temagamite: Copperfields Mine, Temagami, Ontario, Canada
Tonalite: Tonale Pass
Trondhjemite: Follstad, Støren, Norway[13]
Tyuyamunite: Tyuya-Muyun, Fergana Valley, Kyrgyzstan
Uraninite: Joachimsthal, Austria-Hungary (now Jáchymov, Czech Republic)
Websterite: Webster in North Carolina.[6]
Widgiemoolthalite: Widgiemooltha, Western Australia, Australia
Formations
Bearpaw Formation: Bear Paw Mountains, Montana, USA
Burgess Shale: Burgess Pass on Mount Burgess, Alberta-BC, Canada
Calvert Formation: Calvert Cliffs State Park, Maryland, USA
Chapel Island Formation: Chapel Island, Newfoundland, Canada
Chattanooga Shale: Chattanooga, Tennessee, USA
Chazy Formation: Chazy, New York, USA
Coon Creek Formation: Coon Creek, McNairy County, Tennessee, USA
Fort Payne Formation: Fort Payne, Alabama, USA
Gault Formation: Copt Point, Folkestone
Upper Greensand Formation: Weald, Sussex, Hampshire
Jacobsville Sandstone: Jacobsville, Michigan, USA
Holston Formation: Holston River, Tennessee, USA
St. Louis Limestone: St. Louis, Missouri, USA
Ste. Genevieve Limestone: Ste. Genevieve, Missouri, USA
Temple Butte Limestone: Temple Butte, Grand Canyon, USA[14]
See also
- Stratotype
- Global Boundary Stratotype Section and Point
References
^ "Scottish Geology, Glossary: Type locality/area". Hunterian Museum and Art Gallery of the University of Glasgow. Retrieved 2011-02-05..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
[permanent dead link]
^ "Stratotypes and Type Localities". International Commission on Stratigraphy. Retrieved 20 August 2017.
^ "Benmoreite". Oxford Index. Oxford University Press. Retrieved 14 June 2015.
^ Harms U., Koeberl C. & Zoback M.D. (2007). Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Springer Science & Business Media. p. 311. ISBN 9783540687788.
^ Robinson H.H. (1913). U.S. Geological Survey Professional Paper 76. U.S. Government Printing Office. p. 109.
^ abc Rogers, Nick; Stephen Blake; Kevin Burton; Mike Widdowson; Ian Parkinson; Nigel Harris (2008). An introduction to our dynamic planet (Co-published ed.). Cambridge: Cambridge Univ. Press. ISBN 978-0521494243.
^ State Geologist, Vermont (1918). Report of the State Geologist, Volume 11. p. 191.
^ Middlemost E.A.K. (1985). Magmas and magmatic rocks: an introduction to igneous petrology. Longman. p. 89. ISBN 9780582300804.
^ Maier W.D., Lahtinen R. & O'Brien H. (2015). Minerals Deposits of Finland. Elsevier. p. 302. ISBN 9780124104761.
^ Glikson A.Y. (2014). The Archaean: Geological and Geochemical Windows into the Early Earth. Springer. p. 75. ISBN 9783319079080.
^ Gill R. (2010). Igneous Rocks and Processes: A Practical Guide. John Wiley & Sons. p. 328. ISBN 9781444330656.
^ Oftedahl C. (1989). Sövite. Encyclopedia of Earth Science. pp. 544–545. doi:10.1007/0-387-30845-8_231. ISBN 978-0-442-20623-9.
^ Dunning G.R. & Grenne T. (2000). "U-Pb age dating and paleotectonic significance of trondhjemite from the type locality in the Central Norwegian Caledonides" (PDF). Norges Geologiske Undersøkelse Bulletin. 437: 57–65.
^ Temple Butte Limestone, USGS
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