Geology Type Locality

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.

The concept is similar to type site in archaeology.

Rocks and minerals

• Aragonite: Molina de Aragón, Guadalajara, Spain
• Autunite: Autun, France
• Benmoreite: Ben More (Mull), Scotland
• Blairmorite: Blairmore, Alberta, Canada
• Boninite: Bonin Islands, Japan
• Comendite: Comende, San Pietro Island, Sardinia
• Cummingtonite: Cummington, Massachusetts
• Dunite: Dun Mountain, New Zealand
• Essexite: Essex County, Massachusetts, US
• Fayalite: Horta, Fayal Island, Azores, Portugal
• Harzburgite: Bad Harzburg, Germany
• Icelandite: Thingmuli (Þingmúli), Iceland
• Ijolite: Iivaara, Kuusamo, Finland
• Kimberlite: Kimberley, Northern Cape, South Africa
• Komatiite: Komati River, South Africa
• Labradorite: Paul's Island, Labrador, Canada
• Lherzolite: Étang de Lers, France (Old spelling was: Étang de Lherz.)
• Mimetite: Treue Freundschaft Mine, Johanngeorgenstadt, Germany
• Mugearite: Mugeary, Skye, Scotland
• Mullite: Isle of Mull, Scotland]
• Pantellerite: Pantelleria, off Sicily
• Portlandite: Scawt Hill, Ballygalley, Larne, County Antrim, Northern Ireland
• Rodingite: Roding River, New Zealand
• Sovite: Norsjø, Norway
• Strontianite: Strontian, Scotland (also the element strontium derived from the mineral)
• Temagamite: Copperfields Mine, Temagami, Ontario, Canada
• Tilleyite: Crestmore Quarry, Riverside County, California
• Tonalite: Tonale Pass
• Trondhjemite: Follstad, Støren, Norway
• Uraninite: Joachimsthal, Austria-Hungary (now Jáchymov, Czech Republic)
• Websterite: Webster in North Carolina.
• Widgiemoolthalite: Widgiemooltha, Western Australia, Australia
• Ytterbite (a.k.a. gadolinite): Ytterby, Sweden

Formations

• Bearpaw Formation: Bear Paw Mountains, Montana, US
• Burgess Shale: Burgess Pass on Mount Burgess, Alberta–British Columbia, Canada
• Calvert Formation: Calvert Cliffs State Park, Maryland, US
• Chapel Island Formation: Newfoundland, Canada
• Chattanooga Shale: Chattanooga, Tennessee, US
• Chazy Formation: Chazy, New York, US
• Fort Payne Formation: Fort Payne, Alabama, US
• Gault Formation: Copt Point, Folkestone, UK
• Holston Formation: Holston River, Tennessee, US
• Jacobsville Sandstone: Jacobsville, Michigan, US
• Ogallala Formation: High Plains, US
• St. Louis Limestone: St. Louis, Missouri, US
• Ste. Genevieve Limestone: Ste. Genevieve, Missouri, US
• Temple Butte Formation: Temple Butte, Grand Canyon, US
• Upper Greensand Formation: Weald, Sussex, Hampshire
• Waulsortian mudmound: Waulsort, Namur, Belgium

• Global Boundary Stratotype Section and Point
• Type specimen (biology)
• Type specimen (mineralogy)