https://en.bharatpedia.org/w/index.php?action=history&feed=atom&title=StratotypeStratotype - Revision history2026-10-21T17:26:17ZRevision history for this page on the wikiMediaWiki 1.43.6https://en.bharatpedia.org/w/index.php?title=Stratotype&diff=423283&oldid=prevAjay Kumar: Created a new article2023-08-30T19:43:29Z<p>Created a new article</p>
<p><b>New page</b></p><div>A '''stratotype''' or '''type section''' in [[geology]] is the [[Location (geography)|physical location]] or [[outcrop]] of a particular reference exposure of a [[Stratigraphy|stratigraphic sequence]] or stratigraphic boundary. If the stratigraphic unit is layered, it is called a stratotype, whereas the standard of reference for unlayered rocks is the [[Type locality (geology)|type locality]].<ref>{{cite web |url=http://stratigraphy.org/upload/bak/strats.htm |title=Stratotypes and Type Localities |publisher=International Commission on Stratigraphy |access-date=20 August 2017}}</ref> <br />
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Also it can be defined as "The particular sequence of strata chosen as standard of reference of a layered stratigraphic unit."{{Quote without source|date=September 2022}} <br />
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When a stratigraphic unit is nowhere fully exposed, the original type section may be supplemented with '''reference sections''' covering the full thickness of the unit. A reference section may also be defined when the original type section is poorly exposed, or for historical units which were designated without specifying a type section according to more modern standards.<ref>{{cite journal |author=North American Commission on Stratigraphic Nomenclature |title=North American Stratigraphic Code |journal=AAPG Bulletin |date=November 2005 |volume=89 |issue=11 |doi=10.1306/07050504129 |url=https://ngmdb.usgs.gov/Geolex/resources/docs/AAPG_Bull-89_NACSN-Code.pdf |access-date=8 August 2020 |page=1563|bibcode=2005BAAPG..89.1547. }}</ref><br />
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== See also ==<br />
* [[Global Boundary Stratotype Section and Point]]<br />
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== References ==<br />
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{{Chronology}}<br />
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{{DEFAULTSORT:Stratotype}}<br />
[[Category:Geochronologically significant locations]]<br />
[[Category:Paleogeography]]<br />
[[Category:Stratigraphy]]<br />
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{{Stratigraphy-stub}}</div>Ajay Kumar