Blomidon Formation
{{Infobox rockunit
| name = Blomidon Formation
| image = Minor normal faults.JPG
| caption = Faulted continental redbeds of the Blomidon Formation, Minas Basin North Shore, Nova Scotia
| type = Geological formation
| period = Rhaetian
| prilithology = Sandstone
| otherlithology = Mudstone
| namedfor = Cape Blomidon
| namedby = Klein, 1962
| region = Nova Scotia, New Brunswick
| country = Canada
| coordinates = {{coord|45|17|43|N|64|19|55|W|display=inline,title}}
| unitof = Newark Supergroup
| subunits =
| underlies = North Mountain Basalt
| overlies = Wolfville Formation
| thickness = {{convert|365|-|2500|m|ft|abbr=on}}
| extent =
| area =
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The Blomidon Formation is a unit of Upper Triassic (Norian–Rhaetian) sedimentary rocks, which outcrops in Nova Scotia. At outcrop they reach a maximum thickness of {{convert|365|m|ft}}, but up to {{convert|1168|m|ft}} has been proven from well data and a thickness of up to {{convert|2500|m|ft}} has been inferred from seismic reflection data. It overlies the mainly Carnian Wolfville Formation and underlies the North Mountain Basalt.{{cite journal|last=Tanner|first=L.H.|year=1996|title=Formal definition of the Lower Jurassic McCoy Brook Formation, Fundy Rift Basin, eastern Canada|journal=Atlantic Geology|volume=32|pages=127–135|url=http://journals.hil.unb.ca/index.php/ag/article/viewFile/2083/2447|accessdate=15 December 2012}} The type section is exposed between Cape Blomidon ({{coord|45|17|43|N|64|19|55|W|display=inline}}) and Paddy Island ({{Coord|45.197372|N|64.359411|W|display=inline}}).{{cite book|last=Luttrell|first=Gwendolyn|title=Geological Survey Bulletin: 1572|year=c. 1989|publisher=U.S. Department of the Interior, Geological Survey|authorlink=Stratigraphic Nomenclature of the Newark Supergroup of Eastern North America}}