Crown Hill Formation
{{Infobox rockunit
| image =
| caption =
| type = Formation
| age = {{Geological range|550}}
| period = Ediacaran
| prilithology = Volcanic non-marine
| otherlithology =
| namedfor =
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| region = Newfoundland
| country = Canada
| coordinates =
| unitof = Musgravetown Group{{Cite web | url=https://geoatlas.gov.nl.ca/Default.htm | title=Newfoundland and Labrador Geoscience Atlas | website=geoatlas.gov.nl.ca}}
| subunits =
| underlies = * Random Formation (conformably, in Random Island area)
- Others (elsewhere)
| overlies = Rocky Harbour Formation{{cite journal |last1=Liu |first1=Alexander G. |last2=Tindal |first2=Benjamin H. |title=Ediacaran macrofossils prior to the ~580 Ma Gaskiers glaciation in Newfoundland, Canada |journal=Lethaia |date=April 2021 |volume=54 |issue=2 |pages=260–270 |doi=10.1111/let.12401}}
| thickness =
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| map = Crown Hill Formation map.svg
| map_caption = Occurrence in southeast Newfoundland
}}
Crown Hill Formation is a late Ediacaran volcanic non-marine sedimentary formation in Newfoundland.{{Cite web | url=http://gis.gov.nl.ca/minesen/geofiles/display.asp?lit_type_txt=all%20Document%20Types&pageCt=1&lit_type=0&local_file=002C/0058 | title=Mines and Energy - GeoFiles Search Results}} It's topped off with a bright red conglomerate, with silt and arkose sands of similar hue too.{{cite web|url=http://www.nr.gov.nl.ca/nr/mines/geoscience/publications/report06_02.pdf|author1=Fletcher, T. P.|year= 2006 |title=Bedrock geology of the Cape St. Mary's Peninsula, southwest Avalon Peninsula, Newfoundland. | pages =117}}
It's subdivided into nine facies, including (on Random Island) Brook Point, Duntara Harbour, Red Cliff (with Bluye Point Horizon subfacies') and Broad Head.Normore, L. S. 2012: GEOLOGY OF THE RANDOM ISLAND MAP AREA (Nts 2C/04), Newfoundland. Current Research (2012) Newfoundland and Labrador Department of Natural Resources Geological Survey Report 12-:121–145.