Crown Hill Formation

Crown Hill Formation
Stratigraphic range: 550  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Unit of	Musgravetown Group [1]
Underlies	Random Formation (conformably, in Random Island area) [2] Others (elsewhere)
Overlies	Rocky Harbour Formation [3]
Lithology
Primary	Volcanic non-marine
Location
Region	Newfoundland
Country	Canada
Occurrence in southeast Newfoundland

Crown Hill Formation is a late Ediacaran volcanic non-marine sedimentary formation in Newfoundland. ^[4] It's topped off with a bright red conglomerate, with silt and arkose sands of similar hue too. ^[5]

It's subdivided into nine facies, including (on Random Island) Brook Point, Duntara Harbour, Red Cliff (with Bluye Point Horizon subfacies') and Broad Head. ^[2] (on Cape St Mary's) Cross Pt Member, Hurricane Brook Mmbr ^[5]

References

1. "Newfoundland and Labrador Geoscience Atlas". geoatlas.gov.nl.ca.
2. 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.
3. Liu, Alexander G.; Tindal, Benjamin H. (April 2021). "Ediacaran macrofossils prior to the ~580 Ma Gaskiers glaciation in Newfoundland, Canada". Lethaia. 54 (2): 260–270. doi:10.1111/let.12401.
4. "Mines and Energy - GeoFiles Search Results".
5. Fletcher, T. P. (2006). "Bedrock geology of the Cape St. Mary's Peninsula, southwest Avalon Peninsula, Newfoundland" (PDF). p. 117.