| 词条 | Bull Arm Formation |
| 释义 |
| image = | caption = | type = Formation | period = Ediacaran | age = | prilithology = Volcanics | otherlithology = | namedfor = | namedby = | region = {{Flag|Newfoundland}} | country = {{Flag|Canada}} | coordinates = | unitof = Musgravetown Group | subunits = | underlies = Big Head Formation, Rocky Harbour Formation[1] | overlies = Cannings Cove Formation[2] | thickness = | extent = | area = | map = Bull Arm Formation map.svg | map_caption = Occurrence of the Bull Arm Formation in southeastern Newfoundland }} The Bull Arm Formation is a volcanic formation cropping out in Newfoundland, the youngest of the Musgravetown Group.[3] It is defined as everything between the first and last volcanic horizon, with a recognition that some sandstones will be interbedded, and its start and finish may vary across the region depending on how widespread volcanic horizons are in practice.[4] References1. ^Normore, L.S. (2012). Geology of the Random Island map area (NTS 2C/04), Newfoundland. Curr. Res. Newfoundl. Labrador Dep. Nat. Resour. Geol. Surv. Report 12-, 121–145. {{Geology-stub}}2. ^Normore, L.S. (2012). Geology of the Random Island map area (NTS 2C/04), Newfoundland. Curr. Res. Newfoundl. Labrador Dep. Nat. Resour. Geol. Surv. Report 12-, 121–145. 3. ^Normore, L.S. (2012). Geology of the Random Island map area (NTS 2C/04), Newfoundland. Curr. Res. Newfoundl. Labrador Dep. Nat. Resour. Geol. Surv. Report 12-, 121–145. 4. ^{{cite journal|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}} 1 : Ediacaran Newfoundland and Labrador |
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