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Bearreraig Sandstone Formation

Topic: Earth

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Bearreraig Sandstone Formation
Stratigraphic range: Toarcian-Bajocian
~182–171 Ma
Perforated headland below Glasnakille - geograph.org.uk - 2542017.jpg
Cross-bedded sandstone of the Bearrereaig Sandstone Formation near Glasnakille, Skye
TypeFormation
Unit ofHebrides Basin
Sub-unitsDruim An Fhurain Sandstone Member, Garantiana Mudstone Member
UnderliesCullaidh Shale Formation
OverliesRaasay Ironstone Formation
Thicknessup to 488 m (1,601 ft)
Lithology
PrimaryCalcareous sandstone
OtherLimestone, mudstone
Location
Coordinates [ ⚑ ] : 57°30′N 6°06′W / 57.5°N 6.1°W / 57.5; -6.1
Paleocoordinates [ ⚑ ] 45°54′N 4°36′E / 45.9°N 4.6°E / 45.9; 4.6
RegionHebrides Basin, Inner Hebrides, Ardnamurchan, Scotland
Country United Kingdom
Type section
Named forBearreraig Bay
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The Bearreraig Sandstone Formation is a geological formation in Scotland. It preserves fossils dating back to the lower to middle parts of the Jurassic period (Toarcian–Bajocian).[1] The remains of the proximal portion of a right ulna and radius of an indeterminate thyreophoran dinosaur are known from the formation.[2] The ichthyosaur Dearcmhara is also known from the formation.[3]

See also

  • List of fossiliferous stratigraphic units in Scotland

References

  1. ↑ British Geological Survey. "Bearreraig Sandstone Formation". http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=BEAS. 
  2. ↑ Clark, N. D. L. (2001-05-01). "A thyreophoran dinosaur from the Early Bajocian (Middle Jurassic) of the Isle of Skye, Scotland". Scottish Journal of Geology 37 (1): 19–26. doi:10.1144/sjg37010019. ISSN 0036-9276. http://mr.crossref.org/iPage?doi=10.1144%2Fsjg37010019. 
  3. ↑ Brusatte, Stephen L.; Young, Mark T.; Challands, Thomas J.; Clark, Neil D. L.; Fischer, Valentin; Fraser, Nicholas C.; Liston, Jeff J.; MacFadyen, Colin C. J. et al. (April 2015). "Ichthyosaurs from the Jurassic of Skye, Scotland" (in en). Scottish Journal of Geology 51 (1): 43–55. doi:10.1144/sjg2014-018. ISSN 0036-9276. http://sjg.lyellcollection.org/lookup/doi/10.1144/sjg2014-018. 

Further reading

  • R. M. Bateman, N. Morton, and B.L. Dower. 2000. Early Middle Jurassic plant communities in Northwest Scotland: Paleoecological and paleoclimatic significance. GeoResearch Forum 6:501-512




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