Swithland Formation

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Swithland Formation
Stratigraphic range: Cambrian 532–520 Ma[1]
File:Disused slate quarry in Swithland Wood - geograph.org.uk - 143623.jpg
Swithland Wood and The Brand, which gave the first half of its name to the formation, which itself can be found here.
TypeFormation
Unit ofBrand Group
Sub-unitsSouth Quarry Slump Breccia, Lubcloud Greywackes and Morley Lane Tuffs Members
OverliesBrand Hills Formation[2]
Thickness260 m (853 ft)[2]
Lithology
PrimaryPelite
OtherShale, Greywacke, Conglomerate
Location
RegionLeicestershire
CountryUnited Kingdom
Type section
Named forSwithland Wood and The Brand

The Swithland Formation is a geologic formation in Leicestershire, and lies within the wider Swithland Wood and The Brand area. It preserves ichnotaxon dating back to the Cambrian period.

Paleobiota

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The Swithland Formation preserves a lot of Cambrian ichnogenera, which are usually attributed to burrowing organisms like marine annelids. The most important one from this formation is Teichichnus, which was the first one found, and the one that proved this Brand Group was Cambrian in age, which also led to the discovery and research of a diorite unconformity between the Brand and Maplewell Groups.[1]

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Ichnogenera

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Genus Species Notes Images
Palaeophycus[1]
  • Palaeophycus isp.
Burrows.
File:Palaeophycus01.JPG
Planolites[1]
  • Planolites isp.
Burrows.
File:Planolites (34663777254).jpg
Skolithos[1]
  • Skolithos isp.
Burrows.
File:Skolithos.jpg
Teichichnus[1]
  • T. rectus
Burrows.
File:Teichichnus burrows.jpg

See also

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References

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