{{Short description|Geologic group in Leicestershire, the United Kingdom}} {{Infobox rockunit | name = Brand Group | map = | map_caption = | type = Group | age = Cambrian {{Fossil range|534.5|520|ref=<ref name="McIlroyBrasier">{{cite journal |last1=McILROY |first1=D. |last2=Brasier |first2=M. D. |last3=Moseley |first3=J. B. |title=The Proterozoic–Cambrian transition within the ‘Charnian Supergroup’ of central England and the antiquity of the Ediacara fauna |journal=Journal of the Geological Society |date=March 1998 |volume=155 |issue=2 |pages=401–411 |doi=10.1144/gsjgs.155.2.0401}}</ref>}} | period = Cambrian | prilithology = Pelite | otherlithology = Quartzarenite, Greywacke, Breccia, Shale, Conglomerate | namedfor = | namedby = | region = Leicestershire | country = United Kingdom | coordinates = | unitof = Charnwood terrane | subunits = <ref name="MoseleyFord">{{cite web |last1=Moseley |first1=John |last2=Ford |first2=Trevor |title=The Sedimentology of the Charnian Supergroup |url=https://www.emgs.org.uk/uploads/1/4/9/1/149143154/mg11_4_1989_251_moseley_ford_sedimentology_of_the_charnian_supergroup_2.pdf |publisher=Mercian Geologist}}</ref> * Swithland Formation * Brand Hills Formation **Stable Pit Quartzarenite Member | underlies = | overlies = * Diorite unconformity <ref name="McIlroyBrasier"/> ** Maplewell Group<ref name="MoseleyFord"/> | thickness = 355 m (1,164 ft)<ref name="MoseleyFord"/> | extent = | area = }}
The '''Brand Group''' is a geologic group in Leicestershire. It preserves Ichnotaxon dating back to the Cambrian period. It mainly contains pelites, with greywacke and breccia.<ref name="MoseleyFord"/>
== Formation units ==
It is made up of two formations. Uppermost within the group is the Swithland Formation, consisting of purple pelites and fine greywackes, with thin discontinuous shale-pebble conglomerates at its base.<ref name="MoseleyFord"/> This is underlain by the Brand Hills Formation, which consists of quartzarenite interbedded with pelite, greywackes and berrica.<ref name="MoseleyFord"/>
In ascending stratigraphic order (lowest to highest): *Swithland Formation *Brand Hills Formation **Stable Pit Quartzarenite Member
== Dating ==
With the discovery of ''Teichichnus'' in the Swithland Formation, alongside several other ichnogenera,<ref name="McIlroyBrasier"/> researchers have been able to confidentially date the Brand Group to the Lower Cambrian, which led to the group being taken out of the Charnian Supergroup, and has also led to the research and discovery of a major hiatus and diorite intrusion between this group and the underlying Maplewell Group, which is dated to the Ediacaran and correlates to other Avalon and White Sea assemblage groups. Using Zircon U-Pb dating, a date is returned of {{val|603|2|ul=Ma}}, suggesting the intrusion is Lower Edicaran in age.<ref name="McIlroyBrasier">{{cite journal |last1=McILROY |first1=D. |last2=Brasier |first2=M. D. |last3=Moseley |first3=J. B. |title=The Proterozoic–Cambrian transition within the ‘Charnian Supergroup’ of central England and the antiquity of the Ediacara fauna |journal=Journal of the Geological Society |date=March 1998 |volume=155 |issue=2 |pages=401–411 |doi=10.1144/gsjgs.155.2.0401}}</ref>
==See also== {{Portal|Earth sciences|United Kingdom|Paleontology|}} * List of fossiliferous stratigraphic units in the United Kingdom
==References== * {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 8 July 2014}}
<references/>
Category:Cambrian Europe Category:Geology of Leicestershire Category:Geological groups of the United Kingdom