Charnian Supergroup

The Charnian Supergroup is a geologic supergroup in the United Kingdom, and is a part of the wider Charnwood terrane. It preserves fossils dating back to the Ediacaran and through into the Cambrian period, with suggestions that the Brand Group and Maplewell Groups have a major hiatus in-between. It mainly contains volcaniclastics, but is interrupted by and succeeded by greywackes, and is interbedded with pelites, tuffs.

Due to the thickness of the Supergroup, it spans over 61±0 Ma, with a possible lower date of 611±0 Ma and a maximum upper date of 550±0 Ma. This also means that it spans across two Ediacaran assemblages, with the Blackbrook Group and part of the lower Maplewell Group sitting within the Avalon assemblage, whilst the rest of the Maplewell Group sits within the White Sea assemblage.

The Brand Group was originally a part of the supergroup, until the discovery of several ichnogenera, like Teichichnus, which helped to date it to the Lower Cambrian, and was subsequently taken out of the Charnian Supergroup.