Computer Code: |
BJR |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
Lithological Description: |
Ignimbritic rhyolite flows. |
Definition of Lower Boundary: |
none recorded or not applicable
|
Definition of Upper Boundary: |
none recorded or not applicable
|
Thickness: |
none recorded or not applicable
|
Geographical Limits: |
Within the outcrop of the Jersey Volcanic Group in northern Jersey. |
Parent Unit: |
Jersey Volcanic Group (JYVO)
|
Previous Name(s): |
St John's Rhyolite Formation [Obsolete Code: Use BJR]
(TRH)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
none recorded or not applicable |
Reference(s): |
Power, G M and Gibbons, W. 1993. Precambrian rocks in the Channel Islands. 98-104 in Gibbons, W and Harris, A L (editors), A revised correlation of Precambrian rocks in the British Isles. Geological Society, London, Special Report No.22. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |