Computer Code: |
RHNC |
Preferred Map Code: |
RHNC |
Status Code: |
Pending Upgrade |
Age range: |
Pragian Age (DP)
— Pragian Age (DP) |
Lithological Description: |
Chert with plant remains, with minor interbedded cherty sandstones. |
Definition of Lower Boundary: |
Lower boundary is where cherty material overlies weathered shales. |
Definition of Upper Boundary: |
Upper boundary where succeeded by argillaceous and arenaceous rocks. |
Thickness: |
2.23 metres in Trench No.3; 2.36 metres in Trench No.1. |
Geographical Limits: |
Not defined. |
Parent Unit: |
Dryden Flags Formation (DRY)
|
Previous Name(s): |
Rhynie Chert Formation [Obsolete Name And Code: See RHNC]
(RCF)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
40 metres south-south-west of Windyfield, near Rhynie, Sheet 76W, Scotland. |
Reference(s): |
Mackie, W. 1914. The rock series of Craigbeg and Ord Hill, Rhynie, Aberdeenshire. Transactions of the Geological Society of Edinburgh, Vol. 10, p. 205-236. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S076
|