Computer Code: |
BROSD |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
Callovian Age (JC)
— Kimmeridgian Age (JD) |
Lithological Description: |
Sandstone. |
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: |
none recorded or not applicable
|
Parent Unit: |
Clynekirkton Sandstone Formation (CYK)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
The type section of the Brora Sandstone Member is composite. The majority of the section is in the cliffs on the south bank of the River Brora [NC 905 039], with the uppermost beds exposed south of Ardassie Point. The base of the section is 540 m west of the A9 road bridge, running eastwards to the fault, 140 m east of the bridge. From the fault, there is a gap in the exposure until the uppermost beds are seen on the foreshore south of Ardassie Point [NC 911 038 to 913 041]. |
Reference(s): |
Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. |
Sykes, R M. 1975. The stratigraphy of the Callovian and Oxfordian stages (Middle-Upper Jurassic) in northern Scotland. Scottish Journal of Geology, Vol.11, 51-78. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |