Computer Code: |
KRY |
Preferred Map Code: |
KRY |
Status Code: |
Full |
Age range: |
Arenig Series (OR)
— Arenig Series (OR) |
Lithological Description: |
Massive and faintly-bedded, fine to very coarse crystal-lithic arenites, laminated silty and cherty mudstones, well-bedded arenites, and sporadic polymict pebble- to boulder-conglomerate. Contains early Arenig graptolites. |
Definition of Lower Boundary: |
Faulted against serpentinite. |
Definition of Upper Boundary: |
Interdigitates with lavas of the Pinbain Formation. |
Thickness: |
c.380m |
Geographical Limits: |
Girvan - Ballantrae area, southwest Scotland. |
Parent Unit: |
Balcreuchan Group (BCN)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
Coast c.180m north of Pinbain Bridge, c.1.5km south of Kennedy's Pass, Girvan, southwest Scotland. Stone, P and Smellie, J L, 1988. |
Reference(s): |
Cameron, I B, Stone, P and Smellie, J, 1986. Geology of the Country around Girvan. Explanation of 1:50 000 sheet. British Geological Survey, Sheet 7, Scotland. |
Stone, P and Smellie, J L, 1988. Classical areas of British Geology: The Ballantrae area: a description of the solid geology of parts of 1:25 000 sheets NX 08, 18 and 19. [London: HMSO for British Geological Survey.] |
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |