Computer Code: |
BLN |
Preferred Map Code: |
BLN |
Status Code: |
Full |
Age range: |
Pusgillian Stage (OP)
— Pusgillian Stage (OP) |
Lithological Description: |
Green and grey silty shales. |
Definition of Lower Boundary: |
Rests on the mudclast conglomerate of the Forge Member of the Mill Formation. |
Definition of Upper Boundary: |
Overlain by flaggy sandstones and siltstones of the Shalloch Formation. |
Thickness: |
c.15m |
Geographical Limits: |
The Girvan area of southwest Scotland. |
Parent Unit: |
Mill Formation (MIF)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
The Black Neuk part of the coast section north of Woodland Point, 2km southeast of Girvan. Ingham (in Fortey et al., 2000). |
Reference(s): |
Ingham, J K. 1992. Excursion 30: Girvan Foreshore. 396-416 in Lawson, J D and Weedon, D S (editors), Geological Excursions around Glasgow and Girvan. Geological Society of Glasgow. |
Fortey, R A, Harper, D A T, Ingham, J K, Owen, A W, Parkes, M A, Rushton, A W A and Woodcock, N H. 2000. A revised correlation of Ordovician rocks in the British Isles. Geological Society Special Report, No.24. |
Harper, D A T, 1984. Brachiopods from the Upper Ardmillan succession (Ordovician) of the Girvan district, Scotland. Part 1. Monograph of the Palaeontographical Society, London. 1-78 (Publication No.565, part of Vol.136 for 1982). |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |