The BGS Lexicon of Named Rock Units — Result Details
Dykebar Limestone
Computer Code: | DYLS | Preferred Map Code: | notEntered |
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Status Code: | Index Level | ||
Age range: | Asbian Substage (CR) — Asbian Substage (CR) | ||
Lithological Description: | A pale to dark grey, argillaceous, shelly, bioclastic limestone, interpreted to be of marine origin. | ||
Definition of Lower Boundary: | Generally seen as a change from marine mudstone (Dykebar and Balmore Marine bands) belonging to Lawmuir Formation overlying thin coal or seatrocks. | ||
Definition of Upper Boundary: | Generally a changes to a marine mudstone, the Dykebar and Balmore Marine bands Dykebar and Balmore Marine bands, belonging to the Lawmuir Formation, and overlain by non-marine sandy strata | ||
Thickness: | Up to 1.4 m thick in the Paisley and Glasgow districts, elsewhere represented by the Dykebar and Balmore Marine Bands. | ||
Geographical Limits: | The Paisley and Glasgow area of the Midland Valley of Scotland. | ||
Parent Unit: | Lawmuir Formation (LWM) | ||
Previous Name(s): | Netherfield Limestone Bed [Obsolete Name And Code: Use DYLS]
(NFLM)
Netherfield Limestone [Obsolete Name and Code: Use DYLS] (-2161) |
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Alternative Name(s): | Fiddler Shell Bed |
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Stratotypes: | |||
Reference Section | The Hurlet Borehole NS56SW/333, where it is 0.72m thick in two leaves, at a base depth of 84.26m. | ||
Reference(s): | |||
Forsyth, Hall and McMillan. Hall, Browne and Forsyth. 1998. Geology of the Glasgow district. Memoir for 1:50000 Geological Sheet 30E (Scotland) pp27-30 | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S023 S030 S030 |