The BGS Lexicon of Named Rock Units — Result Details

Abdy Rock

Computer Code: ABR Preferred Map Code: AbR
Status Code: Index Level
Age range: Duckmantian Substage (CB) — Duckmantian Substage (CB)
Lithological Description: A thinly bedded, fine-grained, ripple cross-laminated, yellowish brown sandstone.
Definition of Lower Boundary: Sharp upward change in a conformable succession from predominantly grey mudstone to sandstone - base of first sandstone above the Abdy or Winter Coal.
Definition of Upper Boundary: Sharp upward change in a conformable succession from sandstone to predominantly mudstone - top of last sandstone bed below the Two-Foot Coal and overlying Maltby (Two-Foot) Marine Band.
Thickness: 0 to 53m
Geographical Limits: From southwest of Wath upon Dearne around the hamlet of Abdy [SK4430 9880], South Yorkshire, to Staincross Common, [SE3300 1100] Barnsley, South Yorkshire.
Parent Unit: Pennine Middle Coal Measures Formation (PMCM)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Yorkshire Main Colliery shaft (SK59NW/4), full thickness recorded from 698.0 to 724.5m. 
Reference Section  Section 250m north of Darton Lane Head, Stainscross Common, South Yorkshire. 
Reference(s):
Mitchell, G H, Stephens, J V, Bromehead, C E N and Wray, D A. 1947. Geology of the Country around Barnsley. Memoir of the British Geological Survey, Sheet 87 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E087