Pennine Middle Coal MeasuresName
98661Province: Central and northern England, North Wales.
Geologic Age: Bashkirian Age-Moscovian Age
Other: Mudstone, sandstone and siltstone with subsidiary coal, ironstone and seatearth mudstone and trace calcite-cemented silicate-sandstone (ganister) and seatearth sandstone. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage - to - Bolsovian Substage (Carboniferous Period) (318-309.5 Ma BP). Interbedded grey mudstone, siltstone, pale grey sandstone and commonly coal seams, with a bed of mudstone containing marine fossils at the base, and several such marine fossil-bearing mudstones in the upper half of the unit. Up to 600m thick across the North Staffordshire Coalfield; about 650m thick in Lancashire; 200m thick in northwest England and in the northwest of the Canonbie Coalfield. The base of the dark grey, fissile mudstone of the Vanderbeckei Marine Band, with eponymous fauna and/or other marine fossils. The top of the dark grey, fissile mudstone of the Cambriense Marine Band, with eponymous fauna and/or other marine fossils. This definition is extended to the Scottish Solway area, which formerly used the top of the Aegiranum (Skelton) Marine Band to define the top of the formation.
Usage: Current name
