The Coal Measures Group is a lithostratigraphical term coined to refer to the coal -bearing succession of rock strata which occur in the United Kingdom within the Westphalian Stage of the Carboniferous Period . The succession was previously referred to as the 'Productive Coal Measures'. Other than in Northern Ireland the term is now obsolete in formal use and is replaced by the Pennine Coal Measures Group , Scottish Coal Measures Group and the South Wales Coal Measures Group for the three distinct depositional provinces of the British mainland .
5-861: Within the Pennine Basin the Pennine Coal Measures Group is preceded (underlain) by the Millstone Grit Group which is of Namurian age. It is succeeded (overlain) by the Warwickshire Group which comprises a largely non-productive sequence of red beds . It comprises the: The 'Pennine Basin' includes all of the coalfields of northern England and the English Midlands together with the Canonbie Coalfield of southern Scotland and
10-616: Is a stub . You can help Misplaced Pages by expanding it . Pennine Basin The Pennine Basin is a sedimentary basin which was active during the Carboniferous Period and which reached from the Southern Uplands of Scotland in the north to the former Wales-London-Brabant Massif in the English Midlands to the south. Sediments deposited within the basin are now exposed at the surface throughout
15-535: The Pennines but are also present beneath the surface over a much wider area of northern England and indeed into northeast Wales and just across the border into Scotland. The basin was complex and consisted, at different times, of a variety of sub-basins separated by blocks across which typically sedimentation continued but resulted in much thinner rock sequences. The term, the ' Pennine Block-and-basin Province '
20-617: The coalfields of northeast Wales and Anglesey . A similar scheme operates in the Midland Valley Basin of Scotland . These formations lie above the Namurian-age Clackmannan Group and below an unconformity . In those coalfields to the south of the former Wales-Brabant High i.e. the South Wales , Bristol , Somerset , Forest of Dean and concealed Oxfordshire and Kent coalfields,
25-771: The corresponding group is the South Wales Coal Measures Group. It comprises the: In South Wales, the larger part of what had been the Upper Coal Measures now forms the Pennant Sandstone Formation in the overlying Warwickshire Group. The South Wales Coal Measures Group is preceded (underlain) by the Marros Group . This article about a specific stratigraphic formation in the United Kingdom
#157842