The Marsdenian (Namurian R₂) succession west of Blackburn: Implications for the evolution of Pennine Delta Systems

Abstract

A recently driven sewer tunnel west of Blackburn has shown the presence of a thick turbidite sequence between the R. gracile and R. bilingue Goniatite Bands. Above the R. bilingue Band, turbidites pass up through delta slope deposits into delta top fluviatile sandstones, derived from the northeast. The section provides evidence for the westward limit of advance of the pre-R. gracile Kinderscoutian delta slope and also enables a more accurate R, isopachyte map to be drawn.

Climatic Influences on Upper Carboniferous (Serpukhovian to Mid-Bashkirian) Sedimentary Sequences in the UK Pennine and Other European Basins

“…Cyclothem M5 (Figure 19) is dominated by an extensive series of thick sheet channel-sands represented by the Fletcher Bank Grit in Lancashire and the Midgley and Pule Hill Grits in Yorkshire, plus local stratigraphic names [82] [93] [94] [179] [180]. This cyclothem (M5) also sees significant progradation further west into the previously under-filled basin in central Lancashire [179]. Cyclothem M6 is a simple cycle of uncertain status.…”