Aberrant Cyclic Sedimentation in the Limestone Coal Group of the Stirling Coalfield

Publisher Website
Google Scholar
Abstract
One part of the Limestone Coal Group is particularly variable, both within the stable Kilsyth-Stirling Region and in the unstable basins farther east. It has been studied in detail in the Stirling-Denny-Bo’ness Area. Around Glasgow it comprises parts of three uniform cycles but these become reduced to a single coal in the west of the Stirling Coalfield, only to expand eastwards into a complex of strata, more than 80 ft. thick, which may include 15 partly developed cycles. Still farther east they are reduced once more into a single coal. Isopachytes of the complex do not correspond to those of the Limestone Coal Group as a whole but indicate two troughs containing especially thick and coarse clastic sediments. Isopachytes of sandstone and of shale alone, correspond roughly to those of the whole complex but those of coal show a fairly steady eastward thickening. The variations of the complex are thought to be due to the interaction of normal cyclic sedimentation, regional differential subsidence, local deltaic or flood-plain conditions and local differential subsidence, the last mentioned being party due to the variations in thickness and compaction of the underlying strata.

This publication has 8 references indexed in Scilit: