About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)


Journal of Sedimentary Petrology
Vol. 26 (1956)No. 4. (December), Pages 343-355

Sedimentary Structures in the Upper Carboniferous of North and Central Derbyshire, England

John Trevor Greensmith


Coarse siltstones and sandstones recovered from a series of borehole cores in the Upper Millstone Grit and Lower Coal Measures of Derbyshire exhibit a variety of minor sedimentary structures. The least common show affinities with wash-outs and were probably caused by subsurface water flow. More widespread geographically and stratigraphically are contorted structures in fine-grained sandstones which have originated in some cases by penecontemporaneous flow down shallow submarine slopes and in others by secondary load-casting adjustment or possibly rilling. Associated with the above are two further types of phenomena which consist of infilled, near-vertical tubes. The smaller, with uniform diameters of 1 mm to 4 mm have been ascribed to annelid borings, whereas the origin of the larger, with their irregular morphology are more doubtful although they have been provisionally ascribed to molluscan activities.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24