Description

Bedrock exposed between mileage 60.0050 and 60.1630 on the southwest side of Roade cutting south of Courteenhall bridge). The outcrop is loose and unstable and located in the upper part of the slope. The outcrops lie within the railway boundary and the inspection required use of roped access techniques. No outcrop is accessible from the trackside.
The exposed strata belong to the Blisworth Limestone Formation of the Great Oolite Group (Middle Jurassic). Neither the top or the base of the formation exposed. The strata have been divided into a lower and upper unit based on sedimentology, lithology and fossil assemblages.

Lower unit
The lower unit was observed in locations LEC8Loc1 and LEC8Loc4 and comprises a succession of interbedded peloidal packstone, grainstone and mudstone. The packstones are medium to coarse grained and medium grained peloidal and typically laminated or thinly bedded. Some contain bioclasts and bivalves but these limestones are typically less fossiliferous than the overlying units.

Upper unit
The upper unit was observed in all sections and comprises fossiliferous packstones with subordinate mudstone beds and mudstone partings. The beds are oyster rich with common Praeexogyra. Brachiopods Terabratula. Gastropods Nerinea are also present along with echinoderm spines. Bioturbation is common.