Siltstone

Crinoids in Wenlock Limestone ("Ledbury Marble") cobble, Ledbury

Wenlock Limestone

April 1, 201312:00 pmMay 26, 2016 9:30 am

Pale grey nodular or thinly bedded limestones. In character it varies markedly across the region. Examples from the Malvern Axis hills (Abberley, Suckley etc.), Ledbury and Woolhope Dome can be spectacularly fossiliferous, corresponding to reef bodies. During the Silurian water depth deepened towards open ocean to the west and around Ludlow the Wenlock limestone is […]

Aymestry Limestone, Gatley Park Folly, Leinthall Earls

Aymestry Limestone

January 1, 201312:00 pmMay 26, 2016 9:08 am

Blue-grey, hard, nodular argillaceous limestone. The presence of the strongly ribbed brachiopod Kirkidium knightii is diagnostic for this formation. Widely used in the Mortimer Forest, Woolhope Dome, Suckley Hills and Ledbury areas. The character of the formation, like most of the Silurian strata, can vary markedly between a massive limestone suitable for dimension stone to […]

Close-up of Ludlow Shales in Bank House, Leintwardine (copyright Scenesetters)

Ludlow Shales

January 1, 201312:00 pmMay 26, 2016 9:08 am

Olive-blue-grey calcareous siltstones, silty mudstones and mudstones. From a building-stone perspective a classification for the Silurian strata based on rock type is most appropriate, not least because the best building stone yielded by this ‘series’ – the Aymestry Limestone – is diachronous and, in the north-west part of Herefordshire, tends to be variable in its […]

Jurassic Blue Lias siltstone, Rainbow Hill, Worcester

Blue Lias

January 1, 201312:00 pmMay 26, 2016 9:07 am

A blueish-grey lime mudstone used quite widely in South Worcestershire. Few if any traces remain of the quarries which were presumably backfilled and now lie under agricultural land. Originally most building may have been rendered as The Lias generally weathers quite poorly when exposed. It is easily recognised by its pale blueish colour, thin tabular […]