Jurassic

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 […]

Cotswold Stone

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

The golden brown to cream stone that typifies Cotswold villages is a Jurassic oolitic limestone and occurs in an outcrop extending from Bath all the way to Lincoln. It is composed of ooids, small spherical or ovoid concretions of calcium carbonate formed in tropical seas far from sources of sediment. Shell fragments and other fossils […]

Bath Stone on Lloyds Bank Ltd., Leominster

Bath Stone

January 1, 201512:00 pmMay 26, 2016 8:51 am

Very high quality Jurassic limestone from the Chalfield Oolite Formation quarried in a variety of locations east of Bath. Many of the Bath Stones come from the Bath Oolite Member which is a true freestone, lacking fossils or lamination. The quality of the best Bath Stones is such that they have been mined deep underground. […]

Portland Stone

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

This famous Upper Jurassic building stone is one of the most important in the country having been used for iconic buildings including St. Paul’s Cathedral and the Cenotaph. It is easily recognised by its pure white or grey colour – lacking the buff or orange tinges of Bath and Cotswold Stone – and its fine […]