Isle of Portland Quarries - Geology by Ian West
The large limestone tip at West Weares, Isle of Portland is composed of quarry debris from Tout Quarry on the top of the cliff. The Portland Freestone was worked in the quarries in Victorian times, and it was necessary to remove the overburden of basal Purbeck strata.
Portland stone - Wikipedia
Portland stone is a limestone geological formation (formally named the Portland Stone Formation [1]) dating to the Tithonian age of the Late Jurassic that is quarried on the Isle of Portland in Dorset, England. [1] The quarries are cut in beds of white-grey limestone separated by chert beds.
Limestone quarry - Quarrying - Portland Stone Firms
Portland Stone Firms own 5 limestone quarries on the Isle of Portland, with a comprehensive range of iconic stone beds available for your projects. With over 150 years of reserves we can guarantee the future supply of our award winning stone.
Geology of the Isle of Portland, Dorset by Ian West
The Portland Cherty Series is well exposed in the cliffs around the Isle of Portland and also in the deeper quarries. Shown here is an example in the quarrying relic of Nicodemus Knob in northeast Portland, near the Verne Fort; this consists entirely of Portland Cherty Series.
Portland is about 4 miles long by 11/2 miles at its widest, is heavily built-up where it has not been quarried away and its cavernous limestone is only about 70 feet deep. Nevertheless it contains three distinct forms of cave, some with unusual features, varying in sporting and scientific interest.
Stone mining on the Isle of Portland | Agg-Net
2021年11月18日 · Vastly increased levels of house building and other pressures on land use, along with increased levels of environmental awareness amongst residents, have conspired to make the winning of planning permissions to dig new ‘greenfield’ quarries on …
Portland Bill and Sandholes - Geological Field Guide (new …
In general take much care on the rocks, cliffs and quarries of Portland. At almost any cliff and quarry section on the Isle of Portland there is some risk of a rock falling on a person. The map provides location information and some geological data for Portland Bill and adjacent areas.
The Isle of Portland | DIGS – Dorset's Important Geological Sites
The best exposures of the Portland Sand in Dorset are in the cliff sections of the island, where locations on the western cliffs have given their names to several divisions. The Portland Limestone can be seen in both the cliffs and the disused and working quarries.
The Portland Quarries Nature Park has been created on the Isle of Portland to coordinate the restoration of several disused stone quarries that are locally and nationally significant for their geology and biodiversity, creating an innovative cultural destination for local people and visitors.
Portland's Quarries - Visit Dorset
Portland's quarries are fascinating places to explore. They are full of quarryman’s tunnels and gullies, fossil-filled rocks, colourful wildlife and over hidden sculptures. Follow the old horse-drawn tramway routes used to move the Portland stone.