A public record of the stone in your built environmentExplore the mapBrowse all locationsFor researchersAbout the project
London Pavement Geology — home
Submit a location

Now extended for the rest of the UK

  • Explore
    • Map of all sites
    • Search Locations
  • Browse
  • Submit a Location
  • About
    • About this project
    • Project History
    • Further Reading
    • Useful Links
    • Mobile App
  • Contact

Categories

AllIgneousMetamorphicSedimentaryFossilStructure
 
 
 

Home/Explore the map/Browse A–Z: S

St Thomas's Church

Firestone Sill

  • Sedimentary
  • Sandstone
  • Upper Carboniferous

This stone is older than it looks. Send it to someone five minutes away.

  • WhatsApp (opens in a new tab)
  • Bluesky (opens in a new tab)
  • X (opens in a new tab)
  • Facebook (opens in a new tab)
  • Email

See the message

Just found Firestone Sill in St Thomas's Church.

Upper Carboniferous sandstone, quarried at Weardale, County Durham, England, UK. Nearest stop: Stanhope (Weardale Railway).

This stone is older than it looks — worth five minutes if you're nearby.
https://www.londonpavementgeology.co.uk/location/5215-st-thomas-s-church/

Location Details

Back to Map

Location of Geological Feature
Slabs of a white, slightly iron stained, laminated, fine grained sandstone are common in the rubble masonry. The Firestone Sill outcrops and was quarried just above the village.
Rock Type
Sandstone
Geological Age
Upper Carboniferous
Quarry Location
Weardale, County Durham, England, UK
Category
Sedimentary
Nearest station
Stanhope (Weardale Railway)
Address
9, High Street DL13 2UP
Date of build
C12th, Restored 1850s
Find out more
Stone identified by Ruth Siddall. Photo of Church by Paula Street.
St Thomas's Church — Firestone Sill
Firestone Sill at St Thomas's Church
Firestone Sill at St Thomas's Church (detail 2)
    Entry submitted by Ruth Siddall

More stone at St Thomas's Church

  • Durham Grit
  • Whinstone

Nearby

The closest other recorded buildings.

  • Stanhope Fossil TreeLower Coal Measures60 m · about 1 min walk
  • Stanhope Market CrossHarehope Limestone70 m · about 1 min walk
  • Regenare SculptureFrosterley Marble70 m · about 1 min walk
  • The Bonny Moorhen PubDurham Grit80 m · about 1 min walk
  • Durham Dales CentreStainmore Sandstone90 m · about 1 min walk
  • Blanchland Post OfficeStainmore Sandstone12 km

Suggest an Edit


London Pavement Geology

A public record of the stone in your built environment.

Like the site? Buy us a coffee

Explore

Map of all sitesSearch locationsBrowse every location

Contribute

Submit a locationContact us

About

About this projectProject historyFurther readingUseful links

Funding, sponsorship and supporting institutions

  • Marelambis Ltd.
  • University College London
  • Petroleum Exploration Society of Great Britain
  • Geologists' Association Curry Fund
  • Geoscience Wales
  • The Geological Society
  • London Geodiversity Partnership

With donations from individuals in the oil and gas industry who wish to remain anonymous.

Building stone data by Ruth Siddall, Dave Wallis and contributors. Project founded by Dave Wallis.

Privacy policyCookie policyTerms© 2026 London Pavement GeologyWeb design by Livetech

We would like to use Google Analytics to see which pages people find useful. It sets cookies in your browser, so we only do it if you say yes. Nothing about you is identified individually. What we use and why.