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Old Town Hall

Llanbedrog Porphyry

  • Igneous
  • Felsite Porphyry
  • Ordovician

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

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Just found Llanbedrog Porphyry in Old Town Hall.

Ordovician felsite porphyry, quarried at Llanbedrog, Gwynedd, Wales. Nearest stop: Pwllheli.

This stone is older than it looks — worth five minutes if you're nearby.
https://www.londonpavementgeology.co.uk/location/3914-old-town-hall/

Location Details

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Location of Geological Feature
Blocks of pale coloured porphyritic igneous rock inside the arcade of the building.
Rock Type
Felsite Porphyry
Geological Age
Ordovician
Quarry Location
Llanbedrog, Gwynedd, Wales
Category
Igneous
Nearest station
Pwllheli
Address
8 Market Square LL53 5RU
Date of build
1820
Find out more
Stone identified by the Welsh Stone Forum.
Old Town Hall — Llanbedrog Porphyry
Llanbedrog Porphyry at Old Town Hall
    Entry submitted by Ruth Siddall

More stone at Old Town Hall

  • Pwllheli Microgabbro
  • Pwllheli Microgabbro

Nearby

The closest other recorded buildings.

  • Newborough House (Dental Surgery)Llanbedrog Porphyry40 m · about 1 min walk
  • HSBC BankGwespyr Sandstone40 m · about 1 min walk
  • Principality Building SocietyLarvikite: Blue Pearl40 m · about 1 min walk
  • Tabernacle (Aesthetic Arte)Pwllheli Microgabbro50 m · about 1 min walk
  • Penlan StreetPwllheli Microgabbro60 m · about 1 min walk
  • Oriel-y-Mor TonnauPwllheli Microgabbro70 m · about 1 min walk

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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.

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