Locharbriggs Sandstone

Locharbriggs Sandstone was sourced from a cluster of quarries around the town of Locharbriggs, in Dumfriesshire. The stone consisted originally of wind-blown sand that was deposited as sand dunes in a desert environment during the Permian Period (c. 285 million years ago), when Scotland was at roughly the same latitude as southern Ethiopia is today. A tiny proportion of iron, which is in an oxidised (‘rusted’) state, gives the stone a rich orange colour. Locharbriggs Sandstone has been used locally, regionally, nationally and internationally, mainly to form masonry. Today, Locharbriggs Sandstone is extracted for building stone at one quarry.

Building Stone ID 10,014

Geological description

Rock category  
Sedimentary rock
Stone type  
Sandstone
Source bedrock unit  
Locharbriggs Sandstone Formation
Colour  
Orange to light pinkish orange
Grain sorting  
Well-sorted
Grain-size  
Medium sand (0.25 to 0.5 mm)
Cohesion  
Strongly cohesive to moderately cohesive
Water absorption  
High
Fabric  
Parallel lamination to uniform
Distinctive features  
None

Historic significance

Maximum historical geographic reach  
International (score = 4)
Extent of historic building stone quarrying  
Extensive (score = 3)
Historic significance score  
Most significant (score = 7)

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