Bidspirit auction | Geological Survey of Scotland's Sheet

Geological Survey of Scotland's Sheet 15, depicting the Sanquhar district - Solid and Drift edition at a scale of one inch to the mile (1:63,360), a classic series published by the Geological Survey of Great Britain. Location: Covers the Sanquhar area, including parts of the Sanquhar Coalfield and the surrounding Southern Uplands. The map uses distinct colors and patterns to identify various rock layers and geological formations like folds and faults. Vertical Sections: The diagram at the bottom illustrates a geological cross-section, visualizing the subsurface structure of the Earth across the region, from the surface down through different strata. The area is known for its Carboniferous strata, including the Scottish Upper Coal Measures Formation, which consists of mudstones, siltstones, and sandstones with minor coal seams. Maps like this were historically essential for geologists, mining operations, and civil engineering, as they provide a detailed visualization of the local terrain's 500-million-year history of volcanic activity and continental shifts