Hamstone
Golden-brown sedimentary stone, from Ham Hill in Somerset.
Geology
Geology
Karst cave
The most common type of cave, formed by the solution of carboniferous rocks by the action of rainwater.
Geology
Keuper Marl
Now deprecated term for multiple layers of mudstone and siltstone that occur beneath parts of the English Midlands and beyond.
Geology
The Great Stone, Stretford
Grade II listed structure in Stretford, Greater Manchester, probably the base of an Anglo-Saxon cross shaft.
Geology, Yorkshire
Elland flags
Sandstones interbedded with mudstones and siltstones in the Lower Coal Measures of West Yorkshire, once extensively quarried.
Type of bituminous coal.
Coal mining, Geology
Pendleton fault
Geological fault stretching for about 20 miles (32 km) from Bolton in Greater Manchester in the north along the Irwell Valley through Pendleton and south to Poynton in Cheshire.
