Subject ASC0003vil
The geologist : a popular monthly magazine of geology.
Vol.3 (1860), Page 360 (1860)
Natural History Museum Library, London
BHL Page 46198696
Keywords
contorted beds of alternating limestone saddles saddle-joints Limestone shale strata limestone shale strata saddle-beds mining Alstonfield wing trough huckle compressing force Derbyshire Staffordshire geology joints folds Staffordshire