Engineers and geologists in the construction, minerals and other industries are often unaware of the correct stratigraphical terminology that applies to the strata of their site or project area. This guide presents a series of stratigraphical tables showing current and obsolete names for all the important rock units in the UK. The alphabetical listing of both sets of names enables the user to find the equivalent names quickly and then refer to the relevant tables. Also contains guidance on the principles of stratigraphy and on different ways of dividing the geological column. Produced in conjunction with the British Geological Survey.