1:50 000 Geological Maps
Geological maps show the nature, extent and relative stratigraphical age of the different rocks within a district. Maps are normally available in both flat and folded formats.
Out of print maps
For some districts copies of out of print maps are available through our 'Print-on-demand' service.
These maps are printed as required (normally within 2 days) using a high resolution, high permanence digital printer: the maps are supplied in flat form only.
These maps are indicated by '(POD)' in the list.
Browse all sheet names
In the past, our geological maps have been published in different editions, for example 'Solid', 'Drift', 'Solid & Drift' and 'Solid with Drift', although not all editions have been available for any one district.
Since 2003, new maps and new editions of older maps have been be described as 'Bedrock' (replacing 'Solid'), 'Superficial Deposits' (replacing 'Drift'), and the combined map as 'Bedrock & Superficial Deposits' or, occasionally 'Superficial Deposits and Simplified Bedrock' (see below). Until this replacement is complete, all the existing maps will be available in their current editions.
New map versions
Bedrock maps (formerly 'Solid') show the bedrock (pre-Quaternary) geology, as it would appear if the superficial deposits were removed.
Bedrock and Superficial Deposits maps show the "underfoot geology". Equal emphasis is given to the bedrock and superficial geology: comprehensive information on concealed bedrock formations is also shown.
Superficial Deposits and Simplified Bedrock.
For map sheets areas containing complex superficial deposits overlying complex bedrock, a map classification of 'Superficial Deposits and Simplified Bedrock ' may apply. On these maps, the bedrock is shown simplified to Group or sub-Group level (i.e. individual geological formations are not generally shown). This is to allow clarity, maximum understanding and interpretation of the Superficial Deposits. Maps in this classification thus show bedrock simplified to a greater degree than shown on 'Bedrock and Superficial Deposits' maps.
Superficial Deposits maps (formerly 'Solid & Drift') show the bedrock and superficial deposits with equal emphasis. These maps give the best picture of the 'underfoot' geology.