Date: 31st May 2013

Location: Burlington House, London

Without the maps of the Ordnance Survey, geologists were greatly hampered. The survey accuracy and the depiction of topography enabled geologists to visualise and portray geology as never before. In the British Isles, the OS provided a home for the embryonic Geological Survey from 1835 to 1845. The Geological Society was a key player in the establishment of the Geological Survey within the OS.

The Map Library and Archives of the Geological Society hold a unique collection of early geological maps from before and following the advent of the OS one inch map. In other nations, in subsequent decades, a similar transition from geology on illustrative maps to accurate national survey base maps occurred.  The collection of GB Greenough forms the core of the map archive. For this visit, a selection of maps from the archive will demonstrate the progress to accurate geological mapping in Britain and other European nations.

The visit is open to members of the Charles Close Society as well as to members of HOGG. The CCS is interested in all aspects of Ordnance Survey mapping.


As we will be visiting a working library and examining archival maps spread out in the Lower Library, a limit of 25 visitors at a time has been set. Please arrive at 13:30 for a 14:00 start. Tea or coffee, and biscuits will be served on arrival. The visit ends at 17:00.

This visit is now full, but we will operate a wait list.  Please contact Nina Morgan to enquire about places.