A geological survey of about 120 medieval churches in south Cambridgeshire reveals a dominant theme of local fieldstone rubble walls with dressings of local Cretaceous Clunch and imported Jurassic Barnack limestone; the richer the church the greater the volume of costly Barnack. The Cretaceous Ely Sandstone forms rubble walls only near the city. Victorian renovations […]

The evolution of trees and forests through the Devonian Period fundamentally changed the Earth's land biosphere, as well as impacting physical environments and geomorphology by stabilizing sediments and interacting with flowing air and water. In this talk I will describe a recently discovered forest landscape within the Middle Devonian (Eifelian) Hangman Sandstone Formation of Somerset […]

Dr Steve Boreham (BSc PhD) worked for the University of Cambridge for more than 30 years and has a special interest in Southern England, East Anglia, Fenland and the Cambridge District. He is a key member of the CGS Geosites team and in this talk he will describe the geodiversity of the county and its […]

Dominic Davey gave a talk on Septarian Nodules Penny Coggill gave a talk on International Commission on Geo-Heritage Sites Peter Fletcher gave a talk on Carbonatites in Assynt

The presentation summarises the Crossrail project before explaining the main construction methods for the tunnels and stations. The Cretaceous to Holocene geology encountered along the route is presented including both the impact the geology has on the engineering and how recent in- frastructure investigations have developed our knowledge of the geology of London. The discussion […]