• DR Nigel Woodcock – The History of Building Stone Use in South Cambridgeshire Churches

    St Andrew's Centre School Hill, Histon

    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 […]

    Non Members £3.00
  • Dr Will McMahon – The Oldest Fossilized Trees Ever Found

    St Andrew's Centre School Hill, Histon

    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 […]

    Non Members £3.00