19 November 2014 - The Geology & Geography of Buckinghamshire

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The Geology and Geography of Buckinghamshire

Talk by Mike Palmer, Keeper of Natural History at Buckinghamshire County Museum

19th November 2014.

Mike gave us a short history of the last 190 million years of Buckinghamshire.

The main characteristics of the geology in Buckinghamshire were formed by the sequential deposition in water of limestone, clay, sandstone and chalk over a period starting 190 million years and finishing 40 million years ago. These layers were then subjected to a tectonic thrust from Africa which, with erosion, resulted in outcrops of the different layers according to their age of deposition. Consequently, we find limestone in the area north of Milton Keynes, clay and sandstone around Aylesbury, and chalk running through Hemel Hempstead and High Wycombe.

Mike went on to describe in detail how the fossilised remains in these different areas could be related to the organisms in the water at the time, and the extreme conditions of heat and chemistry which were applied to their remains.

Members and guests left the meeting in the realisation that there was more under our feet than simple soggy soil!

Red Neale