‘Astronomical Cycles & Climate’ by Jim Riding

This talk will be held at St Francis of Assisi church hall in Kenilworth. We will also attempt to broadcast this talk live on Zoom. To participate via Zoom copy the following path to your web browser;
https://us02web.zoom.us/j/81390717688?pwd=RWlkcEo1Uk4rYUp6V1FHU25kUUFjdz09

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Meeting ID: 813 9071 7688
Passcode: 738647

Summary: In this talk Jim will describe how the Serbian scientist Milutin Milanković discovered the three astronomical cycles affecting our planet, their periodicities and how they can influence the deposition of sedimentary rocks. If we can recognise Milanković cycles, we can use them to work out the durations of major sedimentary successions and thereby refine the geological timescale. Four case histories are given, one Carboniferous, two Jurassic and one Pliocene. Next, I will explain how the use of stable isotope analysis can help us interpret past palaeoclimates and Milanković cycles. 

Jim Riding is a palynologist (fossilised pollen!) working at the British Geological Survey in Nottingham. He is formally retired but is still working as a ‘Honorary Research Associate’.