The later geological history of Britain
March 8 @ 10:00 am - March 22 @ 12:00 pm£7.00 - £18.00
the present day.
This is a series of three talks by Alison Tymon on Fridays from 10 am to 12 noon.
The principal geological process between 360 million years ago and present times was the deposition of sediments in shallow seas following the Caledonian mountain building event, a major plate collision which took place during the Ordovician and Silurian periods and created the continental plate on which Britain is located. A variety of sedimentary rocks, such as conglomerates, sandstones, mudstones, limestones and coals, were formed during the many millions of years of erosion of the mountains. The sedimentary rocks contain fossils of plants and animals which are recognised to be of great significance in the evolution of life.
This course will describe the rocks, fossils and structures from the Carboniferous period to the present day, including the volcanic episode which took place about 60 million years ago and the Quaternary ice age during which melting of ice sheets influenced our landscapes. Examples of features in the presentations come from all over Britain and there will be samples of rocks and fossils on display.
Friday 8 th March The hot, wet Carboniferous period; the rocks deposited in shallow seas on a continental shelf, with occasional volcanic episodes: the development of plants and terrestrial animals: the fossils formed from organisms living in warm seas.
Friday 15 th March The sedimentary rocks of lowland England; the mountain building episode at the end of the Carboniferous period: the hot, arid times during the Permian and Triassic periods and the marine and terrestrial rocks which have yielded important economic minerals in Britain: the sedimentary rocks of the Jurassic and Cretaceous periods which display a great variety of environments in which there was abundant life, both on land and in the seas.
Friday 22 nd March The last 65 million years – the Cenozoic era; volcanic action in Britain 60 – 55 million years ago: the rocks and fossils of south-east England: glacial events of the last 2.6 million years during the Pleistocene epoch: the Anthropocene – what is it all about?
Reference: Peter Toghill – The Geology of Britain
Tea and coffee will be served, and all are welcome. There is no need to print out and bring your ticket, as we will have a record of your booking.