The Geology of Sedimentary Rocks Part 2: Marine Rocks

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A discussion of the types of clastic rocks, their occurrence in Britain and the environments where they were formed.

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Sedimentary Rocks: the formation & environment of deposition of clastic (sandstones & shales) rocks.

A discussion of the types of clastic rocks, their occurrence in Britain and the environments where they were formed such as in estuaries, deltas, seas and the deep ocean.

Geologists divide the rocks into three main types: sedimentary, igneous and metamorphic rocks. Sedimentary rocks are the most common in the British Isles and were deposited from about 500 million years ago when complex life began on the Earth to the present day.

In these talks, we will walk through the sedimentary rocks of Britain and discuss how these rocks were formed. You will then be able to look at any rock or stone building in Britain and predict the environment and even age of deposition as Britain has slowly moved from near the South Pole to its current temperate latitudes over the last 500 million years.

In the second talk, we will look at sedimentary rocks formed in a marine environment such as deltas, on the continental shelfs or even in the deep sea for example when parts of Britain were associated with oceanic depths over 400 million years ago.

Martin Eales was educated at Emmanuel College Cambridge then researched for a doctorate and lectured at Glasgow University. He has been a petroleum geologist for 40 years including working for the largest oil companies in the Netherlands, Belgium, France and Italy, and also lived in North Africa and the Middle East. In that time, he has studied the geology of most countries in the world and now works part time advising companies and banks on the value of their oil assets. He is married with 3 children and 1 dog.

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Organizer The Third Age Trust

Organizer of The Geology of Sedimentary Rocks Part 2: Marine Rocks

The u3a movement is a unique and exciting organisation which provides, through its u3as, life-enhancing and life-changing opportunities. Retired and semi-retired people come together and learn together, not for qualifications but for its own reward: the sheer joy of discovery!

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