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This Is Planet Earth Dr Liam Herringshaw ( – An Introduction To Geology.

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Presentation on theme: "This Is Planet Earth Dr Liam Herringshaw ( – An Introduction To Geology."— Presentation transcript:

1 This Is Planet Earth Dr Liam Herringshaw (Email – lgh865@hotmail.com)lgh865@hotmail.com An Introduction To Geology

2 In the beginning Introducing me, the course, yourselves

3 About me

4 About the course Class 1. Beginnings...of Geology...of the Earth

5 2. Time Fossil time Absolute time

6 3. Fire Magmas, Volcanoes & Igneous Rocks

7 4. Sand, Mud & Lime Sedimentary rocks Depositional environments

8 5. Folds & Faults Metamorphic rocks Structural geology

9 6. Moving Plates

10 7. Ice & Water Glaciology & Hydrogeology

11 8. Life & Death Fossils and Evolution

12 9. Mines & Yours Economic geology Minerals, oil, gas Human impacts

13 10. The Future

14 Over to you... What do you already know? What do you want to find out? What geological topics interest you most?

15 Course information No class Tuesday May 6 th Extra class at end of course (July 1 st ) Course notes on www.fossilhub.orgwww.fossilhub.org

16 No vestige of a beginning, no prospect of an end

17 1726-1797 “The Father of Geology” Deep Time and Plutonism James Hutton

18 Deep Time Hutton's Unconformity

19 Neptunism vs Plutonism All rocks deposited from water All rocks hot from the underworld

20 Catastrophism vs Uniformitarianism Change by revolution Floods, extinctions, ice ages... Gradual change The present is the key to the past

21 Geological science The Principles of Geology (1830-1833) X religious X philosophical X anthropocentric

22 A second Charles “I, a geologist...” Reefs + sea levels Volcanic islands Fossils

23 Other key figures A course in itself! AnningWegenerSmith

24 Beginnings of Earth Radiometric dates from meteorites Formed ~4.54 Ga (billion years ago)

25 Our ancient Moon Genesis Rock: ~4.1 billion years old

26 Oldest thing on Earth? Zircon, Western Australia, ~4.4 Ga

27 Oldest rocks? Hudson Bay, Canada, 4.28 Ga

28 Oldest rocks in Britain Lewisian complex, 3.1 to 1.7 Ga

29 Inhabitable early Earth?

30 Beginnings of life Archaean bacteria, W. Australia

31 Very simple for a very long time

32 Beginnings of animal life

33 Next week Geological time www.fossilhub.org


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