this is planet earth dr liam herringshaw (email – [email protected])[email protected] an...
TRANSCRIPT
In the beginning
Introducing me, the course, yourselves
About me
About the course
Class 1. Beginnings
...of Geology
...of the Earth
2. Time
Fossil time
Absolute time
3. FireMagmas, Volcanoes & Igneous Rocks
4. Sand, Mud & Lime
Sedimentary rocks
Depositional environments
5. Folds & Faults
Metamorphic rocks
Structural geology
6. Moving Plates
7. Ice & WaterGlaciology & Hydrogeology
8. Life & DeathFossils and Evolution
9. Mines & Yours
Economic geology
Minerals, oil, gas
Human impacts
10. The Future
Over to you...What do you already know?
What do you want to find out?
What geological topics interest you most?
Course information
No class Tuesday May 6th
Extra class at end of course (July 1st)
Course notes on www.fossilhub.org
No vestige of a beginning,no prospect of an end
1726-1797
“The Father of Geology”
Deep Time and Plutonism
James Hutton
Deep Time
Hutton's Unconformity
Neptunism vs Plutonism
All rocks deposited from water
All rocks hot from the underworld
Catastrophism vs Uniformitarianism
Change by revolution
Floods, extinctions, ice ages...
Gradual change
The present is the key to the
past
Geological science
The Principles of Geology
(1830-1833)
X religious
X philosophical
X anthropocentric
A second Charles
“I, a geologist...”
Reefs + sea levels
Volcanic islands
Fossils
Other key figures
A course in itself!
Anning Wegener Smith
Beginnings of Earth
Radiometric dates from meteorites
Formed ~4.54 Ga (billion years ago)
Our ancient Moon
Genesis Rock: ~4.1 billion years old
Oldest thing on Earth?
Zircon, Western Australia, ~4.4 Ga
Oldest rocks?Hudson Bay, Canada, 4.28 Ga
Oldest rocks in Britain
Lewisian complex, 3.1 to 1.7 Ga
Inhabitable early Earth?
Beginnings of life
Archaean bacteria, W. Australia
Very simple for a very long time
Beginnings of animal life
Next weekGeological time
www.fossilhub.org