Full Set of Aqa A2 Tectonics Notes

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FULL SET OF NOTES ON TECHTONICS
2012
AQA GEOGRAPHY
FULL SET OF NOTES ON TECHTONICS
2012
AQA GEOGRAPHY

TECHTONICS|
TOPICS| UNDERSTOOD/COVERED?|
PLATE MOVEMENT| |
SEISMICITY| |
VULCANICITY | |
These notes were copied from an AQA textbook. They contain EVERYTHING you need to know for the exam for the tectonics section.

You WILL however, need to use your own case studies as these are not included.

You will need 2 case studies for volcanoes, and 2 case studies for earthquakes. You ideally need to have one LEDC and one MEDC for each.

You could use Iceland and Pinatubo for the volcanoes; and Haiti and Japan for the earthquakes These notes were copied from an AQA textbook. They contain EVERYTHING you need to know for the exam for the tectonics section.

You WILL however, need to use your own case studies as these are not included.

You will need 2 case studies for volcanoes, and 2 case studies for earthquakes. You ideally need to have one LEDC and one MEDC for each.

You could use Iceland and Pinatubo for the volcanoes; and Haiti and Japan for the earthquakes

CORE- size of mars, densest part, made of rocks of iron and nickel. Rigid upper mantle, apart from this most of the mantle is semi molten with temperatures near the core reaching 5000 degrees. These high temperatures generate convection currents.

Thinnest layer is the crust which has the coolest less dense rocks. These rocks are rich In silicon o2 aluminium potassium and sodium.

TWO TYPES OF CRUST: Oceanic and continental. Composed of mainly sedimentary, metamorphic and igneous rocks. Continental crust can be 70km thick. CORE- size of mars, densest part, made of rocks of iron and nickel. Rigid upper mantle, apart from this most of the mantle is semi molten with temperatures near the core reaching 5000 degrees. These high temperatures generate convection currents.

Thinnest layer is the crust which has the coolest less dense rocks. These rocks are rich In silicon o2 aluminium potassium and sodium.

TWO TYPES OF CRUST: Oceanic and continental. Composed of mainly sedimentary, metamorphic and igneous rocks. Continental crust can be 70km thick.

PLATE TECHTONIC THEORY:
People had noticed that certain continents looked like they had once fitted together. Evidence built up over time and Alfred Wegner was allowed to publish his theory. He suggested that they were once all joined and called Pangaea. Wegner proposed that at some time land had drifted apart.

Evidence included:

1)Continental fit: seemed to fit together if placed besides each other.

2) Geological Evidence: rocks of the age and type are found in SE Brazil and South Africa. The trends of mountains in East USA and NW Europe are similar when they are placed in old positions. Similar glacial deposits are found in Antarctica, S America

3) Climatological Evidence: Places as far apart as Antarctica, North America and the UK all contain coal deposits of similar age that were formed in tropical conditions. They are no longer in tropical climate zones and must have drifted apart.

4)Biological Evidence: Similar fossil formations are found on either side of the Antartic. Same reptile called meosaurus is found only in S America and South Africa sediments. Plant remains, PLATE TECHTONIC THEORY:

People had noticed that certain continents looked like they had once fitted together. Evidence built up over time and Alfred Wegner was allowed to publish his theory. He suggested that they were once all joined and called Pangaea. Wegner proposed that at some time land had drifted apart.

Evidence included:

1)Continental fit: seemed to fit together if placed besides each other.

2) Geological Evidence: rocks of the age and type are found in SE Brazil and South Africa. The trends of mountains in East USA and NW Europe are similar when they are placed in old positions. Similar glacial deposits are found in Antarctica, S America

3) Climatological...
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