Tectonics: Plate Tectonic Theory history

How do we know this? Part 1 – older evidence ,[object Object],[object Object],[object Object]

How do we know this? Part 2 – New evidence ,[object Object],[object Object],[object Object]

Structure of the earth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The plates ,[object Object],[object Object],[object Object],[object Object],[object Object]

How do we know this? ,[object Object],[object Object],[object Object],[object Object]

Continental Drift??? ,[object Object],[object Object],[object Object]

Evolution of the theory ,[object Object],[object Object]

[object Object],[object Object],You have a cut out and stick together map of this we will do later in the week..... Good old fashioned geography with colouring pencils

[object Object],[object Object]

The fate of Wegener... ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

Convection ,[object Object],[object Object]

Convection – driving forces ,[object Object],[object Object]

Heat source? ,[object Object],[object Object]

MOR ,[object Object],[object Object],[object Object],[object Object]

Sea Floor Spreading ,[object Object],[object Object],[object Object],[object Object]

Magnetic sea floor stripes ,[object Object],[object Object],[object Object],[object Object]

Tectonics: Plate Tectonic Theory history

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