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The Birth of Plate Tectonics

The new hypotheses of the early 1960s explained several puzzling sets
of observations. All that remained was a synthesis of these
hypotheses.

The synthesis began in 1965 when Tuzo Wilson introduced the term plate
for the broken pieces of the Earth's lithosphere. In 1967, Jason
Morgan proposed that the Earth's surface consists of 12 rigid plates
that move relative to each other. Two months later, Xavier Le Pichon
published a synthesis showing the location and type of plate
boundaries and their direction of movement.

Since the mid-1960s, the plate tectonic model has been rigorously
tested. Because the model has been successfully tested by numerous
methods, it is now called the plate tectonic theory and is accepted by
almost all geologists.
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References

1. file://localhost/vwdocs/vwlessons/plate_tectonics/part10.html
2. file://localhost/vwdocs/vwlessons/atg.html
3. file://localhost/vw.html
4. file://localhost/vwdocs/vwlessons/plate_tectonics/part12.html