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Geology 112
1.4 Plate Tectonics
Question | Answer |
---|---|
Why is Earth interior hot? | 30% from earth's formation, 70% radioactive decay |
Alfred Wegener? | Proposed the first coninental drift model based on the 'jigsaw' fit of all the coninents plus showed that all the ice sheets and share fossils |
Pangaea? | Super continent 300 Ma ago |
Benioff Zone? | Area under subduction zone, earth quakes and volcanism 200kms |
Bathemetry of MOR? | 2500m above sea floor |