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10 cards from this deck
Continents move over time by drifting on Earth's mantle
Alfred Wegener
Supercontinent 180 million years ago with all continents joined
Laurasia (north) & Gondwanaland (south)
Identical fossils on continents now separated by oceans
Britain & Scandinavia - same age/composition
Ice erosion on southern continents shows they were near S Pole
Iron minerals in same-age rocks point different directions
New crust at ridges; youngest rocks nearest, older rocks away
1960s when new technology provided supporting evidence
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