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continental drift theory (arguments (proves drift is possible (vancouver…
continental drift theory
who
Alfred wegner
what
?
theory
continents (
sial
)(rarer) floating on
sima
eventually
drifts
towards
equator
African european plates moves together
westwards
north &south America drift westwards
as
pangea
in
panthalassa
split up
main partition @ mesozoic time
further north, main movements were tritiary in age
gondwanaland & angaraland
force
gravitational forces
mechanism for
mountain building
why
?
variations of climate in one part
or the climatic zones move
either continents must move
arguments
proves drift is possible
vancouver
toowards ottawa
washington moved by 40ft from california
greenland
drifting towards N.Am
paleantological