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17(No Transcript)
18Volcanic and Nonmarine sediments are deposited in
rift valleys
Fig. 20.17a
19Cooling and subsidence of rifted margin allows
sediments to be deposited
Fig. 20.17b
20Carbonate platform develops
Fig. 20.17c
21Continental margin continues to grow supplied
from erosion of the continent
Fig. 20.17d
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