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It started in the early Jurrasic (~200 Ma) and did not completely finnish until the Tertiary (60 Ma).

2007-04-17 07:08:34 · answer #1 · answered by QFL 24-7 6 · 0 0

It is caused by the earth trying to balance itself. The tidal shifts are tremendous.

2007-04-17 08:01:33 · answer #2 · answered by JOHNNIE B 7 · 0 0

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