On the Isle of Wight, southern England, the monoclinal structure of Mesozoic and Tertiary strata is actually related to more complex folding of Alpine age, and an attempt is made to determine more precisely the relation to the Tertiary time scale. Allowing for the erosion of the considerable thickness (4,000 feet + or -) of Cretaceous and Tertiary strata that must have existed, and the deposition of the beds, it seems likely that folding could have had a duration of less than a million years, and that it occurred late in the Miocene period.

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