Abstract

Subsidence and shallow-water sedimentation occurring within a few tens of millions of years after cratonic stabilization of shields can be shown by at least three sedimentary suites: the Wajid Formation of southwestern Saudi Arabia; the Roraima Formation of Venezuela and neighboring countries; and the Baraboo interval of Wisconsin and nearby states. This subsidence indicates that complete attainment of present crustal thickness of the shield areas did not occur at the time of crustal stabilization. Instead, crustal growth and uplift were passive processes extending, perhaps, for several hundred million years after stabilization.

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