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Reveals the stability of vergence orientation in folded areas, suggesting geological consistency over time.
Folded areas results from tectonic movements leaving their traces in rocks. Visible direction of ancient movements (vergence) can be measured directly. The measurements carried out in the eastern Angara area of the Yenisei ridge indicated the stability of vergence spatial orientation for each of two dislocation stages differing in time. This stability phenomenon is believed to be typical of folded areas.
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S. V. Goryainov (1991) studied this question.
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