Determination of the tectonic vector of a thrust sheet is possible by analysis of the structures associated with emplacement. The orientation of linear structures, asymmetric folds, trust surfaces and high-angle reverse faults indicates the movement direction of an allochthonous sheet. This information may be important in areas where no stratigraphical evidence of transport direction is available, such as Mt. Olympos in N.E. Greece, where an allochthonous metamorphic sheet rests on Mesozoic platform carbonates. The basis of current palinspastic interpretations is that the metamorphic sheet moved across the platform from thrust the N.E. in the Tertiary. Emplacement structures, however, indicate transport in the opposite direction. This was probably as a result of the final closing of a small ocean basin which lay west of Olympos during the Mesozoic. A re-interpretation of the Tertiary structure of the Hellenides is necessary.

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