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Title: The structure, metamorphism and geochronology of the High Pieria Mountains, N. Greece
Author: Yarwood, Geoffrey A.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1978
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The geology of the High Pieria Mountains and the southern edge of the Vermion Mountains in the North Thessaly area of Greece is described in detail. The area stretches from the Veria-KoFani road in the north to the Mavroneri Valley in the south, and from the foot of the eastern slopes of the Pieria to the western slops above the Aliakmon River. An informal stratigraphic scheme is established for the area. Detailed petrological descriptions of the stratigraphic units are given, from which it is shown that they were all metamorphosed in a single episode to the garnet grade of the greenschist facies. It is deduced that the temperature and pressure of the metamorphism lay in the ranges 400 to 450 °C and 6.0 to 6.76kb. Detailed descriptions of the major and minor structures of the units are given, showing that the rocks have been subjected to four deformation episodes, in addition to late high-angle faulting. The first episode was contemporaneous with the metamorphism. The second episode is interpreted as being part of the same orogenic event as the first. The structural work shows that the Pieria Mountains are a stack of thrust sheets (the Pieria allochthon) emplaced in their present position along the basal lavroneri Thrust in post-L. Cretaceous times (probable Eocene). The stack itself was however built up at the time of the first deformation episode. Rb-Sr isotopic evidence shows that this first deformation episode occurred in the Valanginian stage of the L. Cretaceous. In addition the original crystallisation of the Pieria Granodiorite is shown by U-Pb isotopic analysis of zircons to have occurred in the Westphalian stage of the U. Carboniferous. Finally, the current state of knowledge of the pelagonian zone rocks and of the adjacent zones is reviewed, and a tectonic model proposed into which the findings of the study can be fitted.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available