Abstract

Dr. P. Vergely writes: the recent paper by Naylor & Harle brings to light the problem of the highly debated position of the Vourinos ophiolites. I disagree with the authors on the origin of the Vourinos ophiolites, believing that they come from the Vardar zone to the east and not from an ocean to the west at the edge of the Othris region.

The successive tectonic phases given by the authors, are as follows:

—D1: first phase of regional deformation with a NW–SE axial direction,

—D2: second phase with a movement towards the NE and accompanying the thrusting of the ophiolites,

—D3: third and late orogenic phase, with a NE–SW axial direction,

—D4: last phase followed by normal faulting.

I am in agreement on the NE direction of transport of the D2 phase (we saw evidence for this together in 1974), to which can be assigned a probable lower Cretaceous age (JE2 phase, Vergely 1975JE2 phase, Vergely 1976).

This phase is not responsible for the initial thrusting of the Vourinos ophiolites, because of the following observations.

(i) At Ayios Nicolaos, it is clear that the JE2 (D2) folds fold the pre-existing lineation (l1) that was the result of an earlier JE1 (D1) phase. With a N 150º axial direction, these (JE1) folds are isoclinal and accompanied by axial planar flow schistosity. They are contemporaneous with a greenschist-facies metamorphism.

(ii) Within the ophiolites exposed in the watercourse of the Haliakmon river and elsewhere, there are numerous small JE1 folds.

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