From Mesoproterozoic magmatism to collisional Cretaceous anatexis: Tectonomagmatic history of the Pelagonian Zone, Greece

Tectonics ◽  
2014 ◽  
Vol 33 (8) ◽  
pp. 1552-1576 ◽  
Author(s):  
Filippo Luca Schenker ◽  
Jean-Pierre Burg ◽  
Dimitrios Kostopoulos ◽  
Evangelos Moulas ◽  
Alexander Larionov ◽  
...  
Keyword(s):  
History Of ◽  
Pelagonian Zone

scholarly journals NEW EVIDENCES OF THE LOW-P/HIGH-T PRE-ALPINE METAMORPHISM AND MEDIUM-P ALPINE OVERPRINT OF THE PELAGONIAN ZONE DOCUMENTED IN METAPELITES AND ORTHOGNEISSES FROM THE VORAS MASSIF, MACEDONIA, NORTHERN GREECE

2004 ◽  
Vol 36 (1) ◽  
pp. 558 ◽  
Author(s):  
E. Mposkos ◽  
A. Krone
Keyword(s):  
Mineral Assemblage ◽  
Late Triassic ◽  
High Alumina ◽  
Northern Greece ◽  
Magmatic Arc ◽  
Continental Block ◽  
History Of ◽  
Alpine Metamorphism ◽  
Arc Setting ◽  
Pelagonian Zone

Pelitic rocks of the pre-Alpine "gneiss series" from the Voras Massif record a polymetamorphic history of three metamorphic events; a first HT event indicated by migmatitization phenomena, a subsequent LP-HT event (andalusite-sillimanite series) at 2.5-3 Kbar and 610-640°C, and a third medium-P event at ~11 Kbar and ~550°C. The LP-HT metamorphism is associated with intrusion of Variscan granitoid plutois in a magmatic arc setting. The medium-P metamorphism records an Alpine event (probably Early Cretaceous) indicated by kyanite, chlohtoid, garnet and staurolite formation replacing andalusite and cordierite. The Variscan granitoids and the overlying lithologies of the "schist series" are affected only by the medium-P metamorphism. Granitoids are transformed into phengite orthogneisses having the mineral assemblage phen (Si=3.35-3.47 a.p.f.u.)±Bt-Ab-Kfs- Qtz±Czo±Grt and high-alumina pelites into gamet-chloritoid schists with the mineral assemblage Grt-Ctd-Chl-Ms-Qtz-Rt±llm. The "schist series" which underlies the Late Triassic-Early Jurassic marbles and overlies lithologies of the "gneiss series" and metagranitoids represents protoliths of the Permo-Triassic volcanosedimentary series deposited at the eastern margin of the Pelagonian continental block

Tectonic history of a segment of the Pelagonian zone, northeastern Greece

1981 ◽  
Vol 18 (7) ◽  
pp. 1111-1126 ◽  
Author(s):  
Damian Nance
Keyword(s):  
Large Scale ◽  
Root Zone ◽  
Regional Metamorphism ◽  
Late Eocene ◽  
Metamorphic Rocks ◽  
Tectonic History ◽  
History Of ◽  
Ophiolitic Rocks ◽  
Platform Carbonates ◽  
Pelagonian Zone

Continental metamorphic rocks and ophiolitic bodies within the Pelagonian zone of the Hellenides in the Livadi area, northeastern Greece, show repeated periods of deformation that accompany thermal events of Early Cretaceous and possibly Late Eocene age. Structures associated with the earlier deformation indicate thrusting towards the northeast accompanying regional metamorphism of upper greenschist to lower amphibolite facies. Later structures and a retrogression to lower greenschist facies associated with emplacement of the Livadi ophiolitic rocks into their present position are likewise attributed to northeast-directed thrusting and probably accompanied the allochthonous movement of the Pelagonian basement over the Mesozoic platform carbonates of Mt. Olympos.Emplacement vectors of northeast polarity are inconsistent with tectonic models of the Hellenides involving large-scale southwestward obduction of Mesozoic ophiolites from a single ocean located northeast of the Pelagonian zone. Tectonic models involving the converging emplacement of Mesozoic ophiolites from two oceans lying northeast and southwest of the Pelagonian zone are more compatible with the observed structures, the latter ocean providing a potential root zone for the deformed ophiolitic rocks at Livadi.The orientation of minor structures associated with thrusting that postdates the emplacement of the Livadi ophiolitic rocks is consistent with movement from north to south.

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