%0 Journal article
%A Kilias, Adamantios
%A Frisch, Wolfgang
%A Avgerinas, Asterios
%A Dunkl, Istvan
%A Falalakis, George
%A Gawlick, Hans-Jürgen
%T Alpine architecture and kinematics of deformation of the northern Pelagonian nappe pile in the Hellenides
%R 10.23689/fidgeo-2784
%J Austrian Journal of Earth Sciences
%V 103
%N 1

%X Geological mapping and detailed structural investigations combined with geochronological and stratigraphic data, as well as fissiontrack age dating carried out on the northern part of the Pelagonian basement and the adjacent Vardar/Axios sedimentary and metamorphic sequences in the Hellenic Alps (northwestern Greece and Former Yugoslavian Republic of Macedonia) allow us to reconstruct the geometry, kinematics and deformation history of the Pelagonian nappe pile during the Alpine orogeny. We distinguish seven deformational events (D and D to D ). Deformation started in Middle to Late Jurassic time and was associated with inneroceanic HP 1 6 thrusting, ophiolite obduction, and NW- to WNW-directed nappe stacking of the Lower and Upper Pelagonian unit (D ). The lower unit 1 was metamorphosed under greenschist to amphibolite facies conditions with relatively high pressures (T=450-620°C, P=8-12,5 kb). Blueschist-facies metamorphic assemblages (D , T=450-500°C, P>12,5 kb) are restricted to the boundary zone between both Pela- HP gonian units. Transgressive Late Jurassic to Early Cretaceous shallow-water limestones and clastic sediments on top of the obducted ophiolites are probably related to extension and basin formation simultaneously with nappe stacking and metamorphism in the Pelagonian nappes beneath. Contractional tectonics with the same kinematics as during D continued in Aptian-Albian time and was asso- 1 ciated with intense retrogression (D , T=280-380°C, P=4-5 kb). Low-angle mylonitic extensional shear zones of low-grade metamor- 2 phism with top-to-NE sense of movement (D ) developed simultaneously with basin formation and sedimentation of shallow-water 3 limestones and flysch-like sediments in Late Cretaceous to Paleocene times. Intense imbrication under semi-ductile to brittle conditions of all tectonic units occurred during Paleocene to Eocene time with SW-directed movement towards the foreland (D ). A large 4 Pelagonian antiformal structure formed during D shortening. In Oligocene to recent time, D and D created brittle low- and high- 4 5 6 angle normal faults, respectively.
%U http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/7097
%~  FID GEO-LEO e-docs