Dextral rotations and tectonomagmatic evolution of the southern Rhodope and adjacent regions (Greece)

Dimitriadis, S.; Kondopoulou, D.; Atzemoglou, A.

doi:10.1016/s0040-1951(98)00203-0

Cited by 36 publications

(32 citation statements)

References 35 publications

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“…Paleomagnetic rotations are recorded in the whole Aegean domain (Kissel and Laj 1988;Kissel et al 1995Kissel et al , 2002Haubold et al 1997;Dimitriadis et al 1998;Platzman et al 1998;Duermeijer et al 2000). They are mostly clockwise (CW) rotations in the Hellenides and Rhodope and a more complex pattern is seen in the Cyclades and western Turkey.…”

Section: Extension and Block Rotationsmentioning

confidence: 99%

Cenozoic geodynamic evolution of the Aegean

Jolivet

Brun

2008

Int J Earth Sci (Geol Rundsch)

636

619

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now Institut des Sciences de la Terre d'OrléansInternational audienceThe Aegean region is a concentrate of the main geodynamic processes that shaped the Mediterranean region: oceanic and continental subduction, mountain building, high-pressure and low-temperature metamorphism, backarc extension, post-orogenic collapse, metamorphic core complexes, gneiss domes are the ingredients of a complex evolution that started at the end of the Cretaceous with the closure of the Tethyan ocean along the Vardar suture zone. Using available plate kinematic, geophysical, petrological and structural data, we present a synthetic tectonic map of the whole region encompassing the Balkans, Western Turkey, the Aegean Sea, the Hellenic Arc, the Mediterranean Ridge and continental Greece and we build a lithospheric-scale N-S cross-section from Crete to the Rhodope massif. We then describe the tectonic evolution of this cross-section with a series of reconstructions from ~70 Ma to the Present. We follow on the hypothesis that a single subduction has been active throughout most of the Mesozoic and the entire Cenozoic, and we show that the geological record is compatible with this hypothesis. The reconstructions show that continental subduction (Apulian and Pelagonian continental blocks) did not induce slab break-off in this case. Using this evolution, we discuss the mechanisms leading to the exhumation of metamorphic rocks and the subsequent formation of extensional metamorphic domes in the backarc region during slab retreat. The tectonic histories of the two regions showing large-scale extension, the Rhodope and the Cyclades are then compared. The respective contributions to slab retreat, post-orogenic extension and lower crust partial melting of changes in kinematic boundary conditions and in nature of subducting material, from continental to oceanic, are discussed

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Section: Extension and Block Rotationsmentioning

confidence: 99%

Cenozoic geodynamic evolution of the Aegean

Jolivet

Brun

2008

Int J Earth Sci (Geol Rundsch)

636

619

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“…Even if the interpretation of the Southern Rhodope as a metamorphic core complex seems to be widely accepted (e.g. Dimitriadis et al 1998;Kilias et al1999), it is useful to recall the arguments in favour of an extensional origin of the SRCC, considering the complexities due to the superposition in time and space of extension effects over pre-existing thrust structures.…”

Section: Geological Settingmentioning

confidence: 99%

“…In the north Aegean domain, numerous paleomagnetic data demonstrate clockwise, up to 30-35°block rotation since early Oligocene time (see reviews by Kissel and Laj 1988;Dimitriadis et al 1998). To the SW of the SRCC, the Eocene plutons of the Chalkidiki Peninsula have undergone a mean clockwise rotation of 30° (Kondopoulou and Westphal 1986).…”

Section: Block Rotation During Core Complex Exhumationmentioning

confidence: 99%

Kinematics of the Southern Rhodope Core Complex (North Greece)

Brun

Sokoutis

2007

Int J Earth Sci (Geol Rundsch)

208

300

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The Southern Rhodope Core Complex is a wide metamorphic dome exhumed in the northern Aegean as a result of large-scale extension from mid-Eocene to mid-Miocene times. Its roughly triangular shape is bordered on the SW by the Jurassic and Cretaceous metamorphic units of the Serbo-Macedonian in the Chalkidiki peninsula and on the N by the eclogite bearing gneisses of the Sideroneron massif. The main foliation of metamorphic rocks is flat lying up to 100 km core complex width. Most rocks display a stretching lineation trending NE-SW. The Kerdylion detachment zone located at the SW controlled the exhumation of the core complex from middle Eocene to mid-Oligocene. From late Oligocene to mid-Miocene exhumation is located inside the dome and is accompanied by the emplacement of the synkinematic plutons of Vrondou and Symvolon. Since late Miocene times, extensional basin sediments are deposited on top of the exhumed metamorphic and plutonic rocks and controlled by steep normal faults and flat-ramp-type structures. Evidence from Thassos Island is used to illustrate the sequence of deformation from stacking by thrusting of the metamorphic pile to ductile extension and finally to development of extensional Plio-Pleistocene sedimentary basin. Paleomagnetic data indicate that the core complex exhumation is controlled by a 30°dextral rotation of the Chalkidiki block. Extensional displacements are restored using a pole of rotation deduced from the curvature of stretching lineation trends at core complex scale. It is argued that the Rhodope Core Complex has recorded at least 120 km of extension in the North Aegean, since the last 40 My.

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“…Based on the trend of ductile stretching lineations in the Aegean basement rocks, as well as on the palaeodeclination pattern, Walcott and White (1998) suggest that Northern Greece, central Aegean, mainland Greece and Peloponnesus altogether belong to a "Central Aegean Block" which sequentially formed at the expense of an Oligo-Miocene, E-W trending orogen, and rotated from ~25 Ma onward. Dimitriadis et al (1998) also claim that parts of the Rhodope massif underwent minor CW rotations during the Late Oligocene, whereas additional CW rotations occurred after the Early Miocene. They propose that at least the post-Early Miocene rotations in Northern Greece were the result of plate tectonic motion in the Aegean, and of brittle crustal detachment, translation and rotation on top of a stretched ductile lithosphère.…”

Section: Regional Implicationsmentioning

confidence: 90%

“…In that case, Dimitriadis et al (1998) inferred the occurrence of a minor Oligocene CW rotation (8°) followed by additional CW rotation (13°) after the Early Miocene. In the broader area surrounding the Athos peninsula and Samothraki a number of published palaeomagnetic results allow the establishment of a general pattern for the occurrence of rotations after the Eocene (Table 5).…”

Section: Rotation Age and Mechanismsmentioning

confidence: 99%