The dispersal of the Gondwana Super-fan System in the eastern Mediterranean: New insights from detrital zircon geochronology

Kydonakis, Konstantinos; Kostopoulos, Dimitrios; Poujol, Marc; Brun, Jean‐Pierre; Papanikolaou, Dimitrios; Paquette, Jean‐Louis

doi:10.1016/j.gr.2013.05.009

Cited by 43 publications

(20 citation statements)

References 87 publications

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“…An age distribution with African meta‐cratonic and Pan‐African peaks is diagnostic of sedimentary rocks sourced from Gondwana or peri‐Gondwanan terranes. Additionally, the DZ age spectra (Figure ) of the studied preplutonic metasedimentary rocks share a striking resemblance to the DZ age spectra of the Phyllite‐Quartzite unit exposed on Crete and in the northern and central Peloponnese (Chatzaras et al, ; Kydonakis et al, ; Zulauf et al, ), as well as to the northern Hellenides (Himmerkus et al, ) and to the siliciclastic cover sequence of the Menderes massif in western Turkey (Zlatkin et al, ). These dominant, Gondwanan‐sourced age modes and the lack of Laurussian‐source age modes (e.g., ~1,100‐1,300 Ma, “Grenville peaks”; e.g., Safonova et al, , and references therein) suggests that the preintrusive to synintrusive metasedimentary host rocks on Ios are part of a peri‐Gondwanan terrane, likely the Hunic superterrane rifted from eastern portions of western Gondwana (Stampfli & Borel, ).…”

Section: Chronostratigraphy and Provenance Of Metasedimentary Rocksmentioning

confidence: 74%

“…The similarity to DZ age spectra from northeast Africa and Arabia indicates that in the early Paleozoic, this terrane was along the northern margin of Gondwana, receiving sediments from the Gondwanan superfan system, which actively drained much of northern and eastern Gondwana during the late Neoproterozoic and early Paleozoic (e.g., Kydonakis et al, ; Meinhold et al, ). Our interpretation that CB metasedimentary rocks have a distinct peri‐Gondwanan affinity is in agreement with Keay and Lister ().…”

Section: Chronostratigraphy and Provenance Of Metasedimentary Rocksmentioning

confidence: 98%

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Tectono‐magmatic and Stratigraphic Evolution of the Cycladic Basement, Ios Island, Greece

et al. 2019

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The Cycladic Basement (CB) and the overlying Cycladic Blueschist Unit (CBU) are part of the Paleogene Cycladic subduction complex exposed in Miocene metamorphic core complexes in the distended back‐arc of the retreating Hellenic subduction zone of the southern Aegean. While the Cenozoic tectono‐metamorphic evolutions of the CB and the CBU have been the foci of numerous studies, this study presents new laser ablation inductively coupled plasma mass spectrometry bedrock and detrital zircon (DZ) U‐Pb ages that place robust constraints on the presubduction tectonic, magmatic, and paleogeographic evolution of the CB. Zircon U‐Pb ages of crystalline CB are ~306‐330 Ma, demonstrating local plutonism associated with regional voluminous, protracted Carboniferous magmatism related to Paleo‐Tethys subduction. The plutons intruded the CB metasedimentary host‐rock sequence, characterized by distinct Gondwanan DZ U‐Pb provenance, Neoproterozoic to early Paleozoic maximum depositional ages, and synmagmatic, contact metamorphic zircon rims (~300‐330 Ma). DZ U‐Pb dating revealed postmagmatic Permian metasedimentary rocks (~270‐295 Ma) that unconformably overlie the CB and have unimodal DZ spectra that indicate exhumation of the CB prior to Permian deposition within extensional basins, as well as mark the onset of CBU deposition prior to formation of the Pindos rift domain. These U‐Pb results clarify the late Paleozoic‐early Mesozoic evolution of the CB as a peri‐Gondwanan terrane composed of Neoproterozoic and early Paleozoic metasedimentary rocks, intruded by voluminous Carboniferous arc magmatism, and exhumed in the Permian, prior to Triassic rifting and CBU deposition. Additionally, these data provide a chronostratigraphic framework and illuminate subduction‐related juxtaposition within the CB metasedimentary sequence.

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Section: Chronostratigraphy and Provenance Of Metasedimentary Rocksmentioning

confidence: 74%

Section: Chronostratigraphy and Provenance Of Metasedimentary Rocksmentioning

confidence: 98%

Tectono‐magmatic and Stratigraphic Evolution of the Cycladic Basement, Ios Island, Greece

et al. 2019

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“…The Vertiskos Unit of the Chalkidiki peninsula, northern Greece, is a complex unit with a poly‐metamorphic history (Figure ). Its pre‐Jurassic history can be described in terms of a coherent metamorphic fragment that detached from the northern Gondwanan margin and was incorporated into the Variscan Arc of southern Europe during the Carboniferous [ Kydonakis et al ., ]. Equivalent units can now be traced to Bulgaria and to Serbia farther north [see Zagorchev , ; Dimitrijevic , ; see also Kounov et al ., , ].…”

Section: Discussionmentioning

confidence: 97%

Upper Cretaceous exhumation of the western Rhodope Metamorphic Province (Chalkidiki Peninsula, northern Greece)

et al. 2014

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The Vertiskos Unit of northern Greece is an elongated basement belt with a complex poly-metamorphic history. It extends from Greece (Chalkidiki peninsula), to the south, up to Serbia, in the north, and arguably represents the westernmost part of the Rhodope Metamorphic Province (northern Greece to southern Bulgaria). The Vertiskos Unit experienced a medium pressure lower amphibolite-facies metamorphic overprint during the Alpine Orogeny. The available medium-temperature geochronology implies that it remained at temperature of approximately 300°C (or slightly higher) during Lower Cretaceous. In order to constrain its post-Lower Cretaceous thermal history, until near-surface exposure, we applied apatite fission track analysis. The central ages obtained range from 68.5 ± 3.8 to 46.6 ± 3.6 Ma (uppermost Cretaceous to Middle Eocene) and mean track lengths between 13 and 13.5 μm. We applied two inverse thermal modeling approaches using either each sample independently (high degree of freedom in the thermal history, better data fit) or all samples together interpreting them as a vertical profile (simpler thermal history, worse data fit). Irrespective of the modeling approach, we conclude that the bulk thermal history of the Vertiskos Unit crosses the high-temperature limit of the apatite partial annealing zone by the uppermost Cretaceous and reaches near-surface conditions as early as lower/middle Eocene. These results contrast with the thermal history of the other domains of the Rhodope Metamorphic Province further east (namely the Southern Rhodope Core Complex and the Northern Rhodope Complex) and establish the Vertiskos basement complex as the oldest exhumed coherent basement fragment of the Rhodope Metamorphic Province and Greece.

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“…Stenian-Tonian zircons are usually detrital grains supposed to have traveled from distant sources (Avigad et al, 2012;Kydonakis et al, 2014;Linnemann et al, 2011;Meinhold et al, 2011;Morag et al, 2011;Rösel et al, 2014), where zircons of similar ages are found in their original igneous host rocks. Notwithstanding, its finding has been pivotal to several paleogeographic and paleotectonic reconstructions (e.g.…”

Section: The Pyrenees As Source Areamentioning

confidence: 99%

Provenance of quartz-rich metamorphic tectonite pebbles from the “Black Flysch” (W Pyrenees, N Spain): An EBSD and detrital zircon LA–ICP-MS study

et al. 2014

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The dispersal of the Gondwana Super-fan System in the eastern Mediterranean: New insights from detrital zircon geochronology

Cited by 43 publications

References 87 publications

Tectono‐magmatic and Stratigraphic Evolution of the Cycladic Basement, Ios Island, Greece

Tectono‐magmatic and Stratigraphic Evolution of the Cycladic Basement, Ios Island, Greece

Upper Cretaceous exhumation of the western Rhodope Metamorphic Province (Chalkidiki Peninsula, northern Greece)

Provenance of quartz-rich metamorphic tectonite pebbles from the “Black Flysch” (W Pyrenees, N Spain): An EBSD and detrital zircon LA–ICP-MS study

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