The geology and geodynamic significance of the Island of Limnos, North Aegean Sea, Greece

Innocenti, Fabrizio; Manetti, Piero; Mazzuoli, R.; Pertusati, P. C.; Fytikas, M.; Kolios, N.

doi:10.1127/njgpm/1994/1994/661

Cited by 23 publications

(72 citation statements)

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“…Another point of discussion in relation to Maravelis & Zelilidis' (2012) concern that insufficient consideration is given to a southern source, relates to their omission of relevant sedimentological data provided by Caracciolo et al (2011). As reported in our stratigraphic column, the Upper Eocene Fissini-Sardes Unit (at the base of the succession) includes numerous nummulitic limestone olistoliths (Innocenti et al, 1994(Innocenti et al, , 2009a. The occurrence of olistoliths in the Thrace basin has been widely documented (e.g.…”

Section: Geodynamics and Geologymentioning

confidence: 86%

“…Conversely, they comment on the lack, or at least the scarcity, of volcanic particles. Caracciolo et al (2011) documented the important volcanic supply during the deposition of the lower Fissini-Sardes Unit (Innocenti et al, 1994;Innocenti et al, 2009a) and recognized three types of volcanic textures (vitric, microlitic and seriate felsitic types) that prove ( Fig. 8A and B) a strong affinity to the volcaniclastic strata of the Evros basin.…”

Section: Provenance Signaturesmentioning

confidence: 94%

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Reply to the Discussion by Maravelis and Zelilidis on “Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece” by Caracciolo et al. (2011), Sedimentology, 58, 1988–2011.

et al. 2012

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Section: Geodynamics and Geologymentioning

confidence: 86%

Section: Provenance Signaturesmentioning

confidence: 94%

Reply to the Discussion by Maravelis and Zelilidis on “Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece” by Caracciolo et al. (2011), Sedimentology, 58, 1988–2011.

et al. 2012

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“…The sedimentary succession at Limnos (Fig. 4) includes a continuous Middle to Upper Eocene through to Lower Miocene succession, overlain and intruded by 21 to 18 Ma volcanic and subvolcanic bodies (Igneous Complex; Innocenti et al, 1994Innocenti et al, , 2009. The Fissini-Sardes Unit consists of mid-Upper Eocene to Middle Oligocene deep-marine turbidite deposits, about 300 m thick.…”

Section: Northern Aegean Basin (Island Of Limnos)mentioning

confidence: 99%

“…5F). According to Innocenti et al (1994), the faunal association indicates a Middle Eocene (Lutetian) age.…”

Section: Northern Aegean Basin (Island Of Limnos)mentioning

confidence: 99%

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Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece

Caracciolo¹,

Critelli²,

Innocenti

et al. 2011

Sedimentology

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New sandstone petrology and petrostratigraphy provide insights on Palaeogene (Middle Eocene to Oligocene) clastics of the Thrace Basin in Greece, which developed synchronously with post‐Cretaceous collision and subsequent Tertiary extension. Sandstone petrofacies are used as a tool to unravel complex geodynamic changes that occurred at the southern continental margin of the European plate, identifying detrital signals of the accretionary processes of the Rhodope orogen, as well as subsequent partitioning related to extension of the Rhodope area, followed by Oligocene to present Aegean extension and wide magmatic activity starting during the Early Oligocene. Sandstone detrital modes include three distinctive petrofacies: quartzolithic, quartzofeldspathic and feldspatholithic. Major contributions are from metamorphic basement units, represented mostly by low to medium‐grade lithic fragments for the quartzolithic petrofacies and high‐grade metamorphic rock fragments for the quartzofeldspathic petrofacies. Volcaniclastic sandstones were derived from different volcanic areas, with a composition varying from dominantly silicic to subordinate intermediate products (mainly rhyolitic glass, spherulites and felsitic lithics). Evolution of detrital modes documents contributions from three key source areas corresponding to the two main crystalline tectonic units: (i) the Variegated Complex (ultramafic complex), in the initial stage of accretion (quartzolithic petrofacies); (ii) the Gneiss–Migmatite Complex (quartzofeldspathic petrofacies); and (iii) the Circum‐Rhodope Belt. The volcaniclastic petrofacies is interbedded with quartzofeldspathic petrofacies, reflecting superposition of active volcanic activity on regional erosion. The three key petrofacies reflect complex provenance from different tectonic settings, from collisional orogenic terranes to local basement uplift and volcanic activity. The composition and stratigraphic relations of sandstones derived from erosion of the Rhodope orogenic belt and superposed magmatism after the extensional phase in northern Greece provide constraints for palaeogeographic and palaeotectonic models of the Eocene to Oligocene western portions of the Thrace Basin. Clastic detritus in the following sedimentary assemblages was derived mainly from provenance terranes of the Palaeozoic section within the strongly deformed Rhodope Massif of northern Greece and south‐east Bulgaria, from the epimetamorphic units of the Circum‐Rhodope Belt and from superposed Late Eocene to Early Oligocene magmatism related to orogenic collapse of the Rhodope orogen. The sedimentary provenance of the Rhodope Palaeogene sandstones documents the changing nature of this orogenic belt through time, and may contribute to a general understanding of similar geodynamic settings.

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The high-K calc-alkaline to shoshonitic volcanism of Limnos, Greece: implications for the geodynamic evolution of the northern Aegean

Gläser

Grosche

Voudouris

et al. 2022

Contrib Mineral Petrol

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Genetic models for the formation of K-rich magmas in subduction-related settings range from partial melting of subduction-affected mantle sources to melting of crustal rocks depending on the local tectonic framework. The Miocene high-K calc-alkaline to shoshonitic rocks of Limnos Island reflect the magmatic activity in the northern Aegean, which migrated southwards in response to trench retreat and the collision of continental terranes in the Hellenic subduction system. New whole rock and mineral data of basaltic andesites, dacites and monzonites from Limnos indicate that the magmas underwent fractional crystallization of olivine, clinopyroxene, amphibole, apatite, and Fe-Ti oxides at 1100 to 700 °C and 0.5 to 0.1 GPa without significant assimilation of crustal rocks during the magma evolution. The strong enrichment of large ion lithophile elements and light rare-earth elements relative to depleted heavy rare earth and high-field strength elements points towards a mantle source that has been extensively hybridized by subducted sedimentary material. New Sr–Nd-Pb isotope data reveal a distinct isotopic composition of the Limnos rocks with high 207Pb/204Pb at low 206Pb/204Pb and 143Nd/144Nd ratios that is likely related to the subduction of the continental crustal succession of the Apulian block which was subducted prior to the onset of magmatism on Limnos. Partial melting models assuming a hybridized mantle source suggest that the primary melts of Limnos formed by melting of a phlogopite pyroxenite at melting degrees of 5 to 10%. Compositional differences between high-K calc-alkaline and shoshonitic magmas are explained by variable melting degrees and varying amounts of sediment supply to the mantle. The magmatic and tectonic evolution of Limnos island is typical for the Oligocene and Miocene volcanic centres of the migrating western Aegean arc front.

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The geology and geodynamic significance of the Island of Limnos, North Aegean Sea, Greece

Cited by 23 publications

References 0 publications

Reply to the Discussion by Maravelis and Zelilidis on “Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece” by Caracciolo et al. (2011), Sedimentology, 58, 1988–2011.

Reply to the Discussion by Maravelis and Zelilidis on “Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece” by Caracciolo et al. (2011), Sedimentology, 58, 1988–2011.

Unravelling provenance from Eocene–Oligocene sandstones of the Thrace Basin, North‐east Greece

The high-K calc-alkaline to shoshonitic volcanism of Limnos, Greece: implications for the geodynamic evolution of the northern Aegean

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