Mantle peridotites from the Dinaridic ophiolite belt and the Vardar zone western belt, central Balkan: A petrological comparison

Bazylev, B. A.; Popević, A.; Karamata, S.; Kononkova, N. N.; Симакин, С. Г.; Olujić, J.; Vujnovic, L.; Memovic, Emin

doi:10.1016/j.lithos.2008.09.011

Cited by 30 publications

(18 citation statements)

References 99 publications

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“…In the so-called Dinaridic ophiolitic belt, several peridotites from Serbia (Kozara, Č avka, Borja, Sjenički Ozren, and Bistrica massifs) are considered by Bazylev et al (2009) as orogenic lherzolites, genetically unrelated to the ophiolitic suite. The Tinaquillo peridotite that crops out in the Cordillera de la Costa in northern Venezuela (Choi et al, 2007;MacKenzie, 1960;Ostos et al, 2005;Mattson, 1989, 1993; Figure 2) is known for having been used as a source material for experimental studies on partial melting of mantle peridotites (Falloon et al, 1988;Jaques and Green, 1980;.…”

Section: Other Localitiesmentioning

confidence: 99%

“…These include, for instance, the Mt Maggiore ophiolite (Corsica, France; Rampone et al, , 2009Piccardo and Guarnieri, 2011), the western Dinarides (Serbia, Albania, and Othris, Greece; Nicolas and Jackson, 1972;Menzies and Allen, 1974;Nicolas et al, 1999;Bizimis et al, 2000;Bazylev et al, 2009), the Lesvos ophiolite in the east of the Aegean Sea (Koglin et al, 2009), the Monte del Estado massif in Puerto Rico (Marchesi et al, 2011), and -to some degree -the Trinity ophiolite (California; Quick, 1981). As noted earlier (Section 3.4.2.1.2), some lherzolite bodies exposed in ophiolitic belts may actually represent orogenic lherzolites (i.e., fragments of subcontinental mantle) embedded in the suture zones during continent-continent collision (e.g., certain lherzolite bodies from the Dinaridic ophiolitic belt in Serbia - Bazylev et al, 2009). The 'true' ophiolitic lherzolites are generally ascribed to lower melting degrees compared to harzburgitic mantle sections (e.g., Ishiwatari, 1985), a feature that may be explained by the slow-spreading rate at MORs Lagabrielle and Lemoine, 1997;Moores et al, 2000;Nicolas and Boudier, 2003).…”

Section: Ophiolitic Lherzolites (Internal Ligurides)mentioning

confidence: 99%

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Orogenic, Ophiolitic, and Abyssal Peridotites

Bodinier

Godard

2014

Treatise on Geochemistry

194

148

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Section: Other Localitiesmentioning

confidence: 99%

Section: Ophiolitic Lherzolites (Internal Ligurides)mentioning

confidence: 99%

Orogenic, Ophiolitic, and Abyssal Peridotites

Bodinier

Godard

2014

Treatise on Geochemistry

194

148

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“…12). However, a very high fertile mantle residuum (lherzolite) that is abundant in the CDOB ophiolite complexes (LUGOVIĆ et al, 1991;BAZYLEV et al, 2008) has not been previously observed in the ROD mélanges.…”

Section: Tectonomagmatic and Petrogenetic Significance A) Geochemicalmentioning

confidence: 89%

“…Data for mid-ocean ridge basalts -MORB (solid line) compiled from WILSON (1989) In contrast, abundant magmatic amphibole is typical for rocks related to true subduction magmatism, sensu STERN (2004) that is, for the rocks crystallized from melt derived from the mantle wedge, metasomatized by a flux of fluids released from the subducting slab. These volatile-rich magmas produced by hydrous melting of the mantle wedge (TATSUMI larly in La (LUGOVIĆ et al, 1991;BAZYLEV et al, 2008). Subsequent subduction related enrichment of these peridotites in the mantle wedge will never increase La (as well as other LREE) concentration to an extent capable of producing a typical IAT REE pattern of partial melts (SLOVENEC & LUGOVIĆ, 2009).…”

Section: B) Geochemical Group B -Late Jurassic Gabbroic Suitementioning

confidence: 99%

Petrology, geochemistry and tectono-magmatic affinity of gabbroic olistoliths from the ophiolite mélange in the NW Dinaric-Vardar ophiolite zone (Mts. Kalnik and Ivanščica, North Croatia)

Lugović¹,

Slovenec²,

Schuster³

et al. 2015

Geol Cro

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Mafic intrusive rocks are subordinately represented fragments of the oceanic crust in the ophiolite mélange exposed at Mts. Kalnik and Ivanščica located in the NW Dinaric-Vardar ophiolite zone. This ophiolite mélange occurs in the northern area of the Kalnik Unit and represents the SW surface boundary of the Zagorje-Mid-Transdanubian Shear Zone. The mélange, except for mafic intrusive rocks, consists of a chaotic mixture of various extrusive rocks formed in different tectonic settings of the Repno Oceanic Domain (ROD). The ROD was the segment of Neo-Tethys that connects the Meliata-Maliak and Dinaric-Vardar oceanic systems. Previous study of mafic extrusive sequences suggested an 80 Ma period of tectono-magmatic evolution of the ROD from intra-continental rifting during the Anisian, to the formation of proto-arc crust during the Callovian-Oxfordian. The domain exposes ophiolitic rocks in four mélange areas. Isotropic gabbroic rocks that are abundant in two northern areas (Mts. Kalnik and Ivanščica), can be discriminated into three distinct geochemical groups: (A) N-MORB-type gabbro [(Th/Nb) n = 0.99-1.10; (Nb/La) n = 0.95-0.99], (B) IAT-type amphibole gabbro with clear supra-subduction characteristics [(Th/Nb) n = 6.04-8.16; (Nb/ La) n = 0.32-0.42] and (C) BABB-type amphibole-bearing gabbro [(Th/Nb) n = 2.88-4.02; (Nb/La) n = 0.58-0.69].Representative gabbro samples of each geochemical group were dated by the Ar-Ar and/or the K-Ar dating method. The Early Jurassic N-MORB-type gabbros (geochemical group A), ~185 Ma old, signifies a peculiar stage of Palaeo-Tethyan slab break-off. The Late Jurassic IAT-type gabbros (geochemical group B), ~147 Ma old, is the vestige of a nascent intra-oceanic arc, whilst the Early Cretaceous BABB-type gabbros (geochemical group C), ~100 Ma old, provides evidence of magmatism in the back-arc marginal basin. The analyzed gabbroic rocks enable refinement and completion of the geodynamic evolution of the ROD, from the opening of an ensialic back-arc basin during the Ladinian and a continuous spreading event until the Bajocian. Intra-oceanic convergence was initiated in the Bathonian, with the formation of a nascent island-arc during the Tithonian, leading to formation of a Cretaceous ensimatic backarc marginal basin. There are many lines of evidence that correlate the geodynamic evolution of the ROD with the Albanide-Hellenide Neo-Tethyan oceanic segment.

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“…[1,2] and references therein). The geotectonic setting of all these ophiolite belts was mainly determined on the basis of the igneous members of ophiolites, mostly pillow lavas and diabase dykes, and only partly by studying depletion degrees of the underlying mantle peridotites [3][4][5]. Only very rare studies from this region were aimed at investigating orthopyroxene-rich lithologies [6].…”

Section: Introductionmentioning

confidence: 99%

Olivine Websterite Veins Cutting the Rabrovo Serpentinites (South Macedonia): New Evidence of the Arc Setting of the East Vardar Ophiolites?

Boev¹,

Prelević²,

Božović³

et al. 2017

Contributions

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The study reports petrography and mineral chemistry data about an ultramafic vein that cuts the Rabrovo serpentinite (near Valandovo, Southern Macedonia). The serpentinite occurs as a block within a shearing zone of the East Vardar Zone tectonic mélange. The vein corresponds to medium-grained olivine websterite that sometimes displays cumulate-like textures. It is composed of low-Al orthopyroxene (Mg#[mol MgO*100/(MgO + FeO o C. Its pyroxene-rich modal composition suggests that this rock cannot represent a normal lithospheric mantle. Instead, it is supposed that it was formed via magmatic precipitations in the mantle lithosphere. In addition, the Rabrovo olivine websterite shows similar mineral chemical compositions to many other orthopyroxene-rich lithologies worldwide, which origin is commonly associated with subduction settings. Therefore, its presence is considered as additional evidence that the East Vardar ophiolites represent typical supra-subduction ophiolites.

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Mantle peridotites from the Dinaridic ophiolite belt and the Vardar zone western belt, central Balkan: A petrological comparison

Cited by 30 publications

References 99 publications

Orogenic, Ophiolitic, and Abyssal Peridotites

Orogenic, Ophiolitic, and Abyssal Peridotites

Petrology, geochemistry and tectono-magmatic affinity of gabbroic olistoliths from the ophiolite mélange in the NW Dinaric-Vardar ophiolite zone (Mts. Kalnik and Ivanščica, North Croatia)

Olivine Websterite Veins Cutting the Rabrovo Serpentinites (South Macedonia): New Evidence of the Arc Setting of the East Vardar Ophiolites?

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