Jalovchat Gabbroic Intrusive of the Caucasus: Petrological Study, Geochemical Peculiarities and Formation Conditions

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David Shengelia</a>, <a href="https://publications.waset.org/search?q=Tamara%20Tsutsunava"> Tamara Tsutsunava</a>, <a href="https://publications.waset.org/search?q=Nikoloz%20Maisuradze"> Nikoloz Maisuradze</a>, <a href="https://publications.waset.org/search?q=Giorgi%20Beridze"> Giorgi Beridze</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>The Jalovchat intrusive is built up of hornblende gabbros, gabbro-norites and norites. Within the intrusive hornblende-bearing gabbro-pegmatites are widespread. That is a coarse-grained rock with gigantic hornblende crystals. By its unusual composition, the Jalovchat intrusive has no analogue in the Caucasus. However, petrologically and geochemically, the intrusive rocks were studied insufficiently. For comprehensive investigations, the authors applied appropriate methodologies: Microscopic study of thin sections, petro- and geochemical analyses of the samples and also different petrogenic, rare and rare earth elements diagrams and spidergrams. Analytical study established that the Jalovchat intrusive by its composition corresponds mainly to the mid-ocean ridge basalts and according to geodynamic type belongs to the subduction type. In general, it is an anomalous phenomenon, as in the rocks of such composition crystallization of hornblende and especially of its gigantic crystals is atypical. The authors believe that the water-rich magma reservoir, which was necessary for the crystallization of gigantic hornblende crystals, appeared as a result of melting of water-rich mid-ocean ridge basaltic rocks during the subduction process in Bajocian time.</p> <iframe src="https://publications.waset.org/10008986.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Gabbroic%20intrusive" title="Gabbroic intrusive">Gabbroic intrusive</a>, <a href="https://publications.waset.org/search?q=petrology" title=" petrology"> petrology</a>, <a href="https://publications.waset.org/search?q=geochemistry" title=" geochemistry"> geochemistry</a>, <a href="https://publications.waset.org/search?q=genesis" title=" genesis"> genesis</a>, <a href="https://publications.waset.org/search?q=the%20Caucasus." title=" the Caucasus. "> the Caucasus. </a> </p> <p class="card-text"><strong>Digital Object Identifier (DOI):</strong> <a href="https://doi.org/10.5281/zenodo.1316668" target="_blank">doi.org/10.5281/zenodo.1316668</a> </p> <a href="https://publications.waset.org/10008986/jalovchat-gabbroic-intrusive-of-the-caucasus-petrological-study-geochemical-peculiarities-and-formation-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10008986/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10008986/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10008986/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10008986/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10008986/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10008986/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10008986/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10008986/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10008986/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10008986/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10008986.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">808</span> </span> <p class="card-text"><strong>References:</strong></p> <br>[1] G. Chichinadze. On the genesis of Jalovchat gabbroid intrusive. Bul. of the Acad. of Sciences of the Georgian SSR 85, N. 1, 1977, pp. 113-116. <br>[2] T. Irvine, W. Barager. A guide to the chemical classification of the common volcanic rocks. Canadian J. Earth Sci. V.8, N.5, 1971, pp.523-548. <br>[3] R. Coleman. Ophiolites. Springer-Verlag Berlin-Heidelberg-New York, 1977, 261 p. <br>[4] A. Myiashiro, F. Shido. Tholeiitic and calc-alkaline in relation to the behavior of titanium, vanadium, chromium and nickel. Amer. J. Sci. V. 275, 1975, pp. 265-277. <br>[5] K. Hatzipanagiotou, G. Pe-Pier. Ophiolitic and sub-ophiolitic metamorphic rocks of the Vatera area, Southern Lesbos (Greace): geochemistry and geochronology, 1994, pp. 17-29. <br>[6] L. Beccaluva et al. Magma affinities and fractionation trends in ophiolites. Ofioliti. V.8, N.3, 1983, pp. 307-324. <br>[7] S. Taylor, S. McLennan. The Continental crust: its composition and evolution. London, Blackwell, 1985, 384 p. <br>[8] I. Gamkrelidze. Geological structure of Georgia and geodynamic evolution of the Caucasus. 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Jalovchat Gabbroic Intrusive of the Caucasus: Petrological Study, Geochemical Peculiarities and Formation Conditions