MINERALOGY AND GEOCHEMISTRY OF CARBONATITE-SILICATE XENOLITHS OF VOLCANIC ROCKS FROM GHEKLAR AREA WEST OF MARAND (E. AZERBAIJAN PROVINCE)

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JAHANGIRI AHMAD; MOAYED M.

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2008 | Volume:15 | Issue:2 Page(s): 259-270

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Title

MINERALOGY AND GEOCHEMISTRY OF CARBONATITE-SILICATE XENOLITHS OF VOLCANIC ROCKS FROM GHEKLAR AREA WEST OF MARAND (E. AZERBAIJAN PROVINCE)

Author(s)

JAHANGIRI AHMAD | MOAYED M. | Issue Writer Certificate

Keywords

XENOLITHQ3

GHEKHLARQ2

CARBONATITE-SILICATEQ3

MANTLE METASOMATISMQ3

Abstract

In the west of Marand in GHEKHLAR area, the Upper Miocene- Pleistocene volcanic rocks, including intermediate to acidic basic alkaline and lamprophyric, are extensive exposed. Trachy-andesite rocks of this area contain CARBONATITE-SILICATE XENOLITHs, which according to mineralogical studies, arE calcite - carbonatite type. The minerals of calcite, diopside, anorthite, phlogopite, amphibole, apatite, biotite and titano-magnetite are essential minerals, which belong to calcic and hydrous carbonatite types. The dacitic volcanic rocks of this area also contain carbonates globules that formed from calcite and euhedral apatites. These XENOLITHs are geochemically characterized by high content of CaO, Fe2O3, MgO, P2O5, Cr, Ni, V, Cu, Zn which are related to host rock. REE pattern displays fractionated pattern (CeNb)N =24-29 and lack of Eu negative signature. The source of these XENOLITHs can be attributed to disequilibrium partial melting of metasomatized mantle by either released fluids from subducted slab or silicate melts derived from melting of subducted slab. Association of silicates and carbonates in XENOLITHs can be related to mingling and immiscible fluids.

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APA: Copy

JAHANGIRI, AHMAD, & MOAYED, M.. (2008). MINERALOGY AND GEOCHEMISTRY OF CARBONATITE-SILICATE XENOLITHS OF VOLCANIC ROCKS FROM GHEKLAR AREA WEST OF MARAND (E. AZERBAIJAN PROVINCE). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 15(2), 259-270. SID. https://sid.ir/paper/3985/en

Vancouver: Copy

JAHANGIRI AHMAD, MOAYED M.. MINERALOGY AND GEOCHEMISTRY OF CARBONATITE-SILICATE XENOLITHS OF VOLCANIC ROCKS FROM GHEKLAR AREA WEST OF MARAND (E. AZERBAIJAN PROVINCE). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2008;15(2):259-270. Available from: https://sid.ir/paper/3985/en

IEEE: Copy

AHMAD JAHANGIRI, and M. MOAYED, “MINERALOGY AND GEOCHEMISTRY OF CARBONATITE-SILICATE XENOLITHS OF VOLCANIC ROCKS FROM GHEKLAR AREA WEST OF MARAND (E. AZERBAIJAN PROVINCE),” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 15, no. 2, pp. 259–270, 2008, [Online]. Available: https://sid.ir/paper/3985/en

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