PETROGENESIS AND GEOTHERMOBAROMETRY OF MAFIC AND ULTRAMAFIC IGNEOUS ROCKS IN OPHIOLITIC COMPLEX OF EASTERN BIRJAND

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FOTOOHI RAD GH.; NOWROUZI GH.; ARYAFAR A.

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Paper Information

Journal: Iranian Journal of Crystallography and Mineralogy Year:2013 | Volume:20 | Issue:4 Page(s): 685-700

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Title

PETROGENESIS AND GEOTHERMOBAROMETRY OF MAFIC AND ULTRAMAFIC IGNEOUS ROCKS IN OPHIOLITIC COMPLEX OF EASTERN BIRJAND

Author(s)

FOTOOHI RAD GH. | NOWROUZI GH. | ARYAFAR A. | Issue Writer Certificate

Keywords

OPHIOLITIC COMPLEXQ2

MAFIC AND ULTRAMAFIC IGNEOUS ROCKSQ2

CUMMULATE SERIESQ2

GEOTHERMOBAROMETRYQ2

BIRJANDQ2

Abstract

The MAFIC AND ULTRAMAFIC IGNEOUS ROCKS of the OPHIOLITIC COMPLEX in eastern BIRJAND) between Sulabest in southern part to north of Gazik in northern part) Have been studied.According to plot of data on diagrams and the result of mineralogy and geochemistry, gabbros and some peridotites belong to CUMMULATE SERIES of spreading sea floor magma (MORB) where some peridotites are of metamorphic (tectonics) types. Magmatic series of igneous rocks are tholeiitic. Trace elemental patterns similarities on spider diagrams also confirming the relations of these rocks to Mg-rich basaltic magma of MORB type. GEOTHERMOBAROMETRY results of some rocks, based on different calibrations, show temperatures of 944LC for gabbros to 1294LC for peridotites. Temperature pressure calculations based on Holland and Powell thermocalc method, indicate, rocks crystallization conditions of 748LC and 17.46 Kb for gabbros to 1282LC and 24.7 -33.6Kb for peridotites. Most obtained temperatures, particularly the thermocalc ones, for crystallization conditions of these rocks from an initial Mg-rich magma, MORB type, in spreading sea floor seems to be reasonable.

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APA: Copy

FOTOOHI RAD, GH., NOWROUZI, GH., & ARYAFAR, A.. (2013). PETROGENESIS AND GEOTHERMOBAROMETRY OF MAFIC AND ULTRAMAFIC IGNEOUS ROCKS IN OPHIOLITIC COMPLEX OF EASTERN BIRJAND. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 20(4), 685-700. SID. https://sid.ir/paper/4060/en

Vancouver: Copy

FOTOOHI RAD GH., NOWROUZI GH., ARYAFAR A.. PETROGENESIS AND GEOTHERMOBAROMETRY OF MAFIC AND ULTRAMAFIC IGNEOUS ROCKS IN OPHIOLITIC COMPLEX OF EASTERN BIRJAND. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2013;20(4):685-700. Available from: https://sid.ir/paper/4060/en

IEEE: Copy

GH. FOTOOHI RAD, GH. NOWROUZI, and A. ARYAFAR, “PETROGENESIS AND GEOTHERMOBAROMETRY OF MAFIC AND ULTRAMAFIC IGNEOUS ROCKS IN OPHIOLITIC COMPLEX OF EASTERN BIRJAND,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 20, no. 4, pp. 685–700, 2013, [Online]. Available: https://sid.ir/paper/4060/en

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