PETROGRAPHY AND MINERAL CHEMISTRY OF AMPHIBOLITIC FRAGMENTS IN THE SOUTH OF NAIN OPHIOLITE SKARNS, CENTRAL IRAN

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SHIRDASHTZADEH N.; TORABI G.; SAMADI R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: GEOSCIENCES Year:2017 | Volume:26 | Issue:102 Page(s): 153-164

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Title

PETROGRAPHY AND MINERAL CHEMISTRY OF AMPHIBOLITIC FRAGMENTS IN THE SOUTH OF NAIN OPHIOLITE SKARNS, CENTRAL IRAN

Author(s)

SHIRDASHTZADEH N. | TORABI G. | SAMADI R. | Issue Writer Certificate

Keywords

MINERALOGYQ2

AMPHIBOLITEQ2

SKARNQ2

OPHIOLITEQ2

NAINQ2

Abstract

Some dark green fragments of AMPHIBOLITEs are found within SKARNs at the south of NAIN OPHIOLITE at the northeast of NAIN city. They are similar to ortho-amphibolites (metamorphosed basic rocks) of this OPHIOLITE in hand specimen, but mineralogically they are composed of amphibole (magnesio-hornblende, Mg#>0.95), clinopyroxene (diopside, Mg#~0.61), garnet (grossular – andradite, with Grs~63-87 And~12-35), quartz, and minor amount of calcite and wollastonite. Accessory minerals are including chlorite and prehnite, mostly filling the fractures. Field studies, petrography and mineral chemistry indicate that amphibolitic fragments mineralogically differ from the SKARNs and ortho-amphibolites of this OPHIOLITE; so they can be considered as olistoliths with sedimentary origin (calcic marls of sea floor), turned into amphibolitic rocks (para-amphibolite) during the regional metamorphism at AMPHIBOLITE - granulite facies and low oxygen fugacity.

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APA: Copy

SHIRDASHTZADEH, N., TORABI, G., & SAMADI, R.. (2017). PETROGRAPHY AND MINERAL CHEMISTRY OF AMPHIBOLITIC FRAGMENTS IN THE SOUTH OF NAIN OPHIOLITE SKARNS, CENTRAL IRAN. GEOSCIENCES, 26(102), 153-164. SID. https://sid.ir/paper/31472/en

Vancouver: Copy

SHIRDASHTZADEH N., TORABI G., SAMADI R.. PETROGRAPHY AND MINERAL CHEMISTRY OF AMPHIBOLITIC FRAGMENTS IN THE SOUTH OF NAIN OPHIOLITE SKARNS, CENTRAL IRAN. GEOSCIENCES[Internet]. 2017;26(102):153-164. Available from: https://sid.ir/paper/31472/en

IEEE: Copy

N. SHIRDASHTZADEH, G. TORABI, and R. SAMADI, “PETROGRAPHY AND MINERAL CHEMISTRY OF AMPHIBOLITIC FRAGMENTS IN THE SOUTH OF NAIN OPHIOLITE SKARNS, CENTRAL IRAN,” GEOSCIENCES, vol. 26, no. 102, pp. 153–164, 2017, [Online]. Available: https://sid.ir/paper/31472/en

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