MINERAL CHEMISTRY AND P-T ESTIMATION OF FORMATION OF GARNETSCHIST MOUNT ARGON (WEST OF ANGORAN MINE)

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SARKHOSHI A.; MOAZZEN M.; IZADYAR J.

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

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Journal: Iranian Journal of Geology Year:2016 | Volume:10 | Issue:38 Page(s): 55-70

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Title

MINERAL CHEMISTRY AND P-T ESTIMATION OF FORMATION OF GARNETSCHIST MOUNT ARGON (WEST OF ANGORAN MINE)

Author(s)

SARKHOSHI A. | MOAZZEN M. | IZADYAR J. | Issue Writer Certificate

Keywords

MINERAL CHEMISTRYQ2

METAPELITIC ROCKSQ2

MOUNT ARGONQ1

NORTH WEST OF IRANQ2

Abstract

The MOUNT ARGON garnet schists contain mineral assemblages of quartz, feldspar, mica and garnet. The chemical composition of, plagioclase, biotite, muscovite and garnet in the studied sample shows that plagioclases are albite-rich, white mica flakes are rich in muscovite end-member, phlogopite-annite is the dominant constituent in biotite and chemical composition of the analysed garnets shows that they are almandine and spessartine-rich. Maximum and minimum pressure and temperature of the studied rocks were estimated by using common calculation methods. The minimum and maximum temperature of metamorphism was calculated using Mg-Fe exchange between garnet and biotite. Considering a nominal pressure of 4 kbar, the highest calculated temperature was 615oC and the lowest temperature was 380oC. These were 644oC and 392oC for pressure of 8 kbar respectively. Also using multi-equilibria calculations, temperature of 800C and pressure of 9kbar were obtained for the peak of the metamorphism and temperature of 450oC and pressure of 7kbar was calculated for the lower part of the metamorphism.. Two phases of metamorphism and deformation affected these rocks. The second deformation was associated with the peak of metamorphism. A decrease in temperature about 351oC with reduced pressure of about 2 Kbars is observed in the METAPELITIC ROCKS.

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References

OLIGOCENE PARTIAL MELTING IN THE TAKAB METAMORPHIC COMPLEX, NW IRAN: EVIDENCE FROM IN SITU U-PB GEOCHRONOLOGY

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APA: Copy

SARKHOSHI, A., MOAZZEN, M., & IZADYAR, J.. (2016). MINERAL CHEMISTRY AND P-T ESTIMATION OF FORMATION OF GARNETSCHIST MOUNT ARGON (WEST OF ANGORAN MINE). IRANIAN JOURNAL OF GEOLOGY, 10(38), 55-70. SID. https://sid.ir/paper/129303/en

Vancouver: Copy

SARKHOSHI A., MOAZZEN M., IZADYAR J.. MINERAL CHEMISTRY AND P-T ESTIMATION OF FORMATION OF GARNETSCHIST MOUNT ARGON (WEST OF ANGORAN MINE). IRANIAN JOURNAL OF GEOLOGY[Internet]. 2016;10(38):55-70. Available from: https://sid.ir/paper/129303/en

IEEE: Copy

A. SARKHOSHI, M. MOAZZEN, and J. IZADYAR, “MINERAL CHEMISTRY AND P-T ESTIMATION OF FORMATION OF GARNETSCHIST MOUNT ARGON (WEST OF ANGORAN MINE),” IRANIAN JOURNAL OF GEOLOGY, vol. 10, no. 38, pp. 55–70, 2016, [Online]. Available: https://sid.ir/paper/129303/en

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