EVALUATION OF THERMODYNAMIC CONDITIONS (P-T) IN FORMATION OF JANDAQ METAPELITIC SCHISTS (NORTHEAST OF ISFAHAN PROVINCE)

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TABATABAEI MANESH SAYED MOHSEN; SHARIFI MORTEZA

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Journal: PETROLOGY Year:2011 | Volume:2 | Issue:5 Page(s): 81-92

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Information Journal Paper

Title

EVALUATION OF THERMODYNAMIC CONDITIONS (P-T) IN FORMATION OF JANDAQ METAPELITIC SCHISTS (NORTHEAST OF ISFAHAN PROVINCE)

Author(s)

TABATABAEI MANESH SAYED MOHSEN | SHARIFI MORTEZA | Issue Writer Certificate

Keywords

JANDAGH'S METAPELITESQ2

AMPHIBOLITEQ2

AMPHIBOLITES-GREEN SCHIST FACIES BOUNDARYQ2

METAMORPHIC PATHQ2

Abstract

The metapelites of Jandagh, (based on mineral assemblages) can be divided into four categories: quartz- muscovite schists, quartz- muscovite- biotite schists, garnet- muscovite-chlorite schists and garnet- muscovite-staurolite schists. Jandagh's garnet- muscovite-chlorite schists show the first appearance of garnets. These garnets are basically formed of 58-76% almandine 1-18% spessartine and 8-20% grossular. The microprobe analyses along the Grt in Jandagh's metapelitic rocks show that Mg number of garnets varies and increase from core to rim. This is a feature for prograde metamorphism of metapelitic rocks. The well-preserved garnet growth zoning is a sign that metapelites were rapidly cooled and later metamorphic phases had no effect on these. The appearance of staurolite in garnet- muscovite-chlorite schists signifies the beginning of AMPHIBOLITE facies. The absence of zoning in the staurolite contained in these schists suggests the formation and growth of this mineral in a prograde metamorphism occurred at a widely spaced isograde. The thermobarometric study shows that JANDAGH'S METAPELITES were formed within a temperature range of 400-670 oC and a pressure range of 2-6.5 kbar. These results are consistent with the minerals' paragenetic evidence and show effect of metamorphism on Jandagh's pelitic sediments in the limit of greenschist and AMPHIBOLITE facies.

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APA: Copy

TABATABAEI MANESH, SAYED MOHSEN, & SHARIFI, MORTEZA. (2011). EVALUATION OF THERMODYNAMIC CONDITIONS (P-T) IN FORMATION OF JANDAQ METAPELITIC SCHISTS (NORTHEAST OF ISFAHAN PROVINCE). PETROLOGY, 2(5), 81-92. SID. https://sid.ir/paper/197078/en

Vancouver: Copy

TABATABAEI MANESH SAYED MOHSEN, SHARIFI MORTEZA. EVALUATION OF THERMODYNAMIC CONDITIONS (P-T) IN FORMATION OF JANDAQ METAPELITIC SCHISTS (NORTHEAST OF ISFAHAN PROVINCE). PETROLOGY[Internet]. 2011;2(5):81-92. Available from: https://sid.ir/paper/197078/en

IEEE: Copy

SAYED MOHSEN TABATABAEI MANESH, and MORTEZA SHARIFI, “EVALUATION OF THERMODYNAMIC CONDITIONS (P-T) IN FORMATION OF JANDAQ METAPELITIC SCHISTS (NORTHEAST OF ISFAHAN PROVINCE),” PETROLOGY, vol. 2, no. 5, pp. 81–92, 2011, [Online]. Available: https://sid.ir/paper/197078/en

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