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Kordi F, Sepahi, Izadi kiyan. The study of mineral chemistry and thermobarometry of kyanite-bearing rocks in metamorphic complex of Hamedan area. www.ijcm.ir 2018; 26 (1) :3-18
URL: http://ijcm.ir/article-1-1047-en.html
URL: http://ijcm.ir/article-1-1047-en.html
Abstract: (4700 Views)
The study area is located in Hamedan Province adjacent to Alvand plutonic body in the Sanandaj-Sirjan zone. Various contact and regional metamorphic rocks, from low to high grade exist in contact of Alvand plutonic body including schists, hornfelses and migmatites. Kyanite-bearing rocks volumetrically are not widespread but occur as various outcrops (in migmatite, hornfels and quartz-kyanite veins). Kyanite occurs in these rocks with minerals such as andalusite, sillimanite, staurolite and sometimes cordierite with a matrix of quartz, biotite and muscovite and sometimes plagioclase .In the Hamedan region, kyanites can be divided into three major types: 1- Kyanites in the rock matrix, 2- Kyanites pseudomorphs after andalusite porphyroblasts, and 3- Kyanites in aluminosilicates veins. Since, triple or diploid intergrowth of aluminosilicate are not seen in thin sections, it can be concluded that they formed in different stages of metamorphism. Regional metamorphism in the area resembles Buchan-type metamorphism but addition of kyanite to mineral assemblages converted to Barrovian-type metamorphism. The composition of garnet is plotted near almandine, biotite composition, often located in the field of siderophyllite ande composition of plagioclase crystals is andesine in these rocks and staurolite is iron-rich. In thermometry by Ti and XMg in biotite, mesosome of migmatites show temperature of 633˚C and biotites in hornfelses show temperature 483˚C to 587˚C. In thermometry by cation exchange, garnet- biotite (average temperature by all of the calibrations) temperature for hornfels is about 524˚C to 580˚C and for migmatite 618˚C, respectively. In barometry equilibrium thermodynamics method (GPBQ) gives pressure of 3.8 kbar and (GASP) method gives 4.1 kbar for mesosome of kyanite-bearing migmatites.
References
1. [1] Powell R., "Equilibrium Thermodynamics in Petrology, An Introduction", Harper & Row, London (1978).
2. [2] Ferry J. M., Spear F. S., "Experimental calibration of the partitioning of Fe and Mg between biotite and garnet. Contrib", Contributions to Mineralogy and Petrology (1978) 66, 113–117. [DOI:10.1007/BF00372150]
3. [3] Spear F. S., "Metamorphic phase equilibria and pressure- temperature time paths", Mineralogical Society of America. Monograph (1992).
4. [4] Ghent E. D., Stout M. Z., "Geobarometry and Geothermometry of plagioclase-biotitegarnet-muscovite assemblages", Contribiutions to Mineralalogy and Petrolology (1981) 76, 92-97. [DOI:10.1007/BF00373688]
5. [5] Bhattacharya A., Mazumdar A. C., Sen S. K., "Fe-Mg mixing in cordierite: constraints from natural data and implication for cordierite–garnet geothermometry in granulites", American Mineralogist (1992) 73, 338–344.
6. [6] Sepahi A. A., Whitney D. L., Baharifar A. A., "Petrogenesis of andalusite- kyanite- silimanite veins and host rocks, Sanandaj- Sirjan metamorphic belt", Journal of Metamorphic Geology (2004) 22, 119- 134. [DOI:10.1111/j.1525-1314.2004.00502.x]
7. [7] Baharifar A. A., "Petrology of metamorphic rocks of the Hamedan region", Ph. D. Thesis, Tarbiat-Moallem University (2004), 218 P.
8. [8] Sepahi A. A., Cavosie A., "Isotope thermometry of quartz-aluminosilicate veins of Hamedan area using oxygen stable isotopes", Iranian Journal of Crystallography and Mineralogy (2005) 13, 245-258.
9. [9] Molaee-Yeganeh T., "The study of controlling factor of distribution of kyanite in metamorphic and plutonic rocks of the Hamedan region", M. Sc. Thesis, Bu-Ali Sina University (2008), 148 P.
10. [11] Mohajjel M., Sahandi M., "Evolution of northwest of Sanandaj-sirjan zone and introduction of new sub-zones", Geosciences Quarterly (1999) 16, 31-32.
11. [12] Sepahi A. A., "Petrology of Alvand plutonic complex with special reference to granitoids" Ph. D. Thesis, Tarbiat-Moallem University (1999), 325 P.
12. [14] Deer W. A., Howie R. A., Zussman J., "An Introduction to the Rock Forming Minerals", Longman, London (1992).
13. [15] Dale J., Holland T. J. B., "Geothermobarometry, P-T paths and metamorphic field gradients of high-P rock from the Adula Nappe, Central Alps", Journal of Metamorphic Geology (2003) 21, 813-829. [DOI:10.1046/j.1525-1314.2003.00483.x]
14. [16] Droop G.T.R., Bucher-Nurminen K., "Reaction textures and metamorphic evolution of sapphirine-bearing granulites from the Gruf Complex, Italian Central Alps", Journal of Petrology (1984) 25, 766-803. [DOI:10.1093/petrology/25.3.766]
15. [17] Henry D.J., Guidotti, C.V., "Titanium in biotite from metapelitic rocks: Temperature effects, crystal-chemical controls, and petrologic applications", American Mineralogist (2002) 87 375-382. [DOI:10.2138/am-2002-0401]
16. [18] Henry D.J., Guidotti C.V., Thomson J.A., "The Ti-saturation surface for low-to-medium pressure metapelitic biotites: implications for geothermometry and Ti substitution mechanisms implications for geothermometry and Ti-substitution mechanisms", American Mineralogist (2005) 90, 316-328. [DOI:10.2138/am.2005.1498]
17. [19] Thompson A. B., "Mineral reaction in olitic rocks: 1 Prediction in P–T–X (Fe–Mg) phase relations. II. Calculations of some P–T–X (Fe–Mg) phase relations", American Journal of Science (1976) 276, 401-454.
18. [20] Goldman D. S. Y., Albee A.L., "Correlation of Mg/Fe partitioning between garnet and biotite with 18O/16O partitioning between quartz and magnetite", American Journal of Science (1977) 277, 750-767. [DOI:10.2475/ajs.277.6.750]
19. [21] Hodges K. V. Y., Spear F. S., "Geothermometry, geobarometry and the Al2SiO5 triple point at Mt. Moosilauke, New Hampshire", American Mineralogis (1982) 67, 1118-1134.
20. [22] Perchuk L. L. Y., Larent'eva I. V., "Experimental investigation of exchange equilibria in the system cordierite-garnet-biotite. In: S.K. Saxena (Ed) Kinetics and Equilibrium in Mineral Reactions", Advances in Physical Geochemistry (1983) 3, 199-239.
21. [23] Ganguly J., Saxena S. K., "Mixing properties of aluminosilicate gamets: constraints from natural and cxperimental data, and applicationst o geothermo-barometry", American Mineralogist (1984) 69, 88-97.
22. [24] Perchuk L. L., Aranovich L. Ya., Podlesskii K. K., Lavrenteva I. V., "Precambrain granulites of the Alden Shield, eastern Siberia USSR", Journal Metamorphic Geololgy, (1985) 3, 265–310. [DOI:10.1111/j.1525-1314.1985.tb00321.x]
23. [25] Indares A. Y., Martignole J., "Biotite-garnet geothermometry in granulite facies: the influence of Ti and Al in biotite", American Mineralogist (1985) 70, 272-278.
24. [26] Dasgupta S., Sengupta P., Guha D., Fukuoka M., "A refined garnet–biotite Fe–Mg exchange geothermometer and its application in amphibolites and granulites", Contributions to Mineralogy and Petrology (1991) 109, 130–137. [DOI:10.1007/BF00687206]
25. [27] Reche J., Martinez Francisco J., "An Excel spreadsheet for thermobarometric calculations in metapelitic rocks", Computers & Geosciences (1996) 22, 775-784. [DOI:10.1016/0098-3004(96)00007-6]
26. [28] Hoisch T. D., "Equilibria within the mineral assemblage quartz + muscovite + biotite + garnet + plagioclase, and implications for the mixing properties of octahedrally-coordinated cations in muscovite and biotite", Contributions to Mineralogy and Petrology 108 (1990) 43-54. [DOI:10.1007/BF00307325]
27. [29] Newton R. C. Y., Haselton H.T., "Thermodynamics of the garnet-plagioclase-Al2SiO5-quartz geobarometer. In: R.C. Newton A. Navrotsky, and B. J. Wood (Eds) "Thermodynamics of Minerals and Melts". Advances in Physical Geochemisty (1981) 1, 129-145.
28. [30] Hodges K. V. y., Crowley P. D., "Error estimation and empirical geothermobarometry for pelitic systems", American Mineralogist (1985) 70, 702-709.
29. [31] Koziol A. M., Newton R. C., "Grossular activity-composition relationships in ternary garnets determined by reserved displaced-equilibrium experiments", Contributions to Mineralogy and Petrology (1989) 103, 423-433. [DOI:10.1007/BF01041750]
30. [32] Koziol A. M. Y., Newton R. C., "Redetermination of the anorthite breakdown reaction and improvement of the plagioclase-garnet-Al2SiO5-quartz geobarometer", American Mineralogist (1988) 73, 216-223.
31. [33] Yardly B.W.D., "An introduction to metamorphic petrology", Longman (1991) 248 p.
32. [34] Kerrick D.M., Spear J.A., "The role of minor element solid solution on the andalusit-silimanit equilibrium in metapelites and peraluminous granitaids", American Journal of Science (1988) 288, 152-192. [DOI:10.2475/ajs.288.2.152]
33. [35] Holdoway M.J., "Stability of andalusite and the aluminum silicate phase diagram", American Journal of Science (1971) 271, 881–892.
34. [36] Ganguly J., "Chloritoid stability and related parageneses: theory experiments and applications", American Journal of Science (1996) 267, 910-944.
35. [37] Thompson A.B., "Calc–silicate diffusion zones between marble and politic schist", Journal of Petrology (1975) 16, 314-346.
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