Volume 28, Issue 3 (10-2020)
www.ijcm.ir 2020, 28(3): 557-576 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Pourmohammad, Ahmadi Khalaji, Homam, Ebrahimi, Esmaeili, Tahmasebi. Mineral chemistry and geothermobarometry of the metapelites of Geysour metamorphic complex, east of Gonabad. www.ijcm.ir 2020; 28 (3) :557-576
URL: http://ijcm.ir/article-1-1513-en.html
URL: http://ijcm.ir/article-1-1513-en.html
Abstract: (1817 Views)
Geysour area, east of Gonabad, is a part of the northern Lut block. The rocks in this area include granitoid and a series of metamorphic rocks. In metapelitic rocks, the presence of S1 schistosity and the mineral chloritoid are indicative of regional metamorphism. The presence of random textural evidence in minerals such as andalusite, staurolite, muscovite and post-tectonic garnet and silimanite growth within the andalusite margin is characteristic of contact metamorphic rocks. The mineral garnet has two stages of growth, and mainly contains the end-members of Almandine, Grossular and spessartine. Chloritoid and staurolite are ferrous. Muscovite has little paragonite replacement. Chloritization of biotite and garnet, sericitization of andalusite and the occurrence of radial micro-cracks in garnet all indicate a retrograde metamorphism and uplift. Based on conventional geothermobarometric methods, temperature and pressure were calculated in the range of 550-608 oC and 3.8-4.5 Kbar, respectively. The existence of radial micro-cracks around quartz inclusions in garnet is due to a large component of isothermal decompression.
Keywords: Geysour, Gonabad, regional metamorphism, contact metamorphism, geothermobarometer, Lut block.
References
1. [1] Stocklin J., "Structural history and tectonics of Iran, A review", Amer. Ass. Petrol. Geol. Bull., 52 (1968) 1229-1258. [DOI:10.1306/5D25C4A5-16C1-11D7-8645000102C1865D]
2. [2] Stocklin J., Nabavi M. H., "Tectonic map of Iran1:2,500,000", Geological Survey of Iran )1973(.
3. [3] Aghanabati S. A. "Geology of Iran", Geological Survey of Iran, Tehran (in Persian) 2004.
4. [4] Camp V., Griffis R., "Character, genesis and tectonic setting of igneous rocks in the sistan suture zone, eastern Iran", Lithos, 15 (1982), 221-239. [DOI:10.1016/0024-4937(82)90014-7]
5. [5] Tirrul R., Bell I. R., Griffis R. J. Camp V. E., "The Sistan suture zone of eastern Iran" Geological Society of America Bulletin, 94 (1983), 134-156.
https://doi.org/10.1130/0016-7606(1983)94<134:TSSZOE>2.0.CO;2 [DOI:10.1130/0016-7606(1983)942.0.CO;2]
6. [6] Jung D., Keller J., Khorasani R., Marcks C., Baumann A. Horn P., "Petrology of the Teriary magmatic activity in the north Lut area, East of Iran", Ministry of mines and metals. Geological Survey of Iran, Geodynamic Project (Geotraverse), 51(1983), 285-336.
7. [7] Arjmandzadeh R., Karimpour M. H., Mazaheri S. A., Santos J. F., Medina J. M. Homam S. M., "Sr-Nd isotope geochemistry and petrogenesis of the Chah-Shaljami granitoids (Lut block, eastern Iran) ", Journal of Asian Earth Sciences, 41(2011), 283-296. [DOI:10.1016/j.jseaes.2011.02.014]
8. [8] Nabavi M. H., "An introduction to the geology of Iran", Geological Survey of Iran. (1976)109 p.
9. [9] Ghaemi F., "Geological Map 1: 100,000 Nodeh", Geological Survey of Iran(in Persian) (2010).
10. [10] Foley A., "Geological Map of 1: 250000 Gonabad", Geological Survey of Iran (2004).
11. [11] B.R.G.M., "Explanatory text of the Gonabad Quadrangle map 1:250000", Geological Survey of Iran. (1992) p.166.
12. [12] Karimpour M. H., Moradi M., "Petrology of Granodiorite and Monzonites of eastern Najmabad (Gonabad)", 17th Iranian Society of Crystallography and Mineralogy, Bo Ali Sina University, Hamedan. (in persian) (2009)
13. [13] Javadi S., "Petrological investigation of metamorphic rocks of Chah Yousef mountains area north of Geysour village", Mashhad Ferdowsi University. Master thesis. (in persian) (2013).
14. [14] Powell P., Holland T. J. B., "An internally consistent dataset with uncertainties and corre- lations: 3. Applications to geobarometry, worked examples and a computer program", Journal of metamorphic Geology, 6(2)( 1988), 173-204. [DOI:10.1111/j.1525-1314.1988.tb00415.x]
15. [15] Spear F. S., Menard T., "Program GIBBS: A generalized Gibbs method algorithm", American Mineralogist, 74 (1989), 942-943.
16. [16] Spear F. S., Kohn M. J., "Program Thermobarometry, version 2.1", GTB program manual,( 1999) 1-42.
17. [17] Yavuz F., Kumral M., Karakaya N., Karakaya M. Ç., Yıldırım D. K., "A Windows program for chlorite calculation and classification", Computers and Geosciences, 81(2015), 101-113. [DOI:10.1016/j.cageo.2015.04.011]
18. [18] De Capitani, C., Brown, T. H., " The computation of chemical equilibria in complex systems containing non-ideal solutions", Geochimica et Cosmochimica Acta, 51(1987), 2639-2652. [DOI:10.1016/0016-7037(87)90145-1]
19. [19] Kertz R., "Symbols for rock-forming minerals", American Mineralogist, 68 (1983), 277-279.
20. [20] Whitney D.L., Evans B.W., "Abbreviations for names of rock-forming minerals". Am. Mineral. 95,( 2010) 185-187. [DOI:10.2138/am.2010.3371]
21. [21] Pourmohammad A. S., Ahmadi Khalaji A., Homam M., Tahmasebi Z., Ebrahimi M., "Geochemistry, petrogenesis and tectonic setting of Geysour granitoid, East Gonabad", Scientific Quarterly Journal, GEOSCIENCES, 29(2020), 137-150. (in Persian)
22. [22] Homam S. M., Ghaemi F., "The mechanism of fibrolite formation in the contact aureole of Mashhad", Iranian Society of Crystalography and Mineralogy.Vol. 16, No. 1(2008).
23. [23] Barker A. J., "Introduction to metamorphic textures and microstructures", Springer US.( 1998) 275. [DOI:10.1007/978-1-4615-7291-6]
24. [24] Deer W. A., Howie R. A., Zussman J., "Rock-forming minerals: Orthosilicates", Geological Society, Vol. 1A,( 1997) 917.
25. [25] Moazzen M., "Chlorite-Chloritoid-Garnet Equilibria and Geothermometry in the Sanandaj-Sirjan metamorphic belt, southern Iran", Iranian Journal of Science & Technology, Transaction A, 28, No. A1(2004). [DOI:10.1127/0028-3649/2004/2004-0489]
26. [26] Locock A. J., "An Excel spreadsheet to recast analyses of garnet into end-member components, and a synopsis of the crystal chemistry of natural silicate garnets", Computers and Geosciences, 34 (2008), 1769-1780. [DOI:10.1016/j.cageo.2007.12.013]
27. [27] Kohn M. J., Spear F. S., Dalziel I. W. D., "Metamorphic P-T Path from Cordillera Darwin, a core complex in Tierra del Fuego, Chile", Journal of Petrology, 34, part 3,( 1993) 519-542. [DOI:10.1093/petrology/34.3.519]
28. [28] Spear F. S., "Metamorphic phase equilibriua and pressure-temperature-time paths", Mineralogical Society of America, Washington, D. C.,( 1995) 823 p.
29. [29] Kohn M. J., Orange D. L., Spear F. S., Rumble D., III. Harrison T. M., "Pressure, temperature, and structureal evolution of west-centeral New Hampshire: Hot thrusts over cold basement", Journal of Petrology, 33(3)( 1992), 521-556. [DOI:10.1093/petrology/33.3.521]
30. [30] Vance D., Holland T., "A detailed isotopic and petrological study of a single garnet from the Gassetts Schist, Vermont", Contributions to Mineralogy and Petrology, 114(1993), 101-118. [DOI:10.1007/BF00307868]
31. [31] Zane A., Weiss Z., "A procedure for classifying rock-forming chlorites based on microprobe data", Rend. Lincei Sci. Fis. Nat. Ser., 9,( 1998) 51-56. [DOI:10.1007/BF02904455]
32. [32] Plissart G., Féménias O., Mãruntiu M., Diot H., Demaiffe D., "Mineralogy and geothermometry of gabbro-derived list venites in the Tisovita-Iutiophiolite south western Romania", Can. Mineral. 47(2009), 81-105. [DOI:10.3749/canmin.47.1.81]
33. [33] Wiewióra A., Weiss Z., " Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: II. The chlorite group", Clay Minerals, 25( 1990), 83-92. [DOI:10.1180/claymin.1990.025.1.09]
34. [34] Bayliss P., "Nomenclature of the trioctahedral chlorites", Canadian Mineralogist, 13(1975), 178-180.
35. [35] Juurinen A., "Composition and properties of staurolite", Ann. Acad. Sci. Fennicae, Ser. A, III (Geol. Geogr.), 47(1956), 1-53.
36. [36] Holland T.J.B., Powell R., "An internally consistent thermodynamic data set for phases of petrological interest", J. Metamorph. Geol., 16(1998), 309-344. [DOI:10.1111/j.1525-1314.1998.00140.x]
37. [37] Ferry J. M., Spear F. S., "Experimental calibration of the partitioning of Fe and Mg between biotite and garnet", Contributions to Mineralogy and Petrology, 66(1978), 113-117. [DOI:10.1007/BF00372150]
38. [38] Hodges K.V., Crowley P.D., "Error estimation and empirical geothermobarometry for politic systems", Am. Mineral. 70 (1985), 702-709.
39. [39] Foster G., Vance D., Argles T., Harris N., "The Tertiary collision-related thermal history of the NW Himalaya", Journal of Metamorphic Geology, 20(2002), 827-843. [DOI:10.1046/j.1525-1314.2002.00410.x]
40. [40] Pattison D. R. M., Vogl J. J. "Contrasting sequences of metapelitic mineral-assemblages in the aureole of the tilted Nelson Batholith, British Columbia: implications for phase equilibria and pressure determination in andalusite-silimanite-type settings", Canadian Mineralogist, 43(2005), 51-88. [DOI:10.2113/gscanmin.43.1.51]
41. [41] Spear, F. S., Pyle, J. M.,"Theoretical modeling of monazite growth in a low-Ca metapelite", Chemical Geology, 273(2010), 111-119. [DOI:10.1016/j.chemgeo.2010.02.016]
42. [42] Wolfe, O. M. Spear, F. S., "Determining the amount of overstepping required to nucleate garnet during Barrovian regional metamorphism, Connecticut Valley synclinorium", Journal of Metamorphic Geology, 36(2018), 79-94. [DOI:10.1111/jmg.12284]
43. [43] Inoue, A., Meunier, A., Patrier-Mas, P., Rigault, C., Beaufort, D., Viellard, P., "Application of chemical geothermometry to low-temperature trioctahedral chlorites", Clays and Clay Minerals, 57(2009), 371-382. [DOI:10.1346/CCMN.2009.0570309]
44. [44] Kranidiotis, P., and MacLean, W., "Systematic of chlorite alteration the Phelps Dodge massive sulfide deposit, Matagami, Quebec", Econ. Geol. 82(1987), 1898-1911. [DOI:10.2113/gsecongeo.82.7.1898]
45. [45] Cathelineau, M., "Cation site occupancy in chlorites and illites as function of temperature", Clay Miner., 23(1988), 471-485. [DOI:10.1180/claymin.1988.023.4.13]
46. [46] Bourdelle, F. Cathelineau, M.,"Low-temperature chlorite geothermometry: a graphical representation based on a T-R2+-Si diagram", Eur. J. Mineral., 27(2015), 617-626. [DOI:10.1127/ejm/2015/0027-2467]
47. [47] Likhanov, I. I., Reverdatto A. V.V., "Mineral assemblages of the Al2SiO5 "triple point" in metapelites", Doklady Earth Sciences, Vol. 448, No. 2, (2013)pp. 193-196. [DOI:10.1134/S1028334X13010121]
48. [48] Holdaway M. J., Mukhopadhyay B.,"A reevaluation of the stability relations of andalusite: Thermochemical data and phase diagram for the aluminum silicates", American Mineralogist (1993) 78 (3-4): 298-315.
49. [49] Bucher K., Grapes R., "Petrogenesis of Metamorphic Rocks", Springer, 2011. [DOI:10.1007/978-3-540-74169-5]
50. [50] Likhanov I. I., Reverdatto A. V.V., Kozlov P. S., Vershinin A. E., "The Teya Polymetamorphic Complex in the Transangarian Yenisei Ridge: An Example of Metamorphic Superimposed Zoning of Low_ and Medium_Pressure Facies Series", Doklady Earth Sciences, 2011, Vol. 436, No. 4, pp.509-514. [DOI:10.1134/S1028334X11020048]
51. [51] Pattison D.R.M., Tinkham D.K., "Interplay between equilibrium and kinetics in prograde metamorphism of pelites: an example from the Nelson aureole, British Columbia", Journal metamorphic Geol., 2009 27 249-279. [DOI:10.1111/j.1525-1314.2009.00816.x]
52. [52] Kennan P.S., "the Occurrence of cordierite and staurolite in a part of the Leinster granite aureole; a textural study", Sci. Proc. Roy. Soc. Dublin, Ser. A, 5 (1974), 131-136.
53. [53] Wendt A.S., D'Arco P., Goffé B., Oberhänsli R., "Radial cracks around α-quartz inclusions in almandine: constraints on the metamorphic history of the Oman Mountains", Earth and Planetary Science Letters, 114(1993), 449-461. [DOI:10.1016/0012-821X(93)90075-K]
54. [54] Whitney D. L., "Garnets at open systems during regional metamorphism", Geology, 24(1991), 147-150.
https://doi.org/10.1130/0091-7613(1996)024<0147:GAOSDR>2.3.CO;2 [DOI:10.1130/0091-7613(1996)0242.3.CO;2]
55. [55] Whitney D. L.,"Calcium depletion halos and Fe-Mn-Mg zoning around faceted plagioclase inclusions in garnet from a high-grade pelitic gneiss", Am. Mineral., 76(1996), 493-501.
56. [56] Whitney D. L., Cooke M. L., Du Frane S. A., "Modeling of radial microcracks at corners of inclusions in garnet using fracture mechanics", Journal of Geophysical Research, 105(2000), 2843-2853. [DOI:10.1029/1999JB900375]
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
