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Mirzaei R, Ahmadi A, Mirnejad H, Boomeri M, Nakashima K. Mineralogy and geothermo-barometry of metapelitic schists, amphibolites and garnet amphibolites from Gol-Gohar metamorphic complex, SW Sirjan, Central Iran.. www.ijcm.ir 2020; 28 (1) :71-82
URL: http://ijcm.ir/article-1-1419-en.html
Abstract:   (2193 Views)
The Gol-Gohar metamorphic complex, a part of east Sanandaj-Sirjan zone, is located 55 km southwest of Sirjan. This complex consists of metapelitic, metapsammitic, and metacarbonatic rocks. Field and geochemical evidences indicate that these sedimentary protolith sequences are composed of shale and sandstone with alternation of carbonate layers in the upper parts. In the studied metapelites, garnets are almandine-rich. Composition of biotite ranges between sidrophyllite and annite and plagioclase varies from albite to anortite (in amphibolite and garnet amphibolite). Oligoclase and andesine are present in schists. Our studies show that amphibolite and garnet amphibolite are types of para amphibolite. The results of thermometry, based on the garnet-biotite pair and barometry through GBPQ method, for these rocks demonstrate that Gol-Gohar metapelite schists were formed within a temperature range of 550-578˚C and a pressure range of 3.7-4.6 kbar (greenschist and lower amphibolite facies). The thermo-barometry studies, based on chemistry of amphibole mineral in the amphibolites and garnet amphibolites, demonstrate 589-613°C and 613-641°C temperatures, 4.7-4.9 kbar and 4.3-5.6 kbar pressure ranges respectively which are indicating of amphibolite facies metamorphic conditions for these rocks. Field evidence and geochemical studies indicate that the evolutionary trend which resulted to the increasing of temperature and pressure from schists to amphibolites and garnet amphibolites are consistent with the mineral paragenesis.
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1. [1] Yaghoobi A., "Investigation of geochemistry and genesis of number 3 anomaly Gol-Gohar deposit", Msc thesis, Shiraz Unieversity, (1999) (130p) (In persian).
2. [2] Poorkhak F., "Paragenesis, Petrogenesis and Petrochemicals of Gol-Gohar Iron Ore (Anomaly No. 30)" Msc thesis, Shahid Bahonar Unieversity, (2003) (296p) (In persian).
3. [3] Babaki A., Aftabi A.J., "Investigation on the model of Iron mineralization at Gol-Gohar Iron deposit, Sirjan-Kerman" Iranian of Geology Science, 16 (61) (2006) 40-59 (in Persian).
4. [4] Bayati rad Y., "Investigation origin of Gol-Gohar iron deposit", Msc thesis, Tehran Unieversity, (2009) (In persian).
5. [5] Asghari g., "Investigation of genesis and formation conditions of Gol-Gohar iron ore deposit and host rocks", Msc thesis, Tehran Unieversity, (2009) (In persian).
6. [6] Torabian S., "Mineralization and genesis of number 3 anomaly in Gol-Gohar mine, based on the trace elements", Msc thesis, Tarbiat Moalem Unieversity, Tehran (2006) (130p) (In persian).
7. [7] Dalfardi M., "Investigation of sulfur origin in minerals of sulfide mines 1, 2 and 3 of Gol-Gohar Iron Ore" Msc thesis, Damghan Unieversity, (2011) (134p).
8. [8] Wu C,M., Cheng B,H., "Valid garnet-biotite (GB) geothermometry and garnet-aluminum silicate-plagioclase-quartz (GASP) geobarometry in metapelitic rocks" Lithos 89 (2006) 1 - 23. [DOI:10.1016/j.lithos.2005.09.002]
9. [9] Stockline J., "Structural history and tectonics of Iran", Areview- Amer: Ass. Petrol, Geol, Bull. 52.7 (1968) 1229-1258. [DOI:10.1306/5D25C4A5-16C1-11D7-8645000102C1865D]
10. [10] Gilg H.A., Boni M., Balassone G., Allen C.R., Banks D., Moore F., "Marble-hosted sulfide ores in the Anguran Zn-(Pb-Ag) deposit, NWIran: interaction of sedimentary brines with a metamorphic core complex", Mineralium Deposita 41 (2006) 1-16. [DOI:10.1007/s00126-005-0035-5]
11. [11] Daliran F., "The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran-hydrothermal alteration and mineralization", Mineralium Deposita 43 (2008) 383-404. [DOI:10.1007/s00126-007-0167-x]
12. [12] Sabzehei M., "Geological map of Iran, 1:00000 series, Gol-gohar quadrangle", Geological Survey, Iran, (1994).
13. [13] Berberian M., "Master blind thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics", Tectonophysics 241 (1995) 193-224. [DOI:10.1016/0040-1951(94)00185-C]
14. [14] Ghalamghash J., Mirnejad H.,"Report of dating Gol-Gohar metamorphic complex, Tehran padir consulting engineer company", 40p (2008).
15. [15] Whitney D., Evans B.,"Abbreviations for names of rock forming minerals", American mineralogist 95 (2010) 185-187. [DOI:10.2138/am.2010.3371]
16. [16] Deer W.A., Howie R.A., Zussman J., "An introduction to the rock forming minerals", 2nd edition, Longman Scientific and Technical, London (1992).
17. [17] Foster M. D., "Interpretation of the composition of trioctahedral micas" United States Geological Survey Professional Paper, 354-B (1960) 11-46. [DOI:10.3133/pp354B]
18. [18] Deer W. A., Howie R. A., Zussman J., "Rock Forming Minerals", Volume 2B. Double-Chain Silicates. Geological Society, London, 2nd edition (1997).
19. [19] Droop G. T. R., "A general equation for estimating Fe3+ Concentration in ferromagnesian silicates and oxides from microprobe analysis, using stoichiometric criteria", Mineralogical Magazine, 51 (1987) 431-435. [DOI:10.1180/minmag.1987.051.361.10]
20. [20] Leake B.E., Woolley A.R., Arps C.E.S., Birch W.D., Gilbert M.C., Grice J.D., Hawthorne F.C., Kato A., Kisch H.J., Krivovichev V.G., Linthout K., Laird J., Mandarino J., Maresch, W.V., Nickel E.H., Rock N.M.S., Schumacher J.C., Smith D.C., Stephenson N.C.N., Ungaretti L., Whittaker E.J.W., Youzhi G., "Nomenclature of amphiboles: Report of the subcommittee on amphiboles of the International Mineralogical Association, Commission on new minerals and mineral names", Canadian Mineralogist, Vol. 35 (1997) 219-246. [DOI:10.1127/ejm/9/3/0623]
21. [21] Hodges K. V. Y., Spear, F. S., "Geothermometry, geobarometry and the Al2SiO5 triple point at Mt. Moosilauke:, New Hampshire", American Mineralogist 67 (1982) 1118-1134.
22. [22] 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 109 (1991) 130-137. [DOI:10.1007/BF00687206]
23. [23] Holdaway M. J., Lee S. M., "Fe-Mg cordierire stabiliry in high grade pelitic rocks based on experimental, theoretical and natural observations", Contribution to Mineralogy and Petrology 63 (1977) 175-198. [DOI:10.1007/BF00398778]
24. [24] Perchuk L.L., Lavrent'eva I.V., "Experimental investigation of exchange equilibria in the system cordierite-garnet-biotite. In: Saxena, S.K. (Ed.), Kinetics and Equilibrium in Mineral Reactions", Springer-Verlag, New York, (1983) 199-239. [DOI:10.1007/978-1-4612-5587-1_7]
25. [25] 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]
26. [26] Wu C., Zhang J., Ren L., Empirical garnet-biotite-plagioclase-quartz (GBPQ) geobarometry in medium to high-grade metapelites", Journal of Petrology 45 (2004) 1907-1921. [DOI:10.1093/petrology/egh038]
27. [27] Zenk M., Schulz B., "Zoned Ca-amphiboles and related P-T evolution in metabasites from the classical Barrovian metamorphic zones in Scotland", Mineralogical Magazine 68 (2004) 769-786. [DOI:10.1180/0026461046850218]

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