Geothermobarometery–mineralogical and mineral chemistry studies of Dacite and trachydacite of Masahim volcano south and east of Shahr-e-Babak north

Document Type : Original Article

Authors

Abstract

Massive of dacite and trachydacite are present around the Masahim volcanic of Shahr-e-Babak are, in Central Iran, Urumieh-Dokhtar volcano plutonic belt. Based on lithogical studies and the results of chemical analyses, they are composed of dacite and trachydacite and the main texture in these rocks are porphyry. Both contain plagioclase (albite to andesine), pyroxene (augite), mica (biotite), amphibol (tschermakite), quartz and opaque minerals, but k-feldespar is also present in the trachydacite rocks (sanidin, anorthoclase). Phenocrysts of plagioclase show disequilibrium textures such as oscillatory zoning and sieve. These minerals show variations in composition from the core to rim that may be resulted from changes in magma composition with pressure changes during the ascent of magma and variation in water pressure. The temperature obtained is about 650 to 750 °C. Mineral chemistry studies on clinopyroxenes show that they are Augite and the magma, where clinopyroxens were crystallized, contained about 10% H2O. Fe3+ values of the clinopyroxenes indicate high oxygen fugacity. Geothermal-barometric studies of clinopyroxenes show that the crystallization pressure of clinopyroxenes is about 6-10 kbar and the composition of clinopyroxenes shows temperature range of 1200-1150 ° C. These clinopyroxenes belong to the calc-alkaline orogenic series.
 

Keywords

References

  1. [1] Glennie K. W., "Cretaceous tectonic evolution of Arabia eastern plate margin of two oceanic, in Middle East models of Jurassic/Cretaceous carbonates systems", (2000) 414. [DOI:10.2110/pec.00.69.0009]
  2. [1] Glennie K. W., "Cretaceous tectonic evolution of Arabia eastern plate margin of two oceanic, in Middle East models of Jurassic/Cretaceous carbonates systems", (2000) 414. [DOI:10.2110/pec.00.69.0009]
  3. [2] Hasanzade J., "Geological and petrological study of igneous rocks in Ghamsar area" South Kashan (Central Iran), Master Thesis, University of Tehran (1978).
  4. [2] Hasanzade J., "Geological and petrological study of igneous rocks in Ghamsar area" South Kashan (Central Iran), Master Thesis, University of Tehran (1978).
  5. [3] Mahdavi M., Geological map of Bahabad, 1:100,000, Geological Survey of Iran (1377).
  6. [3] Mahdavi M., Geological map of Bahabad, 1:100,000, Geological Survey of Iran (1377).
  7. [4] Aghanbati, A., Geology of Iran, Geological Survey and Mineral Exploration Organization, (2004) 240 p.
  8. [4] Aghanbati, A., Geology of Iran, Geological Survey and Mineral Exploration Organization, (2004) 240 p.
  9. [5] Dimitrijevic M.D.و "Geology of Kerman region. Geol.",Surv. Iran, Yu/52, 334p (1973).
  10. [5] Dimitrijevic M.D.و "Geology of Kerman region. Geol.",Surv. Iran, Yu/52, 334p (1973).
  11. [6] Vynhal C.R., Mcsween H.Y., Jr., 'Hornblende chemistry in southern Appalachian granitoids Implications for aluminum hornblende thermobarometry and magmatic epidote stability', Am. Mineral. 76(1991) 176-188.
  12. [6] Vynhal C.R., Mcsween H.Y., Jr., 'Hornblende chemistry in southern Appalachian granitoids Implications for aluminum hornblende thermobarometry and magmatic epidote stability', Am. Mineral. 76(1991) 176-188.
  13. [7] Schmidt M.W., 'Amphibole composition in tonalite as a function of pressure: an experimental calibration of the Al-in hornblende barometer', Contrib Mineral Petrol 110 (1992) 304-310. [DOI:10.1007/BF00310745]
  14. [7] Schmidt M.W., 'Amphibole composition in tonalite as a function of pressure: an experimental calibration of the Al-in hornblende barometer', Contrib Mineral Petrol 110 (1992) 304-310. [DOI:10.1007/BF00310745]
  15. [8] Tatsumi Y., Melting experiments on a high magnesium andesite, Earth. Planet. Sci. Lett 84 (1981) 357-65. [DOI:10.1016/0012-821X(81)90017-0]
  16. [8] Tatsumi Y., Melting experiments on a high magnesium andesite, Earth. Planet. Sci. Lett 84 (1981) 357-65. [DOI:10.1016/0012-821X(81)90017-0]
  17. [9] Nelson S. T., Montana A., "Sieve textured plagioclase in voleanic rocks produced by rapid decompression", American Mineralogist 77(1992) 1242-1249.
  18. [9] Nelson S. T., Montana A., "Sieve textured plagioclase in voleanic rocks produced by rapid decompression", American Mineralogist 77(1992) 1242-1249.
  19. [10] Nelson S. T., Montana A., " Plagioclase vesoption textures as a consequamces of the rapid isothermal decompression of magmas", VCEL abstracts, New Mexico Bureau of Mines and Mineral Resources. Bull. (1989) 202.
  20. [10] Nelson S. T., Montana A., " Plagioclase vesoption textures as a consequamces of the rapid isothermal decompression of magmas", VCEL abstracts, New Mexico Bureau of Mines and Mineral Resources. Bull. (1989) 202.
  21. [11] Shelly D., "Igneous and metamorphic rocks under the microscope", Chapman and Hall, (1993) 445p.
  22. [11] Shelly D., "Igneous and metamorphic rocks under the microscope", Chapman and Hall, (1993) 445p.
  23. [12] Shelly D., "plagioclase and quartz prerred orientations in in a low - grade schist : the roles of primary growth and plastic deformation",. j. Struct . Geol., (1989a) 11, 1029-37 [DOI:10.1016/0191-8141(89)90053-9]
  24. [12] Shelly D., "plagioclase and quartz prerred orientations in in a low - grade schist : the roles of primary growth and plastic deformation",. j. Struct . Geol., (1989a) 11, 1029-37 [DOI:10.1016/0191-8141(89)90053-9]
  25. [13] Koroll H., Evangelakakkis C., "Voll Two feldspar Geothermometry: a review and revision for slowly cooled rocks", Contributions to Mineralogy and Petrology (1993) 510-518. [DOI:10.1007/BF00321755]
  26. [13] Koroll H., Evangelakakkis C., "Voll Two feldspar Geothermometry: a review and revision for slowly cooled rocks", Contributions to Mineralogy and Petrology (1993) 510-518. [DOI:10.1007/BF00321755]
  27. [14] Morimoto N., Fabrise J., Ferguson A., Ginzburg I.V., Ross M., Seifert F.A., Zussman J., Akoi K., Gottardi, "Nomenclature of pyroxenes, Mineralogical Magazine", (1989) 52, 535-555. [DOI:10.1180/minmag.1988.052.367.15]
  28. [14] Morimoto N., Fabrise J., Ferguson A., Ginzburg I.V., Ross M., Seifert F.A., Zussman J., Akoi K., Gottardi, "Nomenclature of pyroxenes, Mineralogical Magazine", (1989) 52, 535-555. [DOI:10.1180/minmag.1988.052.367.15]
  29. [15] Nisbet, E. G. Pearce, J., "A Clinopyroxene composition in mafic lavas from different tectonic setting", Ibid, (1977) 63, 149-60. [DOI:10.1007/BF00398776]
  30. [15] Nisbet, E. G. Pearce, J., "A Clinopyroxene composition in mafic lavas from different tectonic setting", Ibid, (1977) 63, 149-60. [DOI:10.1007/BF00398776]
  31. [16] Le Terrier J., Maury R. C., Thonon P., Girard, D Marchal M., "Clinopyroxene composition as a method of identification of the magmatic affinities of paleo-volcanic series", Earth and Planetary Science Letters, (1982) 59, 139-54. [DOI:10.1016/0012-821X(82)90122-4]
  32. [16] Le Terrier J., Maury R. C., Thonon P., Girard, D Marchal M., "Clinopyroxene composition as a method of identification of the magmatic affinities of paleo-volcanic series", Earth and Planetary Science Letters, (1982) 59, 139-54. [DOI:10.1016/0012-821X(82)90122-4]
  33. [17] Beccaluva L., Macciotta G., Piccardo G. B., Zeda O., "Clinopyroxene composition of ophiolite basalts as petrogenetic indicator", Chemical Geology, (1989) 77(3), 165-182. [DOI:10.1016/0009-2541(89)90073-9]
  34. [17] Beccaluva L., Macciotta G., Piccardo G. B., Zeda O., "Clinopyroxene composition of ophiolite basalts as petrogenetic indicator", Chemical Geology, (1989) 77(3), 165-182. [DOI:10.1016/0009-2541(89)90073-9]
  35. [18] Kushiro I., "Si-Al relation in clinopyroxenes from igneous rocks", American Journal of Science (1960) 258: 548-554. [DOI:10.2475/ajs.258.8.548]
  36. [18] Kushiro I., "Si-Al relation in clinopyroxenes from igneous rocks", American Journal of Science (1960) 258: 548-554. [DOI:10.2475/ajs.258.8.548]
  37. [19] Le Bas M.J., "The role of aluminium in igneous clinopyroxenes with relation to their parentage", American Journal of Science (1962) 260: 267-288. [DOI:10.2475/ajs.260.4.267]
  38. [19] Le Bas M.J., "The role of aluminium in igneous clinopyroxenes with relation to their parentage", American Journal of Science (1962) 260: 267-288. [DOI:10.2475/ajs.260.4.267]
  39. [20] Sun S. S., McDonough W.F., "Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes", In: Saunders, A.D., Norry, M.J. Eds., Magmatism in Ocean Basins, Geological Society London Special Publication, London, (1989) 313-345. [DOI:10.1144/GSL.SP.1989.042.01.19]
  40. [20] Sun S. S., McDonough W.F., "Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes", In: Saunders, A.D., Norry, M.J. Eds., Magmatism in Ocean Basins, Geological Society London Special Publication, London, (1989) 313-345. [DOI:10.1144/GSL.SP.1989.042.01.19]
  41. [21] France L., Ildefonse B., Koepke J., Bech F., "A new method to estimate the oxidation state of basaltic series from microprobe analyses", Journal of Volcanology and Geothermal Research, (2010) 189(3), 340-346. [DOI:10.1016/j.jvolgeores.2009.11.023]
  42. [21] France L., Ildefonse B., Koepke J., Bech F., "A new method to estimate the oxidation state of basaltic series from microprobe analyses", Journal of Volcanology and Geothermal Research, (2010) 189(3), 340-346. [DOI:10.1016/j.jvolgeores.2009.11.023]
  43. [22] Ottonello G., Moretti R., Marini L., Vetuschi Zuccolini M., "Oxidation state of iron in silicate glasses and melts: a thermochemical model", Chemical geology, (2001) 174(1), 157-179. [DOI:10.1016/S0009-2541(00)00314-4]
  44. [22] Ottonello G., Moretti R., Marini L., Vetuschi Zuccolini M., "Oxidation state of iron in silicate glasses and melts: a thermochemical model", Chemical geology, (2001) 174(1), 157-179. [DOI:10.1016/S0009-2541(00)00314-4]
  45. [23] Moretti R. "Polymerisation, basicity, oxidation state and their role in ionic modelling of silicate melts. Annals of Geophysics geology", Edition techniq, Paris, (2005) 58 P.
  46. [23] Moretti R. "Polymerisation, basicity, oxidation state and their role in ionic modelling of silicate melts. Annals of Geophysics geology", Edition techniq, Paris, (2005) 58 P.
  47. [24] Botcharnikov R. E., Koepke J., Holtz F., McCammon C., Wilk M., "The effect of water activity on the oxidation and structural state of Fe in a ferro-basaltic melt", Geochimica et Cosmochimica Act, (2005) 69(21), 5071-5085. [DOI:10.1016/j.gca.2005.04.023]
  48. [24] Botcharnikov R. E., Koepke J., Holtz F., McCammon C., Wilk M., "The effect of water activity on the oxidation and structural state of Fe in a ferro-basaltic melt", Geochimica et Cosmochimica Act, (2005) 69(21), 5071-5085. [DOI:10.1016/j.gca.2005.04.023]
  49. [25] Schweitzer E. L., Papike J J., Bence A. E., "Statitical analysis of clinopyroxenes from deep-sea basalts", American Mineralogist, (1979) 64, 501-13.
  50. [25] Schweitzer E. L., Papike J J., Bence A. E., "Statitical analysis of clinopyroxenes from deep-sea basalts", American Mineralogist, (1979) 64, 501-13.
  51. [26] Cameron M., Papike J., "J Structural and chemical variations in pyroxenes", American Mineralogist, (1981) 66(1-2), 1-50.
  52. [26] Cameron M., Papike J., "J Structural and chemical variations in pyroxenes", American Mineralogist, (1981) 66(1-2), 1-50.
  53. [27] Helz R.T., "Phase relations of basalts in their melting ranges at pH2O=5kb as a function of oxygen fugacity", Part I. Mafic Phases, Journal of Petrology, (1973) 14, 249-302. [DOI:10.1093/petrology/14.2.249]
  54. [27] Helz R.T., "Phase relations of basalts in their melting ranges at pH2O=5kb as a function of oxygen fugacity", Part I. Mafic Phases, Journal of Petrology, (1973) 14, 249-302. [DOI:10.1093/petrology/14.2.249]
  55. [28] Lindsley D.H., "Pyroxene thermometry", American Mineralogists. (1983) 68: 477-493.
  56. [28] Lindsley D.H., "Pyroxene thermometry", American Mineralogists. (1983) 68: 477-493.
  57. [29] Thompson R. N., "Some high-pressure pyroxenes", Mineral0gical Magazine. (1974) 39: 768-787. [DOI:10.1180/minmag.1974.039.307.04]
  58. [29] Thompson R. N., "Some high-pressure pyroxenes", Mineral0gical Magazine. (1974) 39: 768-787. [DOI:10.1180/minmag.1974.039.307.04]
  59. [30] Aoki K., I. Shiba., "Pyroxenes from lherzolite inclusions of Itinome-gata Japan", Lithos, (1973) 6: 41-51 [DOI:10.1016/0024-4937(73)90078-9]
  60. [30] Aoki K., I. Shiba., "Pyroxenes from lherzolite inclusions of Itinome-gata Japan", Lithos, (1973) 6: 41-51 [DOI:10.1016/0024-4937(73)90078-9]
  61. [31] Soesoo A. A., "Multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallisation PT-estimations", Geological Society of Sweden (Geologiska Foreningen) (1997) 119: 55-60. [DOI:10.1080/11035899709546454]
  62. [31] Soesoo A. A., "Multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallisation PT-estimations", Geological Society of Sweden (Geologiska Foreningen) (1997) 119: 55-60. [DOI:10.1080/11035899709546454]
  63. [32] Leak B. E., Woolley A. R., Birch W. C., Gilbert M. C., Grice J. D., Hawthone F. C., Kato A., Kish H. J., Krivovicher V. G., Linthout K., Laird J., Mandario J., "Nomenclature of amphiboles", Report of the subcommitte on amphiboles of International Mineralogical Assocciation (1997) 295-321.
  64. [32] Leak B. E., Woolley A. R., Birch W. C., Gilbert M. C., Grice J. D., Hawthone F. C., Kato A., Kish H. J., Krivovicher V. G., Linthout K., Laird J., Mandario J., "Nomenclature of amphiboles", Report of the subcommitte on amphiboles of International Mineralogical Assocciation (1997) 295-321.
  65. [33] Deer W. A., Howie R. A., Zussman J., "An Introduction to the Rock Forming Minerals" 2nd ed., Longman, London (1992) 696.
  66. [33] Deer W. A., Howie R. A., Zussman J., "An Introduction to the Rock Forming Minerals" 2nd ed., Longman, London (1992) 696.
  67. [34] Morimoto N., Fabrise J., Ferguson A., Ginzburg I.V., Ross M., Seifert F.A., Zussman J., Akoi K., Gottardi, "Nomenclature of pyroxenes, Mineralogical Magazine, (1989) 52, 535-555. [DOI:10.1180/minmag.1988.052.367.15]
  68. [34] Morimoto N., Fabrise J., Ferguson A., Ginzburg I.V., Ross M., Seifert F.A., Zussman J., Akoi K., Gottardi, "Nomenclature of pyroxenes, Mineralogical Magazine, (1989) 52, 535-555. [DOI:10.1180/minmag.1988.052.367.15]
  69. [35] Speer J. A., "Mica in igneous rocks", In: Micas, Bailey S. W. (ed; Mineralogical Society of American Review in Mineralogy 13 (1984) 299-356. [DOI:10.1515/9781501508820-013]
  70. [35] Speer J. A., "Mica in igneous rocks", In: Micas, Bailey S. W. (ed; Mineralogical Society of American Review in Mineralogy 13 (1984) 299-356. [DOI:10.1515/9781501508820-013]
  71. [36] Forster M. D., "Interpretation of the composition of tri octahedral mica. United State Geological Survey", Professional Paper (1960) 354-B: 1-48.
  72. [36] Forster M. D., "Interpretation of the composition of tri octahedral mica. United State Geological Survey", Professional Paper (1960) 354-B: 1-48.
  73. [37] Nachit H., Ibhi A., Abia E. H., Ohoud M. B., "Discrimination between primary magmatic biotites, reequilibrated biotites and neoformed biotites", Comptes Rendus Geoscience(2005) 337 1415-1420. [DOI:10.1016/j.crte.2005.09.002]
  74. [37] Nachit H., Ibhi A., Abia E. H., Ohoud M. B., "Discrimination between primary magmatic biotites, reequilibrated biotites and neoformed biotites", Comptes Rendus Geoscience(2005) 337 1415-1420. [DOI:10.1016/j.crte.2005.09.002]
  75. [38] Adbel-Rahman A., "Nature of biotites from alkalin, calc-alkaline and peraluminous magmas", Journal of Petrology (1994) 35: 525-541. [DOI:10.1093/petrology/35.2.525]
  76. [38] Adbel-Rahman A., "Nature of biotites from alkalin, calc-alkaline and peraluminous magmas", Journal of Petrology (1994) 35: 525-541. [DOI:10.1093/petrology/35.2.525]
  77. [39] Moradian Shahrbabaky A., "Geochemistry, Geochronology and petrography of Feldspathoid Bearing Rocks in Urumieh-Dokhtar Volcanic Belt", Iran Unpublished Ph. D thesis, University of Wollongong, Australia, (1997) 412pp.
  78. [39] Moradian Shahrbabaky A., "Geochemistry, Geochronology and petrography of Feldspathoid Bearing Rocks in Urumieh-Dokhtar Volcanic Belt", Iran Unpublished Ph. D thesis, University of Wollongong, Australia, (1997) 412pp.
Iranian Journal of Crystallography and Mineralogy
Volume 30, Issue 4 - Serial Number 88
December 2022
Pages 727-742

Files

History

  • Receive Date: 06 April 2022
  • Revise Date: 17 June 2022
  • Accept Date: 06 July 2022

Share

How to cite

Statistics