‌زمین دما- فشارسنجی و خاستگاه گابروهای منطقه جغین جنوب شرقی شهرستان رودان، استان هرمزگان

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه هرمزگان

چکیده

سنگ­های افیولیتی جغین، در شرق استان هرمزگان و جنوب شرقی شهرستان رودان در راستای پهنه مکران واقع هستند. در بررسی­های سنگ­شناسی این منطقه، توده­های فرابازی چون دونیت و هارزبورژیت و توده­های بازی شامل گابرونوریت و بازالت شناسایی شده­اند. بر اساس بررسی شیمی کانی­ها، ترکیب پیروکسن­های سنگ­های­ بازی (گابرونوریت) منطقه بیشتر از نوع آهن و منیزیوم­دار و فقیر ازسدیم بوده،که شامل کلینوپیروکسن با ترکیب دیوپسیدی و گاهی نیز اوژیت است و همچنین ارتوپیروکسن­ها بیشتر با ترکیب برونزیتی هستند. کانی­­های پلاژیوکلاز موجود در سنگ­های گابرونوریتی نیز به دونوع با سدیم بالا و کلسیم متوسط تقسیم می­شوند که بیشتر ترکیبی بین آلبیت تا بیتونیت دارند. با توجه به دماسنجی این توده­ها و استفاده از روش دو پیروکسن دمای تشکیل این توده­ها حدود 800-1200 درجه سانتی­گراد تعیین گردید و همچنین در این بین با استفاده از روش فشارسنجی توزیع آلومنیوم در پیروکسن­ها فشار حاکم بر تشکیل کلینوپیروکسن­ها نیز حدود 6-12 کیلوبار برآورد می­شود.    

کلیدواژه‌ها

عنوان مقاله [English]

Geothermobarometry and pryrogenesise of Jaghin Gabbro in southeast of Rudan city, Hormozgan Province

نویسندگان [English]

  • gholamreza Ghadami
  • Habib Ebadi
  • jaber Jamal poor
Hormozgan University
چکیده [English]

Jaghin ophiolite rocks are located in the east of Hormozgan Province and southeast of Rudan city in the ‎direction of the Makran zone. Lithologically, ultrabasic rocks such as dunite and harzburgite, and basic magma, including gabbro-norite and basalt, have been identified. According to chemical crystal analysis, the composition of pyroxenes in basic (Gabbro-norite) rocks is more than iron and magnesium, and poor of sodium, which included clinopyroxen with diopside and sometimes augite composition, as well as orthopyroxene is more than bronzite composition. Plagioclase crystals present in gabbro-norite rocks, also divide into high-sodium and medium-calcium types, which have mostly composition between albite and bitonite. Due to the thermometric of these masses and the utilize of the two-pyroxene method, the ‎temperature of forming these masses is determined to be 800-1200 °C and‎, also using the barometric of aluminum distribution in pyroxenes, the pressure on the clinopyroxenes formation estimated to be about 6-12 kbars.

کلیدواژه‌ها [English]

  • plagioclase
  • pyroxene
  • gabbro-norite
  • dunite
  • basic masses
  • Jaghin
  • Makran zone

مراجع

  1. [1] Stocklin g., "Possible ancient continental margin in Iran", In: Burk C.A., Grake C.L. (Eds.), Geology of continental margins,Springer, New York. (1974) 873-887. [DOI:10.1007/978-3-662-01141-6]
  2. [1] Stocklin g., "Possible ancient continental margin in Iran", In: Burk C.A., Grake C.L. (Eds.), Geology of continental margins,Springer, New York. (1974) 873-887. [DOI:10.1007/978-3-662-01141-6]
  3. [2] Safaii M., "Geochemistry and Geology of Fariab Hormozgan Chromite ore Deposit, MSc. Thesis, Geology", economic geology branch, Factuly of science, Shiraz University (1992).
  4. [2] Safaii M., "Geochemistry and Geology of Fariab Hormozgan Chromite ore Deposit, MSc. Thesis, Geology", economic geology branch, Factuly of science, Shiraz University (1992).
  5. [3] Etemaimoghadam M., Poormoafi M., "Petrology,Petrography and Gheochemistry study of Ultramafic Rocks Factuly of science", Shahid Behesti University (1997).
  6. [3] Etemaimoghadam M., Poormoafi M., "Petrology,Petrography and Gheochemistry study of Ultramafic Rocks Factuly of science", Shahid Behesti University (1997).
  7. [4] Najafzadeh A. R., Arvin M., Pan Y., Ahmadi pour H., "Podiform chromitites in the Sorkhband ultramafic complex, Southern Iran: evidence for ophiolitic chromitite", Journal of Sciences, Islamic Republic of Iran 19, 49-65.
  8. [4] Najafzadeh A. R., Arvin M., Pan Y., Ahmadi pour H., "Podiform chromitites in the Sorkhband ultramafic complex, Southern Iran: evidence for ophiolitic chromitite", Journal of Sciences, Islamic Republic of Iran 19, 49-65.
  9. [5] Salehi S., "Petrography and geochemistry of Mt.Groom ulterabasic of Rudan, MSc. Thesis" , Geology of Hormozgan University. (2015) P.166
  10. [5] Salehi S., "Petrography and geochemistry of Mt.Groom ulterabasic of Rudan, MSc. Thesis" , Geology of Hormozgan University. (2015) P.166
  11. [6] Mc Call, G. g. H., Morgan K. H., Huber H., "Geological Quadrangle Map of Minab", 1: 250,000 Series, Sheet J 13, Geological Survey of Iran, Tehran (1983).
  12. [6] Mc Call, G. g. H., Morgan K. H., Huber H., "Geological Quadrangle Map of Minab", 1: 250,000 Series, Sheet J 13, Geological Survey of Iran, Tehran (1983).
  13. [7] Sakauyama M., "petrological study of myoko and kurohime volcanoes", japan: crystallization sequence and evidence for magma mixing j. petro l.22 (1981) 553-583
  14. [7] Sakauyama M., "petrological study of myoko and kurohime volcanoes", japan: crystallization sequence and evidence for magma mixing j. petro l.22 (1981) 553-583
  15. [8] Kuno H., "origin of Cenozoic petrographic provinces in japan and surrounding area", Bull Volcanol. (1959) 29:20:37-76 [DOI:10.1007/BF02596571]
  16. [8] Kuno H., "origin of Cenozoic petrographic provinces in japan and surrounding area", Bull Volcanol. (1959) 29:20:37-76 [DOI:10.1007/BF02596571]
  17. [9] Donna L., Whitney Bernard W., Evans, "Abbreviations for names of rock-forming minerals", American ‎Mineralogist, 95.1 (2010), 185–87.
  18. [9] Donna L., Whitney Bernard W., Evans, "Abbreviations for names of rock-forming minerals", American ‎Mineralogist, 95.1 (2010), 185–87.
  19. [10] Morimoto N., "Nomenclature of pyroxenes Subcommittee on Pyroxenes Commission on New Minerals and Mineral Names, American Mineralogist", Volume 73, (1988) pages 1123-1133.
  20. [10] Morimoto N., "Nomenclature of pyroxenes Subcommittee on Pyroxenes Commission on New Minerals and Mineral Names, American Mineralogist", Volume 73, (1988) pages 1123-1133.
  21. [11] Morimoto N., Fabries J., Ferguson A. K., Ginsburg I. V., Ross M., Seifert F. A., Zussman J., Aoki K., Gottardi G., ''Nomenclature of pyroxenes'', American Mineralogist 65 (1988) 1-28.
  22. [11] Morimoto N., Fabries J., Ferguson A. K., Ginsburg I. V., Ross M., Seifert F. A., Zussman J., Aoki K., Gottardi G., ''Nomenclature of pyroxenes'', American Mineralogist 65 (1988) 1-28.
  23. [12] Rock N. M. S., "The International Mineralogical Association (IMA/CNMMN) pyroxene nomenclature scheme: computerization and its consequences", Mineralogy and Petrology, 43, (1990) 99-119. [DOI:10.1007/BF01164304]
  24. [12] Rock N. M. S., "The International Mineralogical Association (IMA/CNMMN) pyroxene nomenclature scheme: computerization and its consequences", Mineralogy and Petrology, 43, (1990) 99-119. [DOI:10.1007/BF01164304]
  25. [13] Soesoo A., "A multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallization PTestimations", Geological Society of Sweden (Geologiska Föreningen) 119 (1997) 55-60.
  26. [13] Soesoo A., "A multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallization PTestimations", Geological Society of Sweden (Geologiska Föreningen) 119 (1997) 55-60.
  27. [14] Lindslay D. H., "Pyroxene Geothermometry", American Mineralogist, 68, (1983) 477-493.
  28. [14] Lindslay D. H., "Pyroxene Geothermometry", American Mineralogist, 68, (1983) 477-493.
  29. [15] WASS S. Y., "Multiple origins of clinopyroxenes in basaltic rocks", Lithos, 12 (1990) 115- 132.
  30. [15] WASS S. Y., "Multiple origins of clinopyroxenes in basaltic rocks", Lithos, 12 (1990) 115- 132.
  31. [16] Aoki K., Shiba I., ''Pyroxenes from lherzolite inclusions of Itinom egata, Japan'', Lithos 6 (1993) 41-51. [DOI:10.1016/0024-4937(73)90078-9]
  32. [16] Aoki K., Shiba I., ''Pyroxenes from lherzolite inclusions of Itinom egata, Japan'', Lithos 6 (1993) 41-51. [DOI:10.1016/0024-4937(73)90078-9]
  33. [17] Moein vaziri H., Ahmadi A., "Petrography and Petrology of Igneous rocks", Trabiat Modarres University.
  34. [17] Moein vaziri H., Ahmadi A., "Petrography and Petrology of Igneous rocks", Trabiat Modarres University.
  35. [18] Helz R. T., ''Phase relations of basalts in their melting range at PH20= 5 kb as a function of oxygen fugacity'', Journal of Petrology 14 (1973)249-302 [DOI:10.1093/petrology/14.2.249]
  36. [18] Helz R. T., ''Phase relations of basalts in their melting range at PH20= 5 kb as a function of oxygen fugacity'', Journal of Petrology 14 (1973)249-302 [DOI:10.1093/petrology/14.2.249]
  37. [19] Soesoo A., "A multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallization PTestimations", Geological Society of Sweden (Geologiska Föreningen) 119 (1997) 55-60.
  38. [19] Soesoo A., "A multivariate statistical analysis of clinopyroxene composition: empirical coordinates for the crystallization PTestimations", Geological Society of Sweden (Geologiska Föreningen) 119 (1997) 55-60.
  39. [20] Deer W. A., Howie R. A., Zussman J., ''An introduction to the rock forming minerals'', SecondLongman Editions, Longman, London (1992) 696.
  40. [20] Deer W. A., Howie R. A., Zussman J., ''An introduction to the rock forming minerals'', SecondLongman Editions, Longman, London (1992) 696.
  41. [21] Anderson J. L., "Statuse of thermo-barometry in granitic batholiths", Earth Science Review 87 (1996) 125-138.
  42. [21] Anderson J. L., "Statuse of thermo-barometry in granitic batholiths", Earth Science Review 87 (1996) 125-138.
  43. [22] Koroll H., Evangelakakkis C., Voll G., "Two feldspar Geothermometry: a review and revision for slowly cooled rocks" Contributions to Mineralogy and Petrology (1993) 510–518. [DOI:10.1007/BF00321755]
  44. [22] Koroll H., Evangelakakkis C., Voll G., "Two feldspar Geothermometry: a review and revision for slowly cooled rocks" Contributions to Mineralogy and Petrology (1993) 510–518. [DOI:10.1007/BF00321755]
  45. [23] Abbasi Dehghim S., Tabatabbaei manesh M., Irannezhadi M., "Mineralogy, geothermobarometry and determination of plutonic magmatic series east of Nabar (SW of Kashan)", Iranian Journal of Crystalography and Minarology, (2015) 23 Vol.1
  46. [23] Abbasi Dehghim S., Tabatabbaei manesh M., Irannezhadi M., "Mineralogy, geothermobarometry and determination of plutonic magmatic series east of Nabar (SW of Kashan)", Iranian Journal of Crystalography and Minarology, (2015) 23 Vol.1
  47. [24] NISBET E.G., PEARCE J.A. "Clinopyroxene composition in mafic lavas from different tectonic settings", Contrib.Mineral. Petrol. 63 (1977) 149-160 [DOI:10.1007/BF00398776]
  48. [24] NISBET E.G., PEARCE J.A. "Clinopyroxene composition in mafic lavas from different tectonic settings", Contrib.Mineral. Petrol. 63 (1977) 149-160 [DOI:10.1007/BF00398776]
  49. [25] LeBas M. J., "The role of aluminium in igneous clinopyroxenes with relation to their percentage", Am. J. Sci. 260 (1962) 267.88.
  50. [25] LeBas M. J., "The role of aluminium in igneous clinopyroxenes with relation to their percentage", Am. J. Sci. 260 (1962) 267.88.
  51. [26] Kananian et. al, "Petrography, mineral chemistry and genesis of Aland and Gheshlagh Chromite deposits, Khoy ophiolite (NW of Iran)", Iranian Journal of Crystalography and Minarology, Y 23 Vol.3, P.372-382
  52. [26] Kananian et. al, "Petrography, mineral chemistry and genesis of Aland and Gheshlagh Chromite deposits, Khoy ophiolite (NW of Iran)", Iranian Journal of Crystalography and Minarology, Y 23 Vol.3, P.372-382
  53. [27] Yousef zadeh M., Sabzei M., "Geothermobarometery of Markouh Dacite (NE Birjand) and its Amphibolitic Xenoliths", Y.25 Vol.1 (2012) P.43-52
  54. [27] Yousef zadeh M., Sabzei M., "Geothermobarometery of Markouh Dacite (NE Birjand) and its Amphibolitic Xenoliths", Y.25 Vol.1 (2012) P.43-52
  55. [28] Salavati M., et al, "Mineral chemistry of ultramafic rocks from the Southern Caspian Sea Ophiolite (Eastern Guilan)", evidence for a high-pressure crystal fractionation. Y.25 Vol.2 (2009) P.149-166
  56. [28] Salavati M., et al, "Mineral chemistry of ultramafic rocks from the Southern Caspian Sea Ophiolite (Eastern Guilan)", evidence for a high-pressure crystal fractionation. Y.25 Vol.2 (2009) P.149-166
  57. [29] Poosti M., Ghadami GH., Salehi S., "Mineralogy and petrogenesis of chromian – spinel in Rudan ultramafic body", Hormozgan Province Y.25 Vol.1 (2017) P.187-198.
  58. [29] Poosti M., Ghadami GH., Salehi S., "Mineralogy and petrogenesis of chromian – spinel in Rudan ultramafic body", Hormozgan Province Y.25 Vol.1 (2017) P.187-198.

فایل ها

سابقه مقاله

  • تاریخ دریافت: 15 مهر 1396
  • تاریخ بازنگری: 07 بهمن 1396
  • تاریخ پذیرش: 16 اسفند 1396

هم رسانی

ارجاع به این مقاله

آمار