پتروژنز و سن‌ سنجی زیرکن-اورانیم- سرب سنگهای دیوریتی پیروکسن‌ دار اسکارنی شده منطقه بیشه (جنوب بیرجند- شرق ایران)

زمین شناسی اقتصادی

مقاله 7، دوره 6، شماره 2 - شماره پیاپی 11، دی 1393، صفحه 393-409   

نوع مقاله: علمی- پژوهشی

شناسه دیجیتال (DOI): 10.22067/econg.v6i2.31772

نویسندگان

ملیحه نخعی^{* 1}؛ سید احمد مظاهری¹؛ محمد حسن کریم پور¹؛ جی لنگ فارمر²؛ چارلز استرن²؛ محمد حسین زرین کوب³؛ محمد رضا حیدریان شهری¹

¹فردوسی مشهد

²کلرادو

³بیرجند

چکیده

در منطقه بیشه واقع در شرق بلوک لوت، هورنبلند دیوریت های پورفیری در سنگهای رسوبی و آذرین (توف‌ها و سنگهای دیوریتی پیروکسن‌دار) نفوذ کرده و به‌ترتیب تشکیل اگزواسکارن و اندواسکارن داده است. بخشهای تغییر نیافته سنگهای دیوریتی پیروکسن‌دار، دارای ماهیت کالک آلکالن پتاسیم بالا و متاآلومین (78/1 A/NK≥ و 95/0(A/CNK≤ هستند. نمودار چند عنصری به‌هنجار شده با گوشته اولیه نشان دهنده غنی شدگی از عناصر LIL مانند Rb، Ba، Cs و تهی شدگی از عناصر HFS نظیر Nb، P، Ti، Y و Yb است. نمودار عناصر نادر خاکی بیانگر مقادیر (La/Yb)N از 75/7 تا 63/8 و بی هنجاری منفی ضعیف Eu می باشد. این خصوصیات به همراه مقادیر بالای Th/Yb و Ta/Yb نشان‌دهنده ماگماتیسم وابسته به مناطق فرورانش حاشیه قاره هاست. تهی‌شدگی مشخص Nb و Ti ، میزان نسبتاً بالای Mg#، نسبتهای اولیه 87Sr/86Sr ( 70606/0)، 143Nd/144Nd ( 512424/0) و Nd ε (05/3-) نشان می دهد که ماگمای سازنده سنگهای مورد مطالعه از گوشته غنی شده منشأ گرفته و دچار آغشتگی پوسته ای شده است. مقادیر بالای Rb، Th، K و مقدار پایین P و Ti در سنگهای مورد بررسی مؤید آلودگی ماگما در پوسته فوقانی طی تکامل ماگما است. میزان Ba/Rb پایین (4/7-6/4) و Rb/Sr بالا (22/0-17/0)، نشاندهنده حضور فلوگوپیت در گوشته منشأ است. با توجه به میزان بالای CaO+ Al2O3 نمونه های مورد مطالعه (متوسط 3/22 درصد)، میتوان گارنت پیروکسنیت فلوگوپیتدار را به‌عنوان منشأ ماگما در نظر گرفت. سن‌سنجی به روش زیرکن-اورانیم-سرب بر روی پیروکسن دیوریت پورفیری نشان می‌دهد که این ماگماتیسم در 07/44 میلیون سال پیش یعنی در ائوسن میانی(Lutetian) رخ داده است.

کلیدواژه‌ها

لوت؛ بیشه؛ Rb-Sr؛ Sm-Nd؛ سن‌ سنجی زیرکن-اورانیم- سرب؛ هورنبلند دیوریت پورفیری

مراجع

Ahmadi Khalaji, A., Esmaeily, D., Valizadeh, M.V. and Rahimpour-Bonab, H., 2007. Petrology and geochemistry of the granitoid complex of Boroujerd, Sanandaj-Sirjan Zone, Western Iran. Journal of Asian Earth Sciences, 29(5-6): 859–877.

Alavi, M., 1991.Tectonic map of the Middle East, scale 1:2500 000. Geological Survey of Iran, Tehran.

Arjmandzadeh, R., Karimpour, M.H., Mazaheri, S.A., Santos, J.F., Medina, J.M. and Homam, S.M., 2011. Sr–Nd isotope geochemistry and petrogenesis of the Chah-Shaljami granitoids (Lut Block, Eastern Iran). Journal of Asian Earth Sciences, 41(3): 283-296.

Arsalan, M. and Aslan, Z., 2006. Mineralogy, petrography and whole-rock geochemistry of the Tertiary granitic intrusions in the Eastern Pontides, Turkey. Journal of Asian Earth Sciences, 27(2): 177-193.

Behrouzi, A. and Nazer, N. Kh., 1992. Geological Map of Basiran, scale 1:100000. Geological Survey of Iran, Tehran.

Berberian, M., 1981a. Active faulting and tectonics of Iran. American Geophysical Union, Geodynamic Series, 3: 33–69.

Berberian, M. and King, G.C., 1981b. Towards a palaeogeography and tectonics evolution of Iran. Canadian Journal of Earth Science, 18(2): 210–265.

Boynton, W.V., 1984. Geochemistry of the rare earth elements: meteorite studies. In: P.Henderson (Editor), Rare Earth Element Geochemistry. Elsevier Science Publishing Company,New York, pp. 63-114.

Brown, C.G., Thorpe, R.S. and Webb, P.C., 1984. The geochemical characteristics of granitoids in contrasting arcs and comments on magma sources. Journal of the Geological Society, 141(3): 413-426.

Chakrabarti, R., Basu, A.R., Santo, A.p., Tedesco, D. and Vaselli, O., 2009. Isotopic and geochemical evidence for a heterogeneous mantle plume origin of the Virunga volcanics, Western rift, East African Rift system. Chemical Geology, 259(3-4): 273–289.

Chappell, B.W. and White, A.J.R., 1974. Two contrasting granite types. Pacific geology, 8: 173-174.

Chappell, B.W. and White, A.J.R., 2001. Two contrasting granite types- 25 years later.Australian Journal of Earth Sciences, 48(4): 489-499.

Condie, K.C., 1989. Geochemical changes in basalts and andesites across the Archean–Proterozoic boundary: Identification and significance. Lithos, 23(1-2): 1–18.

Dong, Y. Liu, X., Zhang, G., Chen, Q., Zhang, X., Li, W. and Yang, Ch., 2012. Triassic diorites and granitoids in the Foping area: Constraints on the conversion from subduction to collision in the Qinling orogen, China. Journal of Asian Earth Sciences, 47: 123-142.

Dunphy, J.M. and Ludden, J.M., 1998. Petrological and geochemical characteristics of a Paleoproterozoic magmatic arc (Narsajuaq terrane, Ungava Orogen, Canada) and comparisons to Superior Province granitoids. Precambrian Research, 91(1): 109-142.

Erkül, S.T., Sözbìlìr, H., Erkül, F., Helvaci, C., Ersoy, Y. and Sümer, O., 2008. Geochemistry of I-type granitoids in the Karaburun Peninsula, West Turkey: Evidence for Triassic continental arc magmatism following closure of the Palaeotethys. Island arc, 17(3): 394-418.

Esmaeily, D., Nedelec, A., Valizadeh, M.V., Moore, F. and Cotton, J., 2005. Petrology of the Jurassic Shah-Kuh granite (eastern Iran), with reference to tin mineralization. Journal of Asian Earth Sciences, 25(6): 961-980.

Eyuboglu, Y., Santosh, M. and Chung, S.L., 2011. Crystal fractionation of adakitic magmas in the crust-mantle transition zone: petrology, geochemistry and U-Pb zircon chronology of the Seme adakites, Eastern Pontides, NE Turkey. Lithos, 121(1-4): 151-166.

Faure, G., 2013. Principles of Isotope Geology. John Wiley & Sons, United states of America, 589 pp.

Foley, S.F., 1993. An experimental study of olivine lamproite: first results from the diamond stability field. Geochimica et Cosmochimica Acta, 57(2): 483–489.

Furman, T. and Graham, D., 1999. Erosion of lithospheric mantle beneath the East African Rift system: geochemical evidence from the Kivu volcanic province. Lithos, 48(1-4): 237–262.

Fyfe, W. and McBirney, A., 1975. Subduction and the structure of andesite volcanic belts. American Journal of Science, 275-A: 285-297.

Geng, H.Y., Sun, M., Yuan, C., Xiao, W.J., Xian, W.S., Zhao, G.C., Zhang, L.F., Wong, K. and Wu, F.Y., 2009. Geochemical, Sr–Nd and zircon U–Pb–Hf isotopic studies of Late Carboniferous magmatism in the West Junggar, Xinjiang: implications for ridge subduction. Chemical Geology, 266(3-4): 364–389.

Green, D.H. and Falloon, T.J., 1998. Pyrolite: a Ringwood concept and its current expression. In: I.N.S. Jackson (Editor), The Earth's Mantle: Composition, Structure, and Evolution. Cambridge University Press , New York, pp. 311–380.

Haghipour, A. andAghanabati, A., 1989. Geological Map of Iran (2nd edition), scale 1:2,500,000. Geological Survey of Iran, Tehran.

Harris, N.B.W., Pearce, J.A., Tindle, A.G., 1986. Geochemical characteristics of collision-zone magmatism. In: M.P. Coward and A.C. Ries (Editors), Collision Tectonics. Special Publication, Geological Society, London, pp. 67–81.

Hirschmann, M.M. and Stolper, E.M., 1996. A possible role for garnet pyroxenite in the origin of the ‘‘garnet signature’’ in MORB. Contributions to Mineralogy and Petrology, 124(2): 185–208.

Hoskin, P.W.O. and Schaltegger, U., 2003. The Composition of Zircon and Igneous and Metamorphic Petrogenesis. In: J.M. Hunchar and P.W.O. Hoskin (Editors), Zircon, Reviews in Mineralogy and Geochemistry. Mineralogical Society of America, United states of America, 53(1): 27-62.

Jackson, J. and McKenzie, D., 1984. Active tectonics of the Alpine-Himalayan Belt between western Turkey and Pakistan. Geophysical Journal of the Royal Astronomical Society, 77(1): 185–264.

Karimpour, M.H., Khin Zaw. and Huston, D.L., 2005. S-C-O isotopes, fluid inclusion microthermometry, and the genesis of ore bearing fluids at Qaleh-Zari Fe-Oxide Cu-Au-Ag Mine, Iran. Journal of Sciences, Islamic Republic of Iran, 16(2): 153-168.

Kaygusuz, A. and Aydınçakır, E., 2009. Mineralogy, whole-rock and Sr–Nd isotope geochemistry of mafic microgranular enclaves in Cretaceous Dagbasi granitoids, Eastern Pontides, NE Turkey: Evidence of magma mixing, mingling and chemical equilibration. Chemie der Erde-Geochemistry, 69(3): 247–277.

Kogiso, T. and Hirschmann, M.M., 2001. Experimental study of clinopyroxene partial melting and the origin of ultra-calcic melt inclusions. Contributions to Mineralogy and Petrology, 142(3): 347–360.

Kuşcu, I., Kuşcu, G.G., Meinert, L.D. and Floyd, P.A., 2002. Tectonic setting and petrogenesis of the Çelebi granitoid, (Kirikkale-Turkey) and comparison with world skarn granitoids. Journal of Geochemical Exploration, 76(3): 175–194.

Li, J-X., Qin, K-Zh., Li, G-M., Xiao, B., Chen, L. and Zhao, J-X., 2011. Post-collisional ore-bearing adakitic porphyries from Gangdese porphyry copper belt, southern Tibet: Melting of thickened juvenile arc lower crust. Lithos, 126(3-4): 265–277.

Lin, I.J., Chung, S.L., Chu, C. H., Lee, H. Y., Gallet, S., Wu, G., Ji, J. and Zhang, Y., 2012. Geochemical and Sr–Nd isotopic characteristics of Cretaceous to Paleocene granitoids and volcanic rocks, SE Tibet: petrogenesis and tectonic implications. Journal of Asian Earth Sciences, 53: 131–150.

Lindenberg, H.G., Gröler, K., Jacobshagen ,V. and Ibbeken, H., 1984. Post-Paleozoic stratigraphy, structure and orogenetic evolution of the southern Sabzevar zone and the Taknar block. Neues Jahrbuch für Geologie und Paläontologie, Abhhandlungen, 168: 287–326.

Liu, S.W., Zhang, J., Li, Q.G., Zhang, L.F., Wang, W. and Yang, P.T., 2012. Geochemistry and U–Pb zircon ages of metamorphic volcanic rocks of the Paleoproterozoic Lüliang Complex and constraints on the evolution of the Trans-North China Orogen, North China Craton. Precambrian Research, 222–223: 173–190.

Middlemost, E.A.K., 1994. Naming materials in the magma/ igneous rock system. Earth Sciences Review, 37(3-4): 215–224.

Mirnejad, H., Lalonde, A.E., Obeid, M. and Hassanzadeh, J., 2013. Geochemistry and petrogenesis of Mashhad granitoids: An insight into the geodynamic history of the Paleo-Tethys in northeast of Iran., Lithos, 170–171: 105–116.

Moradi Noghondar, M., Karimpour, M.H., Farmer, G.L. and Stern, C.R., 2011-2012. Sr-Nd isotopic characteristic, U-Pb zircon geochronology, and petrogenesis of Najmabad Granodiorite batholith, Eastern Iran. Journal of Economic Geology, 3(2): 127-145. (in Persian)

Nakhaei, M., Karimpour, M.H., Mazaheri, S.A., Heydarian Shahri ,M.R. and Zarinkoub, M.H., 2012. Geochemistry of intrusive-subvolcanic bodies of Bisheh skarn and its comparison with bodies associated skarns. Third symposium of Iranian Society of Economic Geology, Shahid Chamran University of Ahvaz, Ahvaz, Iran. (in Persian)

Pang, K.N., Chung ,S.L., Zarrinkoub, M.H., Khatib, M.M., Mohammadi, S.S., Chiu, H.Y., Chu ,C.H., Lee, H.Y. and Lo, C.H., 2013. Eocene–Oligocene post-collisional magmatism in the Lut–Sistan region, eastern Iran: Magma genesis and tectonic implications. Lithos, 180-181: 234-251.

Parrish, R.R. and Noble, S.R., 2003. Zircon U-Th-Pb Geochronology by Isotope Dilution - Thermal Ionization Mass Spectrometry (ID-TIMS). In: J.M. Hunchar and P.W.O. Hoskin (Editors), Zircon, Reviews in Mineralogy and Geochemistry. Mineralogical Society of America, United states of America 53, pp. 183-213.

Pearce, J.A. and Peate, D.W., 1995.Tectonic implications of the composition of volcanic arc magmas. Annual Review of Earth and Planetary Sciences, 23: 251–285.

Pearce, J.A., 1983. Role of the sub-continental lithosphere in magma genesis at active continental margins. In: C.J. Hawkesworth and M. J. Norry (Editors), Continental basalts and mantle xenoliths. Shiva Publications, Nantwich, UK, pp. 230-249.

Peccerillo, A., Barberio, M.R., Yirgu, G., Ayalew, D., Barbieri, M. and Wu, T.W., 2003. Relationship between mafic and peralkaline felsic magmatism in continental rift settings: a petrological, geochemical and isotopic study of the Gedemsa Volcano, Central Ethiopian Rift. Journal of Petrology, 44(11): 2003–2032.

Peccerillo, A. and Taylor, S.R., 1976. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey. Contributions to Mineralogy and Petrology, 58(1): 63–81.

Rapp, R.P. and Watson, E.B., 1995. Dehydration melting of metabasalt at 8–32 kbar: Implications for continental growth and crust–mantle recycling. Journal of Petrology, 36(4): 891–931.

Reagan, M. K. and Gill, J. B., 1989. Coexisting calcalkaline and high niobium basalts from Turrialba volcano, Costa Rica: implication for residual titanates in arc magma source. Journal of Geophysical Research, 94(B4): 4619-4633.

Richards, J.p., Spell, T., Rameh, E., Razique, A. and Fletcher, T., 2012. High Sr/Y magmas reflect arc maturity, high magmatic water content, and porphyry Cu ± Mo ± Au potential:examples from the Tethyan arcs of central and eastern Iran and western Pakistan. Economic Geology, 107(2): 295–332.

Rudnick, R.L. and Gao, S., 2003. Composition of the continental crust. In: R.L. Rudnick (Editor), Treatise in Geochemistry. Elsevier-Pergamon, Amsterdam, pp. 1-64.

Schandl, E.S. and Gorton, M. P., 2002. Application of high field strength elements to discriminate tectonic setting in VMS environment. Economic Geology, 97(3): 629-642.

Schiano, P., Monzier, M., Eissen, J.P., Martin, H. and Koga, K.T., 2010. Simple mixing as the major control of the evolution of volcanic suites in the Ecuadorian Andes. Contributions to Mineralogy and Petrology, 160(2): 297–312.

Shand, S.J., 1943. Eruptive rocks . Thomas Murby & Co, London, 444 pp.

Sun, S.S. and McDonough, W.F., 1989. Chemical and isotopic systematic of ocean basalts: implications for mantle composition and process. In: A.D. Saunders and M.J. Norry (Editors), Magmatism in the Ocean Basins. Geological Society 42, London, pp. 313–345.

Tarkian, M., Lotfi, M. and Baumann, A., 1983. Tectonic, magmatism and the formation of mineral deposits in the central Lut, east Iran. Geological Survey of Iran, geodynamic project (geotraverse) in Iran, Tehran, Report 51, 519 pp.

Wang, W., Liu, Sh., Bai, X., Li, Q., Yang, P. Zhao, Y., Zhang, Sh. and Guo, R., 2013. Geochemistry and zircon U–Pb–Hf isotopes of the late Paleoproterozoic Jianping diorite–monzonite–syenite suite of the North China Craton: Implications for petrogenesis and geodynamic setting. Lithos, 162–163: 175–194.

Wang, X.L., Jiang, S.Y. and Dai, B.Z., 2010. Melting of enriched Archean subcontinental lithospheric mantle: evidence from the ca. 1760 Ma volcanic rocks of the Xiong'er Group, southern margin of the North China Craton. Precambrian Research, 182(3): 204–216.

White, W.M., 1997. Geochemistry, on-line textbook. Baltimore, MD:Johns Hopkins University Press. Available at www.geo.cornell.edu/geology/classes/Chapters/.

Whitney, D.L., Evans, B., 2010. Abbreviations for names of rock-forming minerals. American Mineralogist, 95(1): 185–187.

Wilson, M., 1989. Igneous Petrogenesis A Global Tectonic Approach. Springer, Verlage, 466 pp

Wyllie, P.J. and Sekine, T., 1982. The Formation of mantle phlogopite in subduction zone hybridization. Contributions to Mineralogy and Petrology, 79(4): 375-380.

Zhang, Zh-Y., Du, Y-S., Teng, Ch-Y., Zhang, J. and Pang, Zh-Sh., 2014. Petrogenesis, geochronology, and tectonic significance of granitoids in the Tongshan intrusion, Anhui Province, Middle–Lower Yangtze River Valley, eastern China. Journal of Asian Earth Sciences, 79(Part B): 792–809.

Zhou, M.F., Zhao,J.H., Jiang, C.Y., Gao, J.F., Wang, W. and Yang, S.H., 2009. OIB-like, heterogeneous mantle sources of Permian basaltic magmatism in the western Tarim Basin,NW China: implications for a possible Permian large igneous province. Lithos, 113(3-4): 583–594.

Zou, H.B., Reid, M.R., Liu, Y.S., Yao, Y.P., Xu, X.S. and Fan, Q.C., 2003. Constraints on the origin of historic potassic basalts from northeast China by U – Th disequilibrium data. Chemical Geology, 200: 189–201.