زمین شناسی، دگرسانی، کانی سازی، زمین شیمی، بررسی سیالات درگیر، پتروژنز و سن‌ سنجی دایک های دیوریتی محدوده مس رباعی (جنوب دامغان)

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه زمین شناسی، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران

چکیده

محدوده اکتشافی مس رباعی در کمربند ترود-چاه شیرین در فاصله 95 کیلومتری جنوب دامغان واقع‌شده است. سنگ­‌شناسی منطقه از واحدهای آتشفشانی ائوسن با ترکیب آندزیت و تراکی­‌آندزبت تشکیل‌شده که دایک­‌هایی با ترکیب دیوریتی در این واحدها نفوذ کرده است. زون­‌های دگرسانی رخنمون‌یافته در این منطقه شامل پروپیلیتیک، سریسیتی، آرژیلیک و کربناتی­‌شدن است. کانی­‌سازی به‌صورت رگه‌­ای با شیب بین 60 تا 80 درجه با روند شمال‌شرقی- جنوب‌غربی و عرض 1 تا 5 متر در امتداد شکستگی­‌ها و گسل­‌ها رخ‌داده است. کانی‌­های اولیه شامل کالکوپیریت، بورنیت و پیریت و کانی­‌های ثانویه شامل کالکوسیت، کوولیت، مالاکیت، آزوریت، گوتیت، لیمونیت و هماتیت است. مقدار مس بین 01/0 تا 6/5 درصد متغیر است و همچنین مقدار عناصر سرب، روی، نقره و طلا در منطقه، پایین است. دایک‌­های دیوریتی منطقه غنی­‌شدگی در عناصر لیتوفیل بزرگ یون و عناصر نادر خاکی سبک، و تهی­‌شدگی در عناصر نادر خاکی سنگین و عناصر با شدت میدان بالا نشان می‌­دهند.
مقدار 87Sr/86Sr، 143Nd/144Nd اولیه و ایزوتوپ­‌های اولیه εNdi بیوتیت-هورنبلند دیوریت پورفیری به‌ترتیب برابر با 705664/0،  518426/0 و 7/1- است. همه این شواهد با تشکیل‌شدن دایک‌­های دیوریتی محدوده اکتشافی مس رباعی از گوشته اولیه با ذوب‌بخشی گوه گوشته­‌ای در بالای زون فرورانش همسو است. بر اساس داده­‌های U-Pb بر روی کانی زیرکن، سن دایک‌­ها برابر با 49/0±49/50 میلیون سال مربوط به اشکوب ایپرزین (ائوسن زیرین) است. دماسنجی بر روی سیالات درگیر اولیه موجود در کانی کلسیت مرتبط با کانی‌سازی، بیانگر تشکیل این نوع کانی‌­سازی در دمای حدود 165 تا 300 درجه سانتی­‌گراد از سیالی با شوری متوسط (7 تا16  درصد وزنی معادل نمک طعام) است. مخلوط‌‌شدن سیال­‌ها با شوری­ متفاوت و در نتیجه کاهش شوری مهم‌ترین عامل در ته‌نشست مس در منطقه است. شواهد سنگ‌­شناسی، دگرسانی، شکل و حالت کانی­‌سازی، کنترل ساختاری، سیالات درگیر و ناهنجاری‌­های زمین­‌شیمیایی نشان می‌دهد که کانی­‌سازی مس رگه­‌ای محدوده اکتشافی رباعی از نوع اپی­ترمال است.

کلیدواژه‌ها


Abdollahi, A. and Fardoust, F.A., 2015. Mineralogy, Geochemistry and Forming of Robaie Cu-Fe Mines, South of Damghan. M.Sc. Thesis, Shahroud University of Technology, Shahroud, Iran, 211 pp. (in Persian)
Aguillón-Robles, A., Calmus, T., Benoit, M., Bellon, H., Maury, R.C., Cotton, J., Bourgois, J. and Michaud, F., 2001. Late Miocene adakites and Nb-enriched basalts from Vizcaino Peninsula, Mexico: indicators of East Pacific Rise subduction below southern Baja California. Geology, 29(6): 531–534.
Aldanmaz, E., Pearce, J.A., Thirlwall, M.F. and Mitchell, J.G., 2000. Petrogenetic evolution of
late Cenozoic, post-collision volcanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research, 102(1): 67–95.
Arjmandzadeh, R., Santos, J.F. and Ribeiro, S., 2013. Sr–Nd isotope geochemistry and tectonomagmatic setting of the Dehsalm Cu–Mo porphyry mineralizing intrusives from Lut Block, eastern Iran. International Journal of Earth Sciences, 103(2): 123–140.
Asiabanha, A., Bardintzeff, J.M., Kananian, A. and Rahimi G., 2012. Post-Eocene volcanics of the Abazar district, Qazvin, Iran: Mineralogical and geochemical evidence for a complex magmatic evolution. Journal of Asian Earth Sciences, 45‌(1): 79–94.
Atherton, M.P. and Petford, N., 1993. Generation of sodium-rich magmas from newly underplated basaltic crust. Nature, 362(6423): 144–146.
Badozadeh Kanrish, H., 2011, Investigation of ore mineralization Robaie-Fe Damaghan based on Petrography and Geochemistry studies. M.Sc. Thesis, Damghan University, Damghan, Iran, 211 pp. (in Persian)
Barnes, H.L., 1997. Geochemistry of Hydrothermal Ore Deposits. Wiley Interscience, New York, 978 pp.
Beane, R.E., 1983. The magmatic-meteoric transition. Geothermal Resources Council, California, Special Report 13, pp. 245–253.
Boynton, W.V., 1984. Cosmochemistry of the rare earth elements; meteorite studies. In: P. Henderson (Editor), the rare earth element geochemistry. Elsevier, Amsterdam, pp. 115–1522.
Boynton, W.V., 1985. Cosmochemistry of the rareearth elements: Meteorite studies, In Rare Earth Element Geochemistry. Elsevier, Amsterdam, 522 pp.
Chappell, B.W. and White, A.J.R., 2001. Two contrasting granite types, 25 years later.
Chappell, B.W. and White, A.J.R., 2001. Two contrasting granite types, 25 years later.
Chappell, B.W. and White, A.J.R., 2001. Two contrasting granite types, 25 years later. Australian Journal of Earth Sciences, 48(4): 489–500. Chi, G.X. and Xue, C.J., 2011. An overview of hydrodynamic studies of mineralization. Geoscience Frontiers, 2‌(3): 423–438.
Cotton, J., Le Dez, A., Bau, M., Caroff, M., Maury, R.C., Dulski, P., Fourcade, S., Bohn, M. and Brousse, R., 1995. Origin of anomalous rare earth element and yttrium enrichments in subaerially exposed basalts, evidence from French Polynesia. Chemical Geology, 119(1–4): 115–138.
Defant, M.J. and Drummond, M.S., 1990. Derivation of some modern arc magmas by melting of young subducted lithosphere. Nature, 347(6294): 662–665.
Defant, M.J., Jackson, T.E., Drummond, M.S., De Boer, J.Z., Bellon, H., Feigenson, M.D., Maury, R.C. and Stewart, R.H., 1992. The geochemistry of young volcanism throughout western Panama and southeastern Costa Rica: an overview. Journal of Geological Society, 149‌(4): 569–579.
Duggen, S., Hoernle, K., Van Den Bogaard, P. and Garbe-Schönberg, D., 2005. Post-Collisional Transition from Subduction- to Intraplate-type Magmatism in the Westernmost Mediterranean: Evidence for Continental-Edge Delamination of Subcontinental Lithosphere. Journal of Petrology, 46‌(6): 1155–1201.
Etemadi, A., Karimpour, M.H. and Malekzadeh Shafaroudi, A., 2018. Geology, petrography, alteration, mineralization and petrogenesis of intrusive bodies in the Hamech prospect area, Southwest of Birjand. Journal of Economic Geology, 10(1): 113–137. (in Persian with English abstract)
Fard, M., Rastad, E., Rashidnejad-Omran, N. and Ghaderi, M., 2001. Mineralization and potential of gold in Torud- Chahshirin volcano-plutonic complex (south Damghan). 5th Symposium of Geological Society of Iran, Tehran University, Tehran, Iran.
Fournier, R.O., 1999. Hydrothermal processes related to movement of fluid from plastic into brittle rock in the magmatic-epithermal environment. Economic Geology, 94(8): 1193–1211.
Gill, J.‌B., 1981. Orogenic Andesites and Plate Tectonics. Springer Verlag, Berlin, 390 pp.
Hou, Z.Q., Zhang, H., Pan, X. and Yang, Z., 2011. Porphyry Cu (-Mo-Au) deposits related to melting of thickened mafic lower crust: examples from the eastern Tethyan metallogenic domain. Ore Geology Reviews, 39‌(1–2): 21–45.
Houshmandzadeh, A.R., Alavi Naini, M. and Haghipour, A.A., 1978. Evolution of geological phenomenon in Torud area. Geological Survey of Iran, Tehran, Report 5H, 138 pp.
Imamjome, A., Rastad, E., Bouzari, F. and Rashidnezhad, N., 2009. An introduction to individual disseminated veinlet and vein mineralization system of Cu (Pb-Zn) in the Chah Messi and Ghole Kaftaran mining district, eastern part of the TroudChah Shirin magmatic arc. Scientific Quarterly Journal, Geosciences, 18(70): 112–125.
Katongo, C., Koller, F., Klötzli, U., Koeberl, Ch., Tembo, F. and Waele, B., 2004. Petrography, geochemistry, and geochronology of granitoid rocks in the Neoprotrozoic- Paleozoic LufilianZambezi belt, Zambia: Implications for tectonic setting and regional correlation. Journal of African Earth Sciences, 40(5): 219–244.
Kay, R.W. and Kay, S.M., 1993. Delamination and delamination magmatism. Tectonophysics, 219‌(1–3): 177–189.
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. Geochemistry, 69(3): 247–277.
Kemp, A.I.S., Hawkesworth, C.J., Foster, G.L., Paterson, B.A., Woodhead, J.D., Hergt, J.M., Gray, C.M. and Whitehouse, M.J., 2007. Magmatic and crustal differentiation history of granitic rocks from hafnium and oxygen isotopes in zircon. Journal of Science, 315(5811): 980–983.
Kesler, S.E., 2005. Ore-forming fluids. Elements, 1(1): 13–18.
Large, R.R., McGoldrick, J., Berry, R.F. and Young, C.H., 1988. A tightly folded, gold-rich, massive sulphide deposit: Que River mine, Tasmania. Economic Geology, 83(4): 681–693.
Li, J-X., Qin, K-Zh., Li, G-M., Xiao, B., Chen, L. and Zhao, J-X., 2011. Post-collisional orebearing 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.
Mehrabi, B. and Ghasemi, M.S., 2012. Intermediate sulfidation epithermal Pb-Zn-Cu (±Ag-Au) mineralization at Cheshmeh Hafez deposit, Semnan province, Iran. Journal of Geological Society of India, 80(4): 563–578.
Menzies, M.A., Long, A., Ingeram, G., Talnfi, M. and Janfcky, D., 1993. MORB preidotite–seawater interaction: experimental constrains on the behavior of trace elements. 87Sr/86Sr and 143Nd/144Nd ratios. In: H.M. Princhard, T. Alabaster, N.B.W. Harris and C.R. Neary (Editors), Magmatic Process and Plate Tectonics. Geological Society, London, pp. 309–322.  
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, S., 2010. Investigation of Gold mineralization in the Baghu area, southeast of Damghan. M.Sc. Thesis, University of Damghan, Damghan, Iran, 103 pp. (in Persian)
Muir, R.J., Weaver, S.D., Bradshaw, J.D., Eby, G.N. and Evans, J.A., 1995. The Cretaceous separation point batholith, New Zealand: granitoid magmas formed by melting of mafic lithosphere. Journal of the Geological Society, 152(4): 689–701.
Nabatian, G., Ghaderi, M., Neubauer, F., Honarmand, M., Liu, X., Dong, Y., Jiang, S., Quadt, A. and Bernroide, M., 2014. Petrogenesis of Tarom high-potassic granitoids in the Alborz-Azarbaijan belt, Iran: geochemical, U-Pb zircon and Sr-Nd-Pb isotopic constraints. Lithos, 184(187): 324–345.
Nahidifar, L., Fardost, F.A. and Rezai, M., 2014. Mineralogy, Geochemistry and Genesis of Dian Copper Deposit (South Damghan). M.Sc. Thesis, Shahroud University of Technology, Shahroud, Iran, 169 pp. (in Persian)
Niroomand, S., Hassanzadeh, J., Tajeddin, H.‌A. and Asadi, S., 2018. Hydrothermal evolution and isotope studies of the Baghu intrusion‐related gold deposit, Semnan province, north‐central Iran. Ore Geology Reviews, 95: 1028–1048.
Nogol Sadat, M. and Alavi, A., 1993. Geological map of moalleman, scale 1: 100000. Geological Survey of Iran.
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, United Kingdom, pp. 230–249.
 Pearce, J.A., Harris, N.B.W. and Tindle, A.G., 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology, 25‌(4): 956–983.
Petford, N. and Atherton, A., 1996. Na-rich partial melts from newly underplated basaltic crust: the Cordillera Blanca batholith, Peru. Journal of Petrology, 37(6): 1491–1521.
Ramboze, C., pichavant, M. and Weisbrod, A., 1982. Fluid immiscibility in natural processes: use and misuse of fluid data. II. Interpretation of fluid inclusion data in terms of immiscibility. Chemical Geology, 37(1–2): 29–48.
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.
Robb, L., 2004. Hydrotermal processes. In: L. Robb (Editor), Introduction to Ore forming processes. Wiley, New York, pp. 125–215.
Rohbakhsh, P., Karimpour, M.H. and Malekzadeh Shafaroudi, A., 2018. Geology, mineralization, geochemistry and petrology of intrusive bodies In Kuh-Zar CU-Au deposit, Damghan. Journal of Economic Geology, 10(1): 1–23. (in Persian with English abstract)
Rollinson, H., 1993. Using geochemical data: evaluation, presentation, interpretation. Longman Singapore Publishers, England, 352 pp.
Sajona, F.G., Naury, R.C., Pubellier, M., Leterrier, J., Bellon, H. and Cotton, J., 2000. Magmatic source enrichment by slab-derived melts in a young post-collision setting, central Mindanao (Philippines). Lithos, 54(3): 173–206.
Shamanian, G.H., Hedenquist, J.W., Hattori, K.H. and Hassanzadeh, J., 2004. The Gandy and Abolhassani Epithermal Prospects in the Alborz Magmatic Arc, Semnan Province, Northern Iran. Economic Geology, 99(4): 691–712.
Shaw, D.M., 1970. Trace element fractionation during anataxis. Geochimica et Cosmochimica Acta, 34(2): 237–243.
Shepherd, T.J., Rankin, A.H. and Alderton, D.H.M., 1985. A Practical Guide to Fluid Inclusion Studies. Blackie Academic and Professional, glasgow, 239 pp.
Shiri, Z., 2013. Geology, Mineralogy, Geochemistry and Genesis of Anaru Zinc (Lead), south of Damghan. M.Sc. Theses, Damghan University, Damghan, Iran, 150 pp. (in Persian)
Siemens, H., 2003, Texture, microstructure and strength of hematite ore, experimentally deformed in the temoerature range 600o-1100oC and at strain rates between 10-4-10-6 s-1. Journal of Structural Geology, 25(9): 1371–1391.
Steele-MacInnis, M., Lecumberri-Sanchez, P. and Bodnar, R.J., 2012. HOCKIEFLINCS-H2O-NACL: A Microsoft Excel spreadsheet for interpreting microthermometric data from fluid inclusions based on the PVTX properties of H2O-NaCl. Computers and Geosciences, 49: 334–337.
Sun, S.S. and McDonough, W.F., 1989. Chemical and isotopic systematic of oceanic basalts: implications for mantle composition and processes. In: A.D. Saunders and M.J. Norry (Editors), Magmatism in the Ocean Basins. Geological Society of London Special Publication, London, pp. 313–345.
Taghipour, N., 2016. Final report of the Robaie copper exploration. Geological Survey of Iran, Semnan, Final report, 110 pp.
Tatsumi, Y. and Takahashi, T., 2006. Operation of subduction factory and production of andesite. Journal of Mineralogical and Petrological Sciences, 101(1): 145–153.
Tepper, J.H., Nelson, B.K., Bergantz, G.W. and Irving, A.J., 1993. Petrology of the Chilliwack
batholith, North Cascades, Washington: generation of calc-alkalinegranitoids by melting of mafic lower crust with variable water fugacity. Contributions to Mineralogy and Petrology, 113(3): 333–351.
Whitney, D.L. and Evans, B., 2010. Abbreviations for names of rock-forming minerals. American Mineralogist, 95(1): 185–187.
Wilson, M., 1989. Igneous Petrogenesis. Chapman and Hall, London, 466 pp.
Wilkinson, J.J., 2001. Fluid inclusion in hydrothermal ore deposits. Lithos, 55 (1–4): 229–272.
Yang, J.H., Wu, F.Y., Wilde, S.A., Xie, L.W., Yang, Y.H. and Liu, X.M., 2007. Tracing magma mixing in granite genesis, in situ U-Pb dating and Hf-isotope analysis of zircons. Contribution to Mineralogy and Petrology, 153(2): 177–190.
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.
Zindler, A., Hart, S., 1986. Chemical geodynamics. Annual Review of Earth and Planetary Science 14: 493–571.
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