پتروگرافی و ژئوشیمی ماسه‌سنگ‌های سازند سرخ بالایی در برش منطقه حسن‌آباد (جنوب‌غرب تهران)

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه خوارزمی، دانشکده علوم زمین، گروه زمین شناسی

چکیده

تلفیق مطالعات پتروگرافی و داده­های ژئوشیمیایی سنگ­های رسوبی می­تواند ماهیت ناحیه منشاء، موقعیت تکتونیکی حوضه­های رسوبی و شرایط اقلیم قدیمه را آشکار نماید. با این هدف سازند آواری سرخ بالایی به سن الیگوسن با رخنمونی به ضخامت 220 متر در منطقه جنوب حسن­آباد تهران مورد مطالعه قرار گرفت. با استفاده از مطالعه مقاطع نازک، دانه‌ شماری و آنالیز ژئوشیمیایی عناصر اصلی و فرعی به بررسی دقیق این توالی پرداخته شد. برش مورد مطالعه از توالی مارن‌های با رنگ روشن و ماسه‌سنگ‌های لیت‌آرنایتی تشکیل شده است. شواهد دانه‌شماری ولکانیک‌‌لیت‌آرنایت بودن اغلب این ماسه‌سنگ‌ها را تثبیت کرد. بر اساس نتایج حاصل از تفسیر داده‌های ژئوشیمیایی، سنگ منشا فلسیک تا حدواسط با ترکیب مشابه پوسته قاره‌ای، در چرخه اول رسوب­گذاری با جایگاه زمین­ساختی حواشی فعال قاره­ای، دارای با توپوگرافی مرتفع و اقلیم گرم و خشک برای این ماسه‌سنگ‌ها پیشنهاد می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Petrography and Geochemistry of Sandstone of Upper Red Formation in Hasan-Abad area-SW Tehran

نویسندگان [English]

  • Khalil Rezaei
  • Sh Forooghi
  • Ahmad Asadi
چکیده [English]

The combination of petrography and geochemistry data of sedimentary rocks can reveal the nature of source regions, the tectonic setting of sedimentary basins, and paleo-climate conditions. With this goal, the Oligocene Upper Red Formation clastic rocks with a thickness of 220 m outcrop in the southern region of Hasan Abad- Tehran were studied. Using thin sections and point counting of minerals and components and geochemical analysis of major and minor elements, the sequence were carefully investigated. This section is composed of repeating sequence of bright color Marl and Litharenite sandstone. Grain counts and geochemical evidence proved that most of these sandstones are volcanic-arenite. Maturity and sedimentary cycle index of these rock is equal to 1.722, which indicates the formation of deposits in the first cycle of sedimentation in active tectonic setting with relatively low maturity. Also, based on the results of the interpretation of geochemical data, felsic to intermediate source rock with a composition similar to continental crust is suggested for sandstone.

کلیدواژه‌ها [English]

  • Upper Red Formation
  • Geochemistry
  • Sandstone
  • Petrography
  • Hasan Abad
منابع
[1]   آقانـباتی، ع (1383) زمـین­شناسی ایران، سـازمـان زمین­شناسی و اکتشافات معدنی کشور، ص 586.
[2]   عباسی، ن امینی، ع (1387) اثرشناسی ردپای پستانداران میوسن در سازند سرخ بالایی، برش ایوانکی، خاور تهران، مجله علوم زمین، شماره 37، ص 54-67.
[3]   قبادی، م.ح.، رفیعی، ب.، حیدری، م.، موسوی، س.، اسفندیاری، س (1393) ژئوشیمی و خاستگاه ماسه‌سنگ‌های سازند آغاجاری در استان خوزستان، مجله رسوب‌شناسی کاربردی، جلد 3، ص 48-61.
[4]  Amini, A (1997) Provenance and Depositional Environment of the Upper Red Formation, Central Zone Iran. Ph.D. thesis, Manchester University, 320 p.
[5]  Argast ,S., Donnelly, T.W (1987) The chemical discrimination of clastic sedimentary components. J Sediment Geol, 1987;57: 813-23.
[6]  Armstrong-Altrin, J.S, Lee, Y.I., Verma, S.P., Ramasamy, S (2004) Geochemistry of sandstones from the Upper Miocene Kudankulam Formation, southern India: Implications for provenance, weathering, and tectonic setting. Journal of Sedimentary Research. 74, 285-297.
[7]  Armstrong-Altrin, J.S., Surendra P.V (2005) Critical evaluation of six tectonic setting discrimination diagrams using geochemical data of Neogene sediments from Knowen tectonic settings.Sedimentary geology 177: 115-129.
[8]  Bahlburg, H (1998) The geochemistry and provenance  of Ordivician Turbidites in the Argentine Puna. In: Panhhurst RJ, Rapela CW, editors. The proto-andean margin  of Gondwana. Geol Soc London, Spec Paper, Vol.  142: 127-42.
[9]  Bhatia, M.R (1983) Plate tectonic and geochemicalcomposition of sandstones.J Geol; 91: 611-27.
[10]   Bhatia, M.R., Crook, K.A.W (1986) Trace elemen characteristics of graywackes and tectonic discrimination of sedimentary basins: Contrib. Mineral. Petrol., v. 92: 181-193.
[11]   Bhatt, M.I., Ghosh, S.K (2001) Geochemistry of 2.51Ga old Rampur Group pelites, western Himalayas: Implications from their provenance and weathering, Precambrian Research, 108: 1-16.
[12]   Blatt, H., Middleton, G., Murray, R (1980) Origin of Sedimentary Rocks [M], 2nd edition, Prentice-Hall, New Jersey: 782 p.
[13]   Crook, K.A.W (1974) Lithogenesis and geotectonics: The significance of compositional variation in flysch arenites (greywackes) [J]. Society of Economical, Paleontological and Mineralogical Special Publications. 19: 304-310.
[14]   Cullers, R.L., Podkovyrov, V.M (2000) Geochemistry of the Mesoproterozoic Lakhanda shales in southeastern Yakutia, Russia: Implications for mineralogical and provenanace, and recycling, Precambrian Research, 104: 77-93.
[15]   Diskin, S., Evans, J., Fowler, M.B., Guion, P.D (2011) Recognizing Different Sediment Provenance wihtin a Passive margin setting: towards characterising a sediment Source to the west of the British late Carboniferous sedimentary basins, Chemical Geology 283: 143-160.
[16]   Dozy, J. J (1955) A sketch of post-Cretaceous volcanism in central Iran. Leid. Geol. Med., 20: 48-57.
[17]   Eriksson, L.H., Eriksson, P.G., Condie, K.C., Tirsgaard, H., Muellwe, W.U., Altermann, W., Miall, A., Daspler, L.B (1998) Precambrian clastic sedimentation systems, Sedimentary Geology 120: 5-53.
[18]   Folk, R.L (1980) Petrography of sedimentary rocks. Hemphill Publishing Company: 182 p.
[19]   Grantham, J.H., Velbel, M.A (1988) The influence of climate and topography on rock fragment abundance in modern fluvial sands of the southern Blue Ridge Mountains, North Carolina. Journal of Sedimentary Petrology. 58: 219-227.
[20]   Gansser, A (1955) New aspects of the geology in central Iran. Fourth World Petroleum Congress, section I/A/5. Reprint 2: 280-300.
[21]   Hayashi, K., Fujisawa, H., Holland, H.D., Ohmoto, H (1997) Geochemistry of 1.9 Ga sedimentary rocks from northeastern Labrador, Canada [J]. Geochimica et Cosmochimica Acta. 61: 4115-4137.
[22]   Herron, M.M (1988) Geochemical classification of terrigeneous sands and shales from core or log data [J]. Journal of Sedimentary Petrology. 58: 820-829.
[23]   Ingersoll, R.V., Bullard, T.F., Ford, R.L., Grimm, J.P., Pickle, J.D., Sares, S.W (1984) The effect of grain size on detrital modes: A test of the Gazzi-Dickinso poin - conting method. Journal of Sedimentary Petrology, 54: 103-116.
[24]   Lahtinen, R (2000) Archaean–Proterozoic transition: geochemistry, provenance and tectonic setting of metasedimentary rocks in central Fennoscandian Shield. Finland. Precambrian Research 104(3-4): 147-174.
[25]   Loftus, W (1855) On geology of portions of the Turco-Persian frontier and of the districts adjoining. Q. J. Soc. Lond. 11(1): 247-245.
[26]   McLennan, S.M., Hemming, S., McDaniel, D.K., Hanson, G.N (1993) Geochemical approaches to sedimentation, provenance, and tectonics. In: Johnsson MJ, Basu A, editors. Processes controlling the composition of clastic sediments. Geol Soc Am Spec Pap, vol. 284: 21-40.
[27]   Mclennan, S.M., Taylor, S.R., McCulloch, M.T., Maynard, J.B (1990) Geochemicaland Nd-Sr Isotopic composition of deep-sea turbidites: crustal evolution and plate tectonic associations. Geochim cosmochim Acta; 54: 2015-50.
[28]   Miall, A.D (1994) Reservoir heterogeneities in fluvial sandstones: lessons from outcrop studies. American Association of PetroleumGeologists Bulletin. 72: 682-697.
[29]   Miall, A.D (2006) The Geology of Fluvial Deposits: Sedimentary Facies, Basin Analysis and Petroleum Geology: Springer-Verlag: 582 p.
[30]   Milodowski, A.E., Zazalasiewicz, J.A (1991) Redistribution of rare earth elements during diagenesis of turbidite/hemipelagic mudrock sequences of Liandovery age from central Wales. In: Morton AC, Todd SP, Haughton PDW, editors.
[31]   Mishra, M., Sen, S (2012) Provenance, tectonic setting and source-area weathering of Mesoproterozoic Kaimur Group, Vindhyan Supergroup, Central India. Geologica Acta, Vol.10: p 283-293.
[32]   Nesbitt, H.W., Young, G.M (1982) Early Proterozoic climates of sandstone mudstone suites using SiO2 content and K2O/Na2O ratio [J].  Nature. 299: 715-717.
[33]   Pettijohn, F.J (1975) Sedimentary rocks", 3rd edn. Harper and Row, New York.
[34]   Pettijohn, F.J., Potter, P.E., Siever, R (1972) Sand and Sandstone. Plate motions inferred from major element chemistry of lutites [J]. Precambrian Research. 147: 124-147.
[35]   Ramos, A., Galloway, W.E (1990) Facies and sand-body geometry of the Queen City (Eocene) tide-dominated delta-margin embayment, NW Gulf of Mexico basin. Sedimentology. 37: 1079-1098.
[36]   Ronovm A.B., Yaroshevsky, A.A (1969) Chemical composition of the Earth’s crust. In: Hart PJ (ed) The earth’s crust and upper mantle, geophysical monograph, vol 13. American Geophysical Union, Washington, DC: 37-57.
[37]   Roser, B.P., Korsch, R.J (1986) Determination of tectonic setting of sandstone mudstone suites using SiO2 content and K2O/Na2O ration [J]. Journal of Geology. 94: 635-650.
[38]   Roser, B.P., Korsch, R.J ( 1988) Provenance signature of sandstone-mudstone suite determined using discriminate function analysis of major  element data. Chemical Geology 67: 119-139.
[39]   Rudnick, R.L., Fountain, D.M (1995) Nature and composition of the continental crust: a lower crustal perspective. Rev Geophys 33: 267-309.
[40]   Shaw, D.M (1968) A review of K-Rb fractionation trends by covariance analysis [J]. Geochimica et Cosmochimica Acta. 32: 573-602.
[41]   Soder, P (1951) The Oligo-Miocene marine formation in the Qum region. NIOC, Geol. Report, No: 123 p.
[42]   Stahl, A.F., von (1911) Persian, Hndbch. Reg. Geol. 5(6): 1-46.
[43]   Taylor, S.R., McLennan, S.M (1985) The continental crust: its composition and evolution. Blackwell Scientific Publication, Carlton: 312 p.
[44]   Tucker, M.E (2001) Sedimentary Petrology: an introduction to the origion of sedimentary rocks, Blackwell Scientific Publication: 260 p.
[45]   Wedepohl, K.H (1995) The composition of the continental crust. Geochim Cosmochim Acta 59: 1217-1232.
[46]   Weltje, G.J (1994) Provenance and dispersal of sand-sized sediments: Reconstruction of dispersal patterns and sources of sand-sized sediments by means of inverse modelling techniques. Faculteit Aardwetenschappen, Universiteit Utrecht. 121: 1- 28.
[47]   Yanagi, T (2011) Generation of continental crust from the mantle. Springer:123 p.