Investigating the effect of sedimentary environment and diagenesis on karst development potential in Tirgan Formation (west of Kopet-Dagh, NE Bojnurd, Iran)

Authors

Abstract

Tirgan Formation in Kopt-Dagh structural zone is an important karstic formation which contains significant water resources. Numerous water wells have been drilled in this formation. They have very different discharges. Ninety (90) thin sections, geophysical logs, well discharge changes, karst morphology have been studied. The karst development potential of each rock unit of this formation has been studied in this area, which depends on the sedimentary environment, diagenesis and siliciclastic sediment. In this region, Tirgan Formation can be divided into three limestone rock units and two limestone-marl rock units. This formation has been deposited in a homoclinal ramp and four sedimentary belts of tidal, lagoon, shoal to the open sea and twelve micro-facies have been identified. Twelve microfacies were identified. Compaction, stylolitization as an effective diagenetic factor is reducing from the base to the top of the formation and dissolution is increased. Siliciclastic deposits, quartz and shale decreased and rate of carbonate deposition and the diversity of allochems have increased from the base to the top. These events, in principle, significantly increased the potential for karst development. There are varieties of large and Small-scale karst features such as sinkholes, dry valleys, caves, karren and grikes in Upper parts of formation. Higher discharge of water wells (60 l/sec) and their continuous discharge, higher transmissivity (1037 m2/day) in the upper rock unit of Tirgan formation shows that, this rock unit has the greatest potential for karst development and developed later.

Keywords

References

آقانباتی، ع (1385) زمین‌شناسی ایران، سازمان زمین‌شناسی و اکتشافات معدنی کشور، 586 ص.
افشارحرب، ع (1373) زمین‌شناسی کپه‌داغ، طرح تدوین کتاب زمین‌شناسی ایران، شماره 11، سازمان زمین‌شناسی ایران 275 ص.
رحیم‌پوربناب، ح (1389) سنگ­شناسی کربناته (ارتباط دیاژنژ و تکامل تخلخل)، انتشارات دانشگاه تهران، 487ص.
پورسلطانی، م. ر.، کرمانشاهی، ح.، جوانبخت، م (1396) تفسیر محیط­رسوبی، دیاژنژ و کیفیت مخزنی سازند تیرگان به عنوان سنگ­مخزن احتمالی در خاور حوضه رسوبی کپه‌داغ، نشریه رسوب­شناسی کاربردی، دوره 5، شماره 10، ص 127-151.
ریوندی، ب. و همکاران (1389) نشریه رخساره­های رسوبی و چینه­نگاری سکانسی سازند تیرگان در شرق حوضه کپه‌داغ (دره خور، شمـال‌شـرق مـشهد)، جـلد 3، ص 23-24.
موسوی‌زاده، و همکاران (1387) رخساره‌های رسوبی و چینه‌نگاری سازند تیرگان در برش‌های جوزک و چمن­بید در غرب حوضه رسوبی کپه‌داغ و انطباق با نواحی شرق حوضه، مجله پژوهشی دانشگاه اصفهان (علوم­پایه)، جلد 32، شماره 3، ص 56-33.
آقاداداشی ابهری، هاشمی، م، آقانباتی، ع (1380) بررسی و مطالعه بیوفاسیس و لیتوفاسیس سازند تیرگان در بخش خاوری کپه‌داغ، بیستمین گردهمایی علوم­زمین، سازمان زمین­شناسی و اکتشافات معدنی کشور، ص 376.
شامیر، م (1394) لیتواستراتیگرافی و بیواستراتیگرافی سازند تیرگان در برش­های چینه‌شناسی بیگان و باغچق (کپه‌داغ غربی) دانشگاه شهید بهشتی، پایان­نامه کارشناسی­ارشد.
Flügel, E (2010) Microfacies of carbonate rocks, analysis interpretation and application, Berlin, Heidelberg, New York: Springer Verlag, Berlin, 976 p.
Ford, D. C. & Williams, P. W (2007) Karst hydrogeology and Geomorphology. John Wiley & Sons Ltd., 562 P.
Maire, R (1990) La haute Montagne calcaire. Karstologia Mem, 3: 731p.
Milanović, P. T (2004) Water resources engineering in karst, CRC Press, Florida, USA. 312p.
Tucker, M. E. and Wright, V. P (1990) Carbonate Sedimentology. Blackwell Science, Inc. 482p.
Tucker, M. E. and Bathurst, R. G (1990) Carbonate Diagenesis. Int. Ass. Sediment. Reprint series, 1: 312 p.
Tucker, M. E (2001) Sedimentary Petrology, Third edition, Blackwell’s, Oxford, 260 p.
Wilson, J. L (1975) Carbonate facies in geologic history: New York, Springer-Verlag, 471 p.
Baoqing Wang, Ihsan S (2002) Al-Aasm Karst Controlled Diagenesis and Reservoir Development: Example from the Ordovician Main-Reservoir Carbonate Rocks on the Eastern Margin of the Ordos Basin, China, AAPG Bulletin, 86 (9): 16-39.
Brigaud, B. Durlet, C. Deconinck, J. F. Vincent, B. Thierry, J. and A. Trouiller (2009) The origin and timing of   multiphase cementation in carbonate: Impact of regional scale geodynamic events on the Middle Jurassic Limestones diagenesis (Paris Basin, France). Sedimentary geology, 222(3-4): 161-180.
Carvalho, M. V. F., Ros, L. F. D., & Gomes, N. S (2006) Carbonate cementation patterns and diagenetic Reservoir facies in the Campos Basin Cretaceous turbidities, offshore eastern Brazil. Marine and Petrol. Geol., 12 (7): 741-758.
Choquette, P. W. and N. P. James (1987) Diagenesis in Limestones–The Deep Burial Environment. Geoscience Canada, 14: 3-35.
Dunham, R. J (1962) Classification of Carbonate Rocks according to depositional Texture. In: Ham, W. E. (ed), Classification of Carbonate Rocks. American Association of Petroleum Geologists, Memoir, 1: 108-121.
James, N. P. & Choquette, P. W (1984) Diagenesis in limestones-the meteoric diagenetic environment. Geoscience, Canada, 11: 161–194.
Javanbakht, M., Ghazi, S., Moussavi-Harami, R., Mahboubi, A (2013) Depositional history and sequence stratigraphy of Tirgan formation (Barremian-Aptian) in central Kopet Dagh, NE Iran. Journal of Geological Society of India 82, 701-711.
Javanbakht, M., et al (2018) Carbonate diagenesis in the Barremian-Aptian Tirgan Formation (Kopet- Dagh Basin, NE Iran): Petrographic, geochemical and reservoir quality constraints.  Journal of African Earth Sciences.
Rauch, H. W., & White, B. W (1970) Lithologic controls on the development of solution porosity in Carbonate aquifers. Water Resources Research, 6: 1175–1192.
Sweeting, M. M., & Sweeting, G. S (1969) Some aspects of the Carboniferous limestone in relation to its landforms with particular reference to N.W. Yorkshire and County Clare. Research Mediterranean, 7: 201–208.
 

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History

  • Receive Date: 26 July 2020
  • Revise Date: 08 January 2021
  • Accept Date: 09 January 2021

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