فصلنامه علمی علوم زمین

فصلنامه علمی علوم زمین

تغییرات کرنش و کوتاه شدگی در طول تاقدیس میدان نفتی مارون، استان خوزستان

نوع مقاله : مقاله پژوهشی

نویسندگان
1 گروه زمین‌شناسی، دانشکده علوم زمین، دانشگاه شهید چمران اهواز، اهواز، ایران
2 شرکت ملی مناطق نفت خیر جنوب، اهواز، ایران
چکیده
میدان نفتی مارون یکی از بزرگ‌ترین میدان‌های نفتی حوضه زاگرس است، که در بخش خاوری منطقه ساختاری فروافتادگی دزفول، در مجاورت میدان نفتی آغاجاری، میدان نفتی اهواز و میدان نفتی کوپال قرار دارد. در این پژوهش با استفاده از مقاطع لرزه‌­ای تفسیر شده و بررسی سیمای چین‌خورده افق آسماری، مقادیر زاویه بین یالی و هندسه سطح محوری در مقاطع مختلف اندازه‌گیری شد. براساس مقادیر انحراف سطح محوری و با به کار­گیری توابع تصویری، مقادیر کرنش برشی، نسبت ابعادی تاقدیس و مقادیر نسبت کرنش و کوتاه‌شدگی در بخش‌­های مختلف تاقدیس میدان نفتی مارون تعیین گردید. نقشه­‌های پهنه­‌بندی برای پارامترهای کرنش برشی، نسبت کرنش و کوتاه‌­شدگی در طول تاقدیس تهیه شد. براساس نتایج، مقادیر کرنش برشی از 0.15 در بخش مرکزی و انحنای محور تاقدیس تا 0.01 در دماغه‌­های تاقدیس متغیر است. همچنین نتایج، نشان‌دهنده دامنه تغییرات مقادیر کوتاه­‌شدگی بین 2 تا 20 درصد و مقادیر نسبت کرنش در محدوده 1.35 تا 1.07در بخش‌­های مختلف تاقدیس می­‌باشد. 
کلیدواژه‌ها

موضوعات


Ahmadhadi, F., Daniel, J.M., Azzizadeh, M., and Lacombe, O., 2008. Evidence for pre-folding vein development in the Oligo-Miocene Asmari Formation in the central zagros fold belt, Iran. Tectonics 27, TC1016.
Alavi, M., 2004. Regional stratigraphy of the Zagros fold-thrust belt of Iran, and its proforeland evolution. American Journal of Science 304,1–20, doi: 10.2475/ajs.304.1.1.
Alavi, M., 2007. Structures of the Zagros fold-thrust belt in Iran. American journal of science, vol. 307, 1064-1095.
Al-Azzawi, N. K., 2008. Local Shortening of Folds and Detachment Surface Depth with Examples from the Foreland Belt of Iraq. Iraqi Journal of Earth Sciences- Vol. 8. No. 1- May.
Bastida, F., Aller, J., Bobillo-Ares, N.C., and Toimil, N.C., 2005. Fold geometry: a basis for their kinematical analysis. Earth Science Reviews 70, 129e164.
Bastida, F., Aller, J., Toimil, N.C., Lisle, R.J., Bobillo-Ares, N.C., 2007. Some considerations on the kinematics of chevron folds. Journal of Structural Geology 29, 1185e1200.
Berberian, M., 1995. Master ‘blind’ thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics, Tectonophysics, 241, 193–224.
Berberian, M., and King, G.C.P., 1981. Towards a paleogeography and tectonic evolution of Iran. Canadian Journal of Earth Sciences 18, 210–265.
Blance, E.J.P., Allen, M.B., Inger, S., and Hassani, H., 2003. Structural styles in the Zagros Simple Folded Zone, Iran. J. Geol. Soc. 160, 401–412. doi:10.1144/0016-764902-110.
Brown, D., Alvarez - Marron, J., Perez - Estafin, A., Gorozjanin, Y., Barysheva, V., and Puchkov, V., 1997. Geometric and kinematic evolution of the foreland thrust and fold belt in the southern Urals. Tectonics, VOL. 16, NO. 3, PAGES 551-562, JUNE 1997.
Espurt, N., Hippolyte, J.C., Sillard, M., and Bellier, O., 2012. Geometry and kinematic evolution of a long-living foreland structure inferred from field data and cross section balancing, the Sainte-Victoire System, Provence, France. Tectonics, VOL. 31, TC4021, doi:10.1029/2011TC002988.
Faghih, A., Dehghan, M., Sobhani, S.S., 2023. Study of deformation pattern and kinematic characteristics in the Gelmandeh metamorphic complex, Saghand region, Central Iran. Advanced Applied Geology 12 (4), 617-634.
Falcon, N.L., 1974. Problems of the relationship between surface structures and deep displacements illustrated by the Zagros range. Geological Society of London. Spec. Pub. 3, 9–22.
Fergosson, C., Nutman, A., Mohajjel, M., and Bennett, V.C., 2016. The Sanandaj–Sirjan Zone in the Neo-Tethyan suture, western Iran: Zircon U–Pb evidence of late Palaeozoic rifting of northern Gondwana and mid-Jurassic orogenesis, Gondwana Research, 58: 216-238.
Fossen, H., 2016. Structural Geology. Cambridge University Press.
Frehner, M.D., and Grasemann, B., 2012. Mechanical versus kinematical shortening reconstructions of the Zagros High Folded Zone (Kurdistan region of Iraq), Tectonics, 31, TC3002, doi:10.1029/2011TC003010.
Fry, N., 1979.  Random point distribution and strain measurements in rocks. Tectonophysics 60:89-105.
Ghassemi, M. R., Schmalholz, S. M., and Ghassemi, A. R., 2010. Kinematics of constant arc length folding for different fold shapes. Journal of Structural Geology. 32 (2010) 755e765.
Imber, J., Perry, T., Jones, R., and Wightman, RH., 2012. Do cataclastic deformation bands form parallel to lines of no finite elongation (LNFE) or zero extension direction? Journal of Structural Geology. 45:158–172.
Jahani, S., Callot, J.P., Frizon de Lamotte, D., Letouzey, J., and Leturmy, P., 2007. The Salt Diapirs of the eastern Fars province (Zagros, IRAN): a Brief outline of their past and present. In: Lacombe, O., Lavé, J., Roure, F., Vergés, J. (Eds.), Thrust Belt and Foreland Basin. Springer Berlin Heidelberg, pp. 289–308.
Keshavarz, S., and Faghih, F., 2020. Heterogeneous sub–simple deformation in the Gol–e–Gohar shear zone (Zagros, SW Iran): insights from microstructural and crystal fabric analyses. Int. J. Earth Sci. 109, 421–438. DOI: 10.1007/s00531-019-01812-9.
McQuarrie, N., 2004. Crustal scale geometry of the Zagros fold–thrust belt, Iran. Journal of Structural Geology 26, 519–535.
Mohajjel, M., and Fergusson, C.L., 2000. Dextral transpression in Late Cretaceous continental collision, Sanandaj–Sirjan Zone, western Iran. Journal of Structural Geology, 22, 1125-139.
Mohammadiyan, R., 2008. The report of fracture analysis of Maroon oil field. National Iranian Oil Company. Report no, 6281.
Molinaro, M., Zeyen, H., and Laurencin, X., 2005. Lithospheric structure beneath the southeastern Zagros Mountains, Iran: Recent slab break-off? Terra Nova 17, 1–6. doi:10.1111/j.1365-3121.2004.00575.x.
Mouthereau, F., Lacombe, O., and Verg´es, J., 2012. Building the Zagros collisional orogen: timing, strain distribution and the dynamics of Arabia/Eurasia plate convergence. Tectonophysics 532, 27–60.
Ramsay, J.G., and Hubber, M.I., 1983. The techniques of modern structural geology, 1: strain analysis. Academic Press, London.
Saedi, G., Soleimani, B., Samani, B., and Arzani, A., 2022. The interaction between faults and in-situ stress on the kinematic and subsurface natural fracture of Aghajari oilfield in southwest of Iran. Journal of Petroleum Science and Engineering. 208, 109567.
Samani, B., 2017. Deformation flow analysis and symmetry of Goushti shear zone, Sanandaj-Sirjan metamorphic belt, Iran. Geopersia. 7, 117-130.
Sarkarinejad, K., and Azizi, A., 2008. Slip partitioning and inclined dextral transpression along the Zagros Thrust System, Iran. Journal of Structural Geology, 30: 116–136.
Sarkarinejad, K., Keshavarz, S., Fafgih, A., and Samani, B., 2017. Kinematic analysis of rock flow and deformation temperature of the Sirjan thrust sheet, Zagros Orogen, Iran. Geological Magazine. 154, 147–165.
Sherkati, S., Letouzey, J., and Frizon Delamotte, D., 2006. Central Zagros fold-thrust belt (Iran): new insights from seismic data, field observation, and sandbox modeling. Tectonics 25, TC4007. doi:10.1029/2004TC001766.
Sherkati, S., Molinaro, M., Frizon Delamotte, D., and Letouzey, J., 2005. Detachment folding in the Central and Eastern Zagros fold-belt (Iran): salt mobility, multiple detachments and late basement control. Journal of Structural Geology. 27,1680–1696.
Stocklin, J., 1968. Structural history and tectonics of Iran, a review, A. A. P. G. Bull., 52(7), PP. 1229-1258.
Takin, M., 1972. Iranian geology and continental drift in the Middle East. Nature 235, 147-150.
Talebian, M., and Jackson, J., 2004. A reappraisal of earthquake focal mechanisms and active shortening in the Zagros mountains of Iran. Geophysics. 156, 506–526.
Teyssire, C., 1985. A crustal thrust system in an intracratonic tectonic environment. Journal of Structural Geology. Vol 7. No 6, pp. 689 to 700.
Twiss, R.G., and Moores, E.M., 2007. Structural geology, Freeman and Company, New York.
Vernant, P., and Chery, J., 2006. Mechanical modeling of oblique convergence in the Zagros, Iran. Geophysics. 165, 991–1002.
دوره 34، شماره 4 - شماره پیاپی 134
زمستان 1403، سال سی و چهارم، شماره 4، پیاپی 134
زمستان 1403
صفحه 87-98