Document Type : Original Research Paper


1 Ph.D. Student, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran

2 Associate Professor, Research Institute for Earth Science, GSI, Tehran, Iran

3 Associate Professor, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran


Kuh-e-Ahan is a high-standing single relief within a rather flat plain, which is located in the north of the Tabas block, near the intersection of the Nayband and Kalmard faults and there are  great outcrops of  fe-oxide, along with eastern-western faults and fractures in Kooh-e-Ahan area.. The present study uses structural and remote sensing methods to discover the mechanism for evolution of the Kuh-e-Ahan, and to understand style of mineralization in the mountain, emphasizing on the role of fractures and major faults. In our remote sensing approach, we used DEM data and Aster satellite images and their filtering in main directions to detect displacements and sudden offsets of lithologic units and changes in drainage patterns. In our field studies, we studied mechanism of the faults, emphasizing on the faults within the Kuh-e-Ahan mining district. The results show N-S faults (Nayband fault trend) and NE-SW faults (Kalmard trend) have a general right-lateral mechanism, and the E-W faults are left-lateral with a reverse component. Structural model developed in this study suggest that strike-slip displacement on conjugate fault provided the space required for ascend and development of hydrothermal mineral deposits within the mine district.


Aghanabati, A., 1977- Etude geologique de la region de Kalmard (W. Tabas). G.S.I. report No: 35, 230 p.
Aghanabati, A., Ruttner, M., Nabavi, M.H., Hajian, J. and Alavi-Naini, M., 1994- Geological Sheet Map of Eshgh-Abad. Geological Survey of Iran.
Berberian, M., 1976a- Contribution to the seismotectonics of Iran (part 2). Geology Survey of Iran, Rep, No. 39, 518 p, 5 maps, 259 figures.
Berberian, M., 1976b- An explanatory note of the first seismotectonic map of Iran; a seismotectonic review of the country. In contribution to the seismotectonics of Iran, edited by M. Berberian, G.S.I.
Berger, B. R., Wanty, R. B. and Tuttle, M. L., 2001- Scale versus detail in water-rock investigations 2: Field-scale models of fracture networks in mineral deposits. Water-Rock Interaction, 137- 141.
Burg, J. P., 2016- Structural Geology and Tectonics . Free ebook.
Eftekhar-Nejad, J., Ruttner, A., Valeh, N., Nabavi, M. H., Hajian, J., Alavi, M. and Haghipour, A., 1977- Geological Quadrangle Map of Ferdows. Geological Survey of Iran.
Milton, D. J., 1976- Qal’eh Hassan Ali Maars, Central Iran. Bull. Volcanol, v. 40 (3), p. 201- 208.
Mohajer-Ashjai, A., Behzadi, H. and Berberian, M., 1975- Reflections on the rigidity of the last Blok and recent crustal deformation in eastern Iran. Tectonophysics, pp.28, 281- 301.
Park, R. G., 1993- Geological structures and moving plates. 2nd ed. Chapman & Hall, Glasgow, 337 p.
Robb, L., 2005- Introduction to Ore-Forming Processes. Blackwell Science Ltd a Blackwell Publishing company.
Ruttner, A., Nabavi M. H. and Hajian, J., 1968- Geology of the Shirgesht area (Tabas area, east Iran). G.S.I., Rep. 4, 133 p.
Stocklin, J. and Nabavi, M. H., 1973- Tectonic map of Iran, G.S.I.
Stocklin, J., Eftekhar-Nezhad, J. and Hushmand-Zadeh, A., 1965- Geology of the Shotori Range (Tabas area, East Iran), G.S.I., Rep. No.3, 69 p.
Swanson, M. T., 1988- Pseudotachylyte-bearing strike-slip duplex structures in the Fort Foster Brittle Zone of southern most Maine.J. Struct. Geol. 10, 813- 828.
Tarek, A. S., 2013- Analysis and Tectonic Implication of DEM-Derived Structural Lineaments, Sinai Peninsula, Egypt. International Journal of Geosciences, 2013, 4, 183- 201.
Varet, J., 1970- Contribution à l'étude des roches volcaniques du bassin du Lout (Iran). C. R. Somm. Soc. Géol. Fr., p. 194-195.
Walker, R. T., Gans, P., Allen, M. B., Jackson, J., Khatib, M., Marsh, N. and Zarrinkoub, M., 2009- Late Cenozoic volcanism and rates of active faulting in eastern Iran. Geophys. J. Int.177, 783- 805