The Study area is located in the Zagros Simply Folded Belt of Iran and in the interior Fars sub-basin. The Khaftar anticline is located in the West, North-West of Jahrom city in the Fars province (148 km distance from Persian Gulf). The trend of Khaftar anticline has three orientations, consist of North-Northeast, East-West and South-Southwest. This anticline has asymmetric structure and some faults with large strike separation observed in this anticline. In the study area, stratigraphic units are affected by many faults in this area. Also one salt plug cropping out in the middle part of the Khaftar anticline. Maybe this salt plug affected on the stratigraphic units and geometry of structure. Description of fold geometry is important because it allows comparisons within and between folds and allow us to recognize patterns in the occurrence and distribution of fold systems. The main aim of this paper is determination of fold style elements and folding pattern of the Khaftar anticline. This paper presents a part of the results of a regional study of the Fars province in the Zagros Simply folded belt, based on satellite images, geological maps, and well data. Some data, such as geological maps and geological regional data were prepared and provided by the National Iranian Oil Company (NIOC). Because of the Khaftar anticline, has complex structure, the analysis of fold style elements is seems necessary. Therefore, in further studies on this structure the changes of fold style elements will be analyzed and investigated from east to west in the different parts of this anticline. The activity of Nezamabad sinistral strike slip fault in the Khaftar anticline causes changes of axial plane characteristics and fold axis. Some of the results such as folding style analysis, how position of salt plug, changes of fold type and main structural changes (rotation of fold axis and 2.5 km displacement in this anticline) show main changes in the middle parts of the Khaftar anticline. It seems that, these changes have formed by activity of the Nezamabad fault and this fault’s activity same as fault zone.
Beydoun, Z.R., Hughes Clark, M.W. and Stoneley, R. (1992) Petroleum in the Zagros Basin. A Late Tertiary Foreland Basin Overprinted onto the Outer Edge of a Vast Hydrocarbon-Rich Palaeozoic-Mesozoic Passive Margin Shelf. American Association of Petroleum Geologists, Memoir, 55, 309-339.
Motiei, H. (1993) Stratigraphy of Zagros. Treatise on the Geology of Iran No. 1. Ministry of Mines and Metals, Geological Survey of Iran, Tehran.
Molnar, M. (2006) Tertiary Development of the Zagros Mountains, Geol 418-Earth History.
Furst, M. (1976) Tektonik und Diapirismus der ?stlichenZagrosketten. Zeitschrift der Deutschen Geologischen Gesellschaft, 127, 183-225.
Arian, M. (2013) Physiographic-Tectonic Zoning of Iran’s Sedimentary Basins. Open Journal of Geology, 3, 169-177. http://dx.doi.org/10.4236/ojg.2013.33020
Blance, et al. (2003) Structural Styles in the Zagros simple Folded Zone, Iran. Journal of the Geological Society, 160, 401-412. http://dx.doi.org/10.1144/0016-764902-110
Burberry, Caroline M., Cosgrove, John, W. and Liu, J.-G. (2008) Spatial Arrangement of Fold Types in the Zagros Simply Folded Belt, Iran, Indicated by Landform Morphology and Drainage Pattern Characteristics.
Alavi, M. (2004) Regional Stratigraphy of the Zagros Fold-Thrust Belt of Iran and Its Proforeland Evolution. American Journal of Science, 304, 1-20. http://dx.doi.org/10.2475/ajs.304.1.1
Bahroudi, A. and Koyi, H. (2003) Effect of Ductile and Frictional Décollements on Style of Extension. Journal of Structural Geology, 25, 1401-1423. http://dx.doi.org/10.1016/S0191-8141(02)00201-8
Falcon, N. (1974) Southern Iran: Zagros Mountains. In: Spencer, A., Ed., Mesozoic-Cenozoic Orogenic Belts, Geological Society of London, Special Publication 4, London, 199-211.
Setchell, C.M., Cosgrove, J.W. and Liu, J.-G. (2007) The Distribution of Fold Types in the Zagros Simply Folded Belt, Imperial College London, Iran (Map Scale 1:100,000).
Sherkati, S. and Letouzey, J. (2004) Variation of Structural Style and Basin Evolution in the Central Zagros (Izeh Zone and Dezful Embayment), Iran. Marine and Petroleum Geology, 21, 535-554.
Sherkati, S., Molinaro, M., Frizon de Lamotte, D. and Lettouzey, J. (2005) Detachment Folding in the Central Eastern Zagros Fold-Belt (Iran): Salt Mobility, Multiple Detachments and Late Basement Control. Journal of Structural Geology, 27, 1680-1696. http://dx.doi.org/10.1016/j.jsg.2005.05.010
Letouzey, J. and Sherkati, S. (2004) Salt Movement, Tectonic Events, and Structural Style in the Central Zagros Fold and Thrust Belt (Iran). Salt Sediments Hydrocarbon Prospectivity, 24th Annual GCSSEP, Foundation, Interactions and Bob F. Perkins Research Conference, Houston, 5-8 December 2004.
Alavi, M. (2007) Structures of the Zagros Fold-Thrust Belt in Iran. American Journal of Science, 307, 1064-1095. http://dx.doi.org/10.2475/09.2007.02
Barzegar, F. (1994) Basement Fault Mapping of ZagrosFolded Belt (S. W. Iran) Based on Space-Born Remotely Sensed Data. Proceeding of the 10th Thematic Conference on Geologic Remote Sensing: Exploration, Environment and Engineering, 10, 455-466.
McQuillan, H. (1991) The Role of Basement Tectonics in the Control of Sedimentary Facies, Structural Patterns and Salt Plug Emplacements in the Zagros Fold Belt of Southwest Iran. Journal of Southeast Asian Earth Sciences, 5, 453-463, Printed in Great Britain.
Talbot, C.J. and Alavi, M. (1996) The Past of a Future Syntaxis across the Zagros. In: Alsop, G.I., Blundell, D.J. and Davison, I., Eds., Salt Tectonics, Vol.100, Geological Society of London, Special Publication, London, 89-109.
O’Brien, C.A.E. (1950) Tectonic Problems of the Oil Field Belt of Southwest Iran. Proceedings of 18th International of Geological Congress, Great Britain, Part 6, 45-58.
Jamison, W.R. (1987) Geometric Analysis of Fold Development in Over-Thrust Terrenes. Journal of Structural Geology, 9, 207-219. http://dx.doi.org/10.1016/0191-8141(87)90026-5
Mitra, S. (2002) Fold-Accommodation Faults. Bulletin of the American Association of Petroleum Geologists, 86, 671-693.
Mitra, S. (2003) A Unified Kinematic Model for the Evolution of Detachment Folds. Journal of Structural Geology, 25, 1659-1673. http://dx.doi.org/10.1016/S0191-8141(02)00198-0
Suppe, J. (1985) Geometry and Kinematics of Fault-Bend Folding. American Journal of Science, 283, 684-721.
NIOC (2001) Geological Map of Iran, Kushk, 1:100,000.
Hessami, K., Koyi, H.A. and Talbot, C.J. (2001) The Significance of Strike-Slip Faulting in the Basement of the Zagros Sold and Thrust Belt. Journal of Petroleum Geology, 24, 5-28.
Shamshiri, M. (2001) The Exploration Project of Fars Region.
Twiss, R.J. and Moores, E.M. (1992) Structural Geology. W.H. Freeman and Company, New York, 224-230.
Ragan, D.M. (1985) Structural Geology, an Introduction to Geometrical Techniques. 3rd Edition, John Wiley & Sons, Inc., Hoboken, 210-215.
Ramsay, J.G. (1967) Folding and Fracturing of Rocks. McGraw-Hill, New York.
Rickard, M.J. (1971) A Classification Diagram for Fold Orientation.
Colman-Sadd, S.P. (1978) Fold Development in Zagros Simply Folded Belt, Southwest Iran. Bulletin of the American Association of Petroleum Geologists, 62, 984-1003.
Ala, M.A. (1974) Salt Diapirism in Southern Iran. Bulletin of the American Association of Petroleum Geologists, 58, 1758-1770.
Kent, P.E. (1970) The Salt of the Persian Gulf Region. Transactions of the Leicester Literary & Philosophical Society, 64, 56-88.
Player, R.A. (1969) The Hormuz Salt Plugs of Southern Iran. MS, PhD. Thesis, University of Reading, Reading, 300.
McQuarrie, N. (2004) Crustal Scale Geometry of the Zagros Fold-Thrust Belt, Iran. Journal of Structural Geology, 26, 519-535. http://dx.doi.org/10.1016/j.jsg.2003.08.009
Dehbashi Ghanavati (2009) Geometry of Folding Style Analysis in the Coastal Fars and Effects of Nezamabad Fault in the Structures Region. PhD Thesis of Structural Geology, Science and Research Branch of Tehran, Islamic Azad University, Tehran, 200.
Setudehnia, A. and Perry, J.T. (1965) Geological Map of SE & SE Fars, Scale 1: 250,000. National Iranian Oil Company, Tehran.
Barzegar, F. (1992) Introducing Firuzabad and Nezamabad Faults. Proceedings of 10th Geosciences Conference, Geological Survey of Iran, Tehran, 15-16 February 1992.
Furst, M. (1990) Strike-Slip Faults and Diapirism of the South-Eastern Zagros Ranges. Proceeding of Symposium on Diapirism, Iran, 2, 149-182.
Nogole-Sadat, M.A.A. and Almasian, M. (1993) Tectonic Map of Iran in 1:1000,000 Scale. Geological Survey of Iran, Tehran.
Yassaghi, A. (2006) Integration of Landsat Imagery Interpretationand Geomagnetic Data on Verification of Deepseatedtransvers Fault Lineaments in SE Zagros. International Journal of Remote Sensing, 27, 1-16.
Alavi, M. (1994) Tectonics of the Zagros Orogenic Belt of Iran: New Data and Interpretations. Tectonophysics, 229, 211-238. http://dx.doi.org/10.1016/0040-1951(94)90030-2
Letouzey, J., Molinaro, M., de Lamotte, D.F. and Letouzey, J. (2005) Detachment Folding in the Central Eastern Zagros Fold-Belt (Iran): Salt Mobility, Multiple Detachments and Late Basement Control. Journal of Structural Geology, 27, 1680-1696. http://dx.doi.org/10.1016/j.jsg.2005.05.010