OJG  Vol.5 No.6 , June 2015
5 Analysis of Fault-Related Folding in South of Birjand
Author(s) Mohammad Khalaj
ABSTRACT
Folds have a significant development in the Cretaceous-Tertiary rock units of the northern part of Bagheran Mountains in southwest Birjand between Lut and Sistan structural zones. The general trends of fold axis and axial surface are E-W and the folds are less exposed by distance from mountain and plain boundary. Geometric and kinematic status investigation of folds (such as f2 fold in the middle part) and faults shows that faulting process has created some of the folds leading to their development. Such structures are described as fault-related folds. Also, analysis of geometry and mechanism of faults indicate that back thrusts have the largest influence on generation and development of folds in this region.

Cite this paper
Khalaj, M. (2015) 5 Analysis of Fault-Related Folding in South of Birjand. Open Journal of Geology, 5, 394-398. doi: 10.4236/ojg.2015.56037.
References
[1]   Tavarnelli, E. (1997) Structural Evolution of a Foreland Fold-and-Thrust Belt: The Umbria-Marche Apennines, Italy. Journal of Structural Geology, 19, 523-534.
http://dx.doi.org/10.1016/S0191-8141(96)00093-4

[2]   Mitra, S. (2002) Structural Models of Faulted Detachment Folds. AAPG Bulletin, 86, 1673-1694.

[3]   Jamison, W.R. (1987) Geometric Analysis of Fold Development in Overthrust Terrains. Journal of Structural Geology, 9, 207-219. http://dx.doi.org/10.1016/0191-8141(87)90026-5

[4]   Morley, C.K. (1994) Fold-Generated Imbricates: Examples from the Caledonides of Southern Norway. Journal of Structural Geology, 16, 619-631. http://dx.doi.org/10.1016/0191-8141(94)90114-7

[5]   Ali, A. (2004) Iran’s Geology. Iran’s Geological Survey and Mineral Explorations Publications, Me’radj Blvd, Tehran, Iran, 586.

[6]   Eftekharnezhad, J. (1986) 1:100000 Geological Map of Birjand. Iran’s Geological Survey and Mineral Explorations Publications, Me’radj Blvd, Tehran, Iran.

[7]   Price, N.J. and Cosgrove, J.W. (1990) Analysis of Geological Structures. Cambridge University Press, Cambridge, 502 p.

[8]   Fluety, M.J. (1964) The Description of Folds. Proceedings of the Geologist’ Association, 75, 461-492. http://dx.doi.org/10.1016/S0016-7878(64)80023-7

 
 
Top