Geomechanical modelling of fault-propagation fold: insights from the role of density on the geometry, and s tress and s train evolution, Ayegan anticline, Central Alborz

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Khalife Soltani Anis; ALAVI SEYED AHMAD; GHASSEMI MOHAMMAD REZA; Ganjiani Seyed Mehdi

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Journal: TECTONICS Year:2019 | Volume:3 | Issue:10 Page(s): 27-40

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Title

Geomechanical modelling of fault-propagation fold: insights from the role of density on the geometry, and s tress and s train evolution, Ayegan anticline, Central Alborz

Author(s)

Khalife Soltani Anis | ALAVI SEYED AHMAD | GHASSEMI MOHAMMAD REZA | Ganjiani Seyed Mehdi | Issue Writer Certificate

Keywords

S tress and S train evolution

Density

Fault-propagation fold

Ayegan anticline

Central Alborz

Abstract

Fault-related folds extend across mos t of mountain belts, accretionary prisms, fold-and-thrus t belts, and intraplate portions. The widespread importance of such s tructures in the exploration and extraction of hydrocarbon resources and also seismological aspects had led to consideration beyond the s tructural geology s tudies. Numerical modeling of fault-related folds using finite element method can provide valuable information on the S tress and S train evolution. In this regard, present s tudy considers the S tress and S train evolution of the Aygan Fault-propagation fold, which has evolved from footwall shortcut thrus ts of the Mosha fault during inversion of the Central Alborz basin in Oligocene-Miocene, using finite element method. In the following, the evolution of s tress and s train in the Aygan Fault-propagation fold considers and analyses using differential s tress-s train, s train-time, and s tress-time diagrams, and also effects of Density change on fold geometry. The modelling results show that increasing and decreasing of Density doesn’ t play a significant role in S tress and S train evolution, so that only slight variations appeared on backlimb. The model results, however, show that increasing and decreasing of Density results in increasing and decreasing of half-wavelength, that indicate a direct relationship between Density and half-wavelength in the Fault-propagation fold.

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APA: Copy

Khalife Soltani, Anis, ALAVI, SEYED AHMAD, GHASSEMI, MOHAMMAD REZA, & Ganjiani, Seyed Mehdi. (2019). Geomechanical modelling of fault-propagation fold: insights from the role of density on the geometry, and s tress and s train evolution, Ayegan anticline, Central Alborz. TECTONICS, 3(10 ), 27-40. SID. https://sid.ir/paper/405033/en

Vancouver: Copy

Khalife Soltani Anis, ALAVI SEYED AHMAD, GHASSEMI MOHAMMAD REZA, Ganjiani Seyed Mehdi. Geomechanical modelling of fault-propagation fold: insights from the role of density on the geometry, and s tress and s train evolution, Ayegan anticline, Central Alborz. TECTONICS[Internet]. 2019;3(10 ):27-40. Available from: https://sid.ir/paper/405033/en

IEEE: Copy

Anis Khalife Soltani, SEYED AHMAD ALAVI, MOHAMMAD REZA GHASSEMI, and Seyed Mehdi Ganjiani, “Geomechanical modelling of fault-propagation fold: insights from the role of density on the geometry, and s tress and s train evolution, Ayegan anticline, Central Alborz,” TECTONICS, vol. 3, no. 10 , pp. 27–40, 2019, [Online]. Available: https://sid.ir/paper/405033/en

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