The Structural and Stress Analysis of Hemrin North Structure, North of Iraq.
The study focused on the results of first paleostress from thrust fault slip data on Tertiary age of Hemrin North Structure, North of Iraq. The stress inversion was performed for fault slip data using an improved right dihedral model, and then followed by rotational optimization (Georient Software). The trend of the principal stress axes (σ1, σ2 and σ3) and the ratio of the principal stress differences (R) show the main paleostress field is NE-SW compression regime. As well as using Lisle graph and Mohr diagram to determine the magnitudes of palestress. The values paleostress of the study area were σ1=1430 bars, σ2=632 bars and σ3=166 bar. The large magnitudes of the primary stress axes could be attributed to active tectonic processes that caused pre-Tertiary deformation.
Angelier. J. and Mechler, P., Sur une method graphique de recherché des contraintes principals egalment utilizable en technique et en seismologie: La method des diedres: Bulletin de Societie Geologique de France, Vol. 19, pp: 1309-1318. 1977.
Bott, M. H. P., “The mechanics of oblique- slip faulting”, Geological Magazine, Vol. 96, pp. 109-117. 1959.
Angelier, J., “Determination of the mean principal directions of stresses for a fault population: Tectonophysics”, Vol. 56, pp. T17-T26. 1979.
Aydin, A., “Determination of the orientation of the principal stresses from three or more sets of contemporaneous faults”, Transaction of the American Geophysical Union, Vol. 61, pp. 11-17. 1980.
Angelier, J., “From Orientation to Magnitudes in Paleostress Determinations using Fault Slip data”, Journal of Structural Geology, Vol. 11, pp. 37-50. 1989.
Hancock, P. L., Al-Kahdi, A., Barka, A.A. and Bevan, T. G., “Aspects of analyzing Brittle structures”, Annales Tectonic, Vol. 1, pp. 5-19. 1987.
Lisle, R.J., “Principal Stresss orientations from faults: An additional constraint”, International Journal of Structural Geology and Tectonics. Vol. 1, pp: 155- 158. 1987.
Hatzor, Y and Reches, Z., “Structure and paleostress in the Gilboaregion, western margins of the Dead Sea transform”, Tectonophysics. Vol. 180, pp: 87-100. 1990.
Sassi, W. and Carey – Gailhardis, E., “Interpretation mechanique du glissementsur les failles: Introduction dun critere de frottement”, Annales Tectonicae, Vol. 1: pp. 139- 154. 1987.
Al-Obaidi, M. R., “Stress field determination (Orientation and Magnitudes) and their relation to structural trends and overburden thickness for Sinjar and Bashiqa structures, North of Iraq”, Journal of Science, Iraq, Vol. 35, No. 2: pp. 365- 380. 1994.
Al- Obaidi, M. R. and Al-Kotbah, A. M. “The magnitudes of the paleostresses of Yemen Faults in the sedimentary cover”, Faculty of Science Bulletin, Vol.16, pp: 95-109. 2003.
A-Hachem, A.E., and Al-Obaidi, M. R., “Determination of the Paleostress Orientations and Magnitudes for Missan Structures, Southeastern Iraq”, Journal of University of Babylon for Pure and Applied Sciences. Vol. 26, No. 10, pp: 213-223. 2018.
http:// www. Google earth image, 2020.
Al-Khadimi, J. A, Sissakian V.K, Fattah A. S., “Tectonic map of Iraq”, State Company of Geological Survey and Mining, Baghdad, Iraq. 1996.
Al Naqib, K. M., “Geology of the Southern area of the Kirkuk liwa”,_2ndArab Petroleum Cong. Pub., London. 1959.
Buday, T., and Jassim, S. Z., “The Regional Geology of Iraq. Vol. 1, Stratigraphy and Paleogeography”, Dar Al- Kutib Publishing. Mosul, Iraq. 445p. 1980.
Deikran, D.B., “The study of Finite Strain in Henrin North Fold- Central Iraq”. Un published Ph.D. Thesis, University of Baghdad, Iraq. 177p. 2003.
Jassim, S. Z., and Goff, J. C., Geology of Iraq. Dolin, Prague, Czech Republic, 341p. 2006.
Al- Diabat, A. A. N., “Paleostress and Strain Analysis of Cretaceous Rocks in Eastern Margin of Dead Sea Transform, Jordan”, Unpublished, Ph.D. Thesis, University of Baghdad, Iraq. pp.178, 1999.
Al- Shwaily, A. K. and Al-Obaidi, M.R., “Determination of the Paleostress Magnitudes of the Eastern Part of the Low Folded Zone, E-Iraq”, Indian Journal of Natural Sciences, Vol. 9, pp. 15145-15152. 2018.
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