QUATERANRY PALEOSTRESS RECONSTRUCTION BASED ON FAULT SLIP ANALYSIS IN SOUTHERNEAST ALBORZ

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OMIDY P.; NOGOL-SADAT M.A.A.; GHOREYSHI MANOUCHEHR

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Journal: GEOSCIENCES Year:2002 | Volume:11 | Issue:45-46 Page(s): 48-63

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Title

QUATERANRY PALEOSTRESS RECONSTRUCTION BASED ON FAULT SLIP ANALYSIS IN SOUTHERNEAST ALBORZ

Author(s)

OMIDY P. | NOGOL-SADAT M.A.A. | GHOREYSHI MANOUCHEHR | Issue Writer Certificate

Keywords

EAST ALBORZQ2

QUATERNARY FAULTQ3

PALEOSTRESSQ4

FAULT SLIP ANALYSISQ4

Abstract

On the basis of Kinematic findings at different scales in QUATERNARY FAULT zones, and using modem methods of FAULT SLIP ANALYSIS, Quaternary stress field was reconstructed. Orientation of slip plane, slip vector, principal stresses, shape of stress ellipsoid and angle of internal friction are involved the FAULT SLIP ANALYSIS. Orientations of σ 1, σ 2 and σ 3 stresses for primary data (nonrotated) were determined as 084°/04°, 232°/82° and 077°/08° respectively. The shape of stress ellipsoid was defined on the basis of shape factor [R= ((σ 2 - σ 3)/( σ1 - σ 3)] (Angelier, 1975). The R-value for all studied regions was about 0.5 and deformation type was mainly left lateral transpressional with small reverse components. Such results are evidence of north trending σ1 in the region and northward movement of the crust. The results are in agreement with other method such as focal mechanisms of earthquakes.

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APA: Copy

OMIDY, P., NOGOL-SADAT, M.A.A., & GHOREYSHI, MANOUCHEHR. (2002). QUATERANRY PALEOSTRESS RECONSTRUCTION BASED ON FAULT SLIP ANALYSIS IN SOUTHERNEAST ALBORZ . GEOSCIENCES, 11(45-46), 48-63. SID. https://sid.ir/paper/31766/en

Vancouver: Copy

OMIDY P., NOGOL-SADAT M.A.A., GHOREYSHI MANOUCHEHR. QUATERANRY PALEOSTRESS RECONSTRUCTION BASED ON FAULT SLIP ANALYSIS IN SOUTHERNEAST ALBORZ . GEOSCIENCES[Internet]. 2002;11(45-46):48-63. Available from: https://sid.ir/paper/31766/en

IEEE: Copy

P. OMIDY, M.A.A. NOGOL-SADAT, and MANOUCHEHR GHOREYSHI, “QUATERANRY PALEOSTRESS RECONSTRUCTION BASED ON FAULT SLIP ANALYSIS IN SOUTHERNEAST ALBORZ ,” GEOSCIENCES, vol. 11, no. 45-46, pp. 48–63, 2002, [Online]. Available: https://sid.ir/paper/31766/en

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