APPLICATION OF QUARTZ AND CALCITE MICROSTRUCTURES AND FLUID INCLUSIONS ON ESTIMATION OF DEFORMATION CONDITION AND ORIGIN OF THE ZAGROS OROGEN THRUST SHEETS IN THE BAKHTYARI AREA

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NEMATI M.; YASSAGHI A.; KAMALI M.R.

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Paper Information

Journal: Iranian Journal of Crystallography and Mineralogy Year:2010 | Volume:18 | Issue:2 Page(s): 181-194

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Title

APPLICATION OF QUARTZ AND CALCITE MICROSTRUCTURES AND FLUID INCLUSIONS ON ESTIMATION OF DEFORMATION CONDITION AND ORIGIN OF THE ZAGROS OROGEN THRUST SHEETS IN THE BAKHTYARI AREA

Author(s)

NEMATI M. | YASSAGHI A. | KAMALI M.R. | Issue Writer Certificate

Keywords

HIGH ZAGROSQ3

THRUST SHEETSQ3

CALCITE MICROSTRUCTUREQ3

QUARTZ MICROSTRUCTUREQ3

FLUID INCLUSIONSQ2

Abstract

Structural analysis of the HIGH ZAGROS Zone and southwestern rim of the Sanandaj-Sirjan Zone in the Chaharmahal-va-Bakhtyari area resulted in recognition of a thrust system comprises the Ben, Hafshejan, Farsan, Kuhrang and Bazoft THRUST SHEETS from NE to SW. In this study, quartz and CALCITE MICROSTRUCTUREs as well as FLUID INCLUSIONS have been utilized to inspect deformation conditions of the THRUST SHEETS. Microstructural study of quartz grains from the Ben and Hafshejan THRUST SHEETS and their basal thrust zone show evidence of ductile deformation that demonstrate the deformation temperature from 250o to 350oC for the sheets. Geothermometry study of the sheets using calcite mechanical twins also reveals temperature of 250oC for the sheets. FLUID INCLUSIONS study on quartz veins from these THRUST SHEETS display homogenization temperature up to 220oC for primary inclusions. This geothermometry survey demonstrates that physical conditions of deformation do not change significantly but increases gradually from the southwestern rim of the Sanandaj-Sirjan Zone toward HIGH ZAGROS Zone. Based on present data, the area between the Ben and Hafshejan THRUST SHEETS where is considered as the internal part of the Zagros orogen, display characteristics of a transitional zone. Therefore, the Farsan thrust sheet or the Main Zagros Reverse Fault which is known as the margin between the Arabian Plate and Central Iran do not pose this character. The boundary between the Sanandaj-Sirjan Zone as the internal part and the HIGH ZAGROS Zone as the external part of the Zagros orogene is not abrupt and occurs across a transitional zone comprises a thrust system where basement is also partially involved.

Cites

PETROGRAPHIC EVIDENCES FOR HIGH TEMPERATURE DEFORMATION IN THE MARGIN OF KIKI GRANITOID PLUTON, CENTRAL IRAN

References

MICROSTRUCTURAL AND STRAIN ANALYSIS OF QUARTZ GRAINS ON ESTIMATION OF DEFORMATION CONDITIONS AND ORIGIN OF THRUST SHEETS IN THE EASTERN ALBORZ

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APA: Copy

NEMATI, M., YASSAGHI, A., & KAMALI, M.R.. (2010). APPLICATION OF QUARTZ AND CALCITE MICROSTRUCTURES AND FLUID INCLUSIONS ON ESTIMATION OF DEFORMATION CONDITION AND ORIGIN OF THE ZAGROS OROGEN THRUST SHEETS IN THE BAKHTYARI AREA. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 18(2), 181-194. SID. https://sid.ir/paper/3975/en

Vancouver: Copy

NEMATI M., YASSAGHI A., KAMALI M.R.. APPLICATION OF QUARTZ AND CALCITE MICROSTRUCTURES AND FLUID INCLUSIONS ON ESTIMATION OF DEFORMATION CONDITION AND ORIGIN OF THE ZAGROS OROGEN THRUST SHEETS IN THE BAKHTYARI AREA. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2010;18(2):181-194. Available from: https://sid.ir/paper/3975/en

IEEE: Copy

M. NEMATI, A. YASSAGHI, and M.R. KAMALI, “APPLICATION OF QUARTZ AND CALCITE MICROSTRUCTURES AND FLUID INCLUSIONS ON ESTIMATION OF DEFORMATION CONDITION AND ORIGIN OF THE ZAGROS OROGEN THRUST SHEETS IN THE BAKHTYARI AREA,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 18, no. 2, pp. 181–194, 2010, [Online]. Available: https://sid.ir/paper/3975/en

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