THE PRELIMINARY STUDY OF MAGNETIC SUSCEPTIBILITY (MS) IN THE PIU TON OF SHAH-KUH GRANITOID; SOUTH OF BIRJAND

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ESMAEILI DARYOUSH; VAKILI F.; GHALAMGHASH J.

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Journal: GEOSCIENCES Year:2005 | Volume:14 | Issue:54 Page(s): 10-19

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Title

THE PRELIMINARY STUDY OF MAGNETIC SUSCEPTIBILITY (MS) IN THE PIU TON OF SHAH-KUH GRANITOID; SOUTH OF BIRJAND

Author(s)

ESMAEILI DARYOUSH | VAKILI F. | GHALAMGHASH J. | Issue Writer Certificate

Keywords

ANISOTROPY OF MAGNETIC SUSCEPTIBILITY (AMS)Q4

MAGNETIC FABRICQ4

SHAH- KUH GRANITEQ4

SOUTH OF BIRJANDQ4

Abstract

The measurement of anisotropy of magnetic susceptibility is a suitable technique for quantifying the MAGNETIC FABRIC of a pluton using cores with 25 mm diameter and 50 to 100 mm length. The origin of MAGNETIC FABRICs in granites is mainly described in terms of orientation of crystals, which occurred during defonnation of cooling magma before its complete crystallisation.In this paper, principles of anisotropy of magnetic susceptibility (AMS) and its applications in determination of MAGNETIC FABRICs of Shah-Kuh is presented. The magnitude of magnetic susceptibility in different units of this pluton ranges between 79 to 2896µ SI. These values, as well as Fe-content in different specimens, indicate that minerals responsible for anisotropy of magnetic susceptibility are mainly magnetite, hornblende and biotite, in lesser significance. Accordingly, Shah-Kuh granite, except its greisenic granite and leucocratic microgranite, could be classified as ferromagnetic granite. This conclusion confirms the earlier petrological studies, which classified Shah-Kuh granite as an I- type granites. The presence of tourmaline in the greisenic granite and leucocratic microgranite results in an inverse MAGNETIC FABRIC. Such rocks, due to their inverse MAGNETIC FABRIC, need more detail AMS study. Nearly vertical magnetic foliation, observed in the some specimens, probably represents their primary location in the wall of pluton. Specimens with vertical magnetic lineations, from granodiorites adjacent to of Deh- Margh village, may be evidence of magma feeder zone.

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References

PETROLOGIC DIVERSITY AND K-AR DATINGS OF SHAH KUH PLUTON (SOUTH OF BIRJAND)

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APA: Copy

ESMAEILI, DARYOUSH, VAKILI, F., & GHALAMGHASH, J.. (2005). THE PRELIMINARY STUDY OF MAGNETIC SUSCEPTIBILITY (MS) IN THE PIU TON OF SHAH-KUH GRANITOID; SOUTH OF BIRJAND. GEOSCIENCES, 14(54), 10-19. SID. https://sid.ir/paper/31675/en

Vancouver: Copy

ESMAEILI DARYOUSH, VAKILI F., GHALAMGHASH J.. THE PRELIMINARY STUDY OF MAGNETIC SUSCEPTIBILITY (MS) IN THE PIU TON OF SHAH-KUH GRANITOID; SOUTH OF BIRJAND. GEOSCIENCES[Internet]. 2005;14(54):10-19. Available from: https://sid.ir/paper/31675/en

IEEE: Copy

DARYOUSH ESMAEILI, F. VAKILI, and J. GHALAMGHASH, “THE PRELIMINARY STUDY OF MAGNETIC SUSCEPTIBILITY (MS) IN THE PIU TON OF SHAH-KUH GRANITOID; SOUTH OF BIRJAND,” GEOSCIENCES, vol. 14, no. 54, pp. 10–19, 2005, [Online]. Available: https://sid.ir/paper/31675/en

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