Application of anisotropy of magnetic susceptibility (AMS) method in evaluation of the degree and style of alteration at Challu granitoidic pluton (South of Damghan)

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SHEIBI MARYAM; Majidi parvin

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Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2017 | Volume:3 | Issue:1 Page(s): 51-63

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Title

Application of anisotropy of magnetic susceptibility (AMS) method in evaluation of the degree and style of alteration at Challu granitoidic pluton (South of Damghan)

Author(s)

SHEIBI MARYAM | Majidi parvin | Issue Writer Certificate

Keywords

Magnetic Susceptibility

Hydrothermal Alteration

Granitoid

Challu

Damghan

Abstract

Challu Granitoid pluton is located in southeast of Damghan and northern part of central Iranian structural zone. Intrusion of the pluton into volcanic and volcanic-sedimentary rocks and the resultant hydrothermal fluids has caused alteration and Fe mineralization. Generally, two different phases of propylitic and argillic alterations are identified in the studied pluton. Magnetic Susceptibility of fresh and altered rocks at the Challu Granitoidic pluton is measured by magnetic fabric technique. The average measured Magnetic Susceptibility has been obtained about 28872± 3410 μ SI for monzodiorite and 21487 ± 3916 μ SI for quartzdiorite. Circulation of hydrothermal fluids throughout the intrusive body has caused the main mineral compositions variation and changed the magnetic properties of minerals as the average measured Magnetic Susceptibility for the above rocks has, respectively, been reduced to 25117± 988 μ SI and 6262± 1577 μ SI, due to propylitic and argillic alteration. Different kinds of opaque minerals in the pluton have also been identifined by thermomagnetic curves as Magnetic Susceptibility changes with temperature. These results show how magnitude of Magnetic Susceptibility decreases during alteration due to removal or reducing in the size of magnetite or its convertion to hematite.

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APA: Copy

SHEIBI, MARYAM, & Majidi, parvin. (2017). Application of anisotropy of magnetic susceptibility (AMS) method in evaluation of the degree and style of alteration at Challu granitoidic pluton (South of Damghan). JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 3(1 ), 51-63. SID. https://sid.ir/paper/268602/en

Vancouver: Copy

SHEIBI MARYAM, Majidi parvin. Application of anisotropy of magnetic susceptibility (AMS) method in evaluation of the degree and style of alteration at Challu granitoidic pluton (South of Damghan). JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2017;3(1 ):51-63. Available from: https://sid.ir/paper/268602/en

IEEE: Copy

MARYAM SHEIBI, and parvin Majidi, “Application of anisotropy of magnetic susceptibility (AMS) method in evaluation of the degree and style of alteration at Challu granitoidic pluton (South of Damghan),” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 3, no. 1 , pp. 51–63, 2017, [Online]. Available: https://sid.ir/paper/268602/en

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