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Title

COMPOSITIONAL ZONING IN FELDSPARS FROM THE KUH-E DOM INTRUSIVE ROCKS

Pages

  133-146

Abstract

 The alkali FELDSPARs and plagioclases in the KUH-E DOM intrusive rocks show compositionally and microtexturally ZONING structure. The FELDSPAR crystals in the various lithologies such as granite- granodiorite samples, diorite- gabbro samples and relatively high frequency microgranular mafic enclaves existing in the acidic INTRUSION were analyzed using electron microprobe. The results of the microprobe analysis in the acidic, basic- intermediate rocks and enclaves indicated the normal and reverse ZONING in the samples. The chemical compositions of plagioclases ranges from albite (An 9.4) in the rim to labradorite (An: 50.6) in the core for acidic rocks, and from andesine (An: 30.5) in the rim to labradorite (An: 56.4) in the core for the basic- intermediate rocks, and from oligoclase (An: 19.8) to labradorite (An: 66.5) in the enclaves. The frequently of rare elements such as Ba, Sr, Fe and Mg in the FELDSPARs show various and oscillatory patterns. The oscillatory pattern of the major and minor elements from core to rim in the FELDSPAR crystals suggests an effective role of MAGMA MIXING phenomena in forming of the KUH-E DOM INTRUSION.

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    APA: Copy

    SARJOUGHIAN, F., KANANIAN, A., & AHMADIAN, J.. (2014). COMPOSITIONAL ZONING IN FELDSPARS FROM THE KUH-E DOM INTRUSIVE ROCKS. GEOSCIENCES, 24(93), 133-146. SID. https://sid.ir/paper/32063/en

    Vancouver: Copy

    SARJOUGHIAN F., KANANIAN A., AHMADIAN J.. COMPOSITIONAL ZONING IN FELDSPARS FROM THE KUH-E DOM INTRUSIVE ROCKS. GEOSCIENCES[Internet]. 2014;24(93):133-146. Available from: https://sid.ir/paper/32063/en

    IEEE: Copy

    F. SARJOUGHIAN, A. KANANIAN, and J. AHMADIAN, “COMPOSITIONAL ZONING IN FELDSPARS FROM THE KUH-E DOM INTRUSIVE ROCKS,” GEOSCIENCES, vol. 24, no. 93, pp. 133–146, 2014, [Online]. Available: https://sid.ir/paper/32063/en

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