A NEW VIEW ON THE METAMORPHIC ROCKS OF THE BOROUJERD AREA

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AHMADI KHALAJI A.; TAHMASBI Z.; KESHTGAR SH.

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Paper Information

Journal: JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY) Year:2008 | Volume:4 | Issue:2 Page(s): 71-81

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Title

A NEW VIEW ON THE METAMORPHIC ROCKS OF THE BOROUJERD AREA

Author(s)

AHMADI KHALAJI A. | TAHMASBI Z. | KESHTGAR SH. | Issue Writer Certificate

Keywords

BOROUJERDQ2

HORNFELSQ2

MIGMATITEQ2

METAMORPHISMQ2

SANANDAJ - SIRJAN ZONEQ2

Abstract

The studied area is as a small portion of SANANDAJ - SIRJAN ZONE (SSZ). Metamorphic rocks in this area subdivided to 2 groups on their setting: Regional and Contact. Slate and Phyllite are petrographic facieses of regional METAMORPHISM. This METAMORPHISM has affected a vast area and is of low grad in green schist (Chlorite Zone). The BOROUJERD granitoid massif is elongated and parallels the prevailing schistose in these rocks by the trend of NW-SE. By the injection of it, a contact METAMORPHISM has occurred which can be considered as a pyroxene HORNFELS facies. Contact metamorphic rocks, consisting of spotted schists, HORNFELS-schist, HORNFELSes and MIGMATITEs, are evident only to the north of the pluton, because the southern margin of it is controlled by a fault system parallel to the contact and the granitoid rocks are thrusted onto the metamorphic rocks. Field and microscopy evidence show that MIGMATITEs are injective and occurred by intrusion of granitoid magma into metamorphic rocks.Calculation of garnet-biotite thermometer by all of the average calibrations, account 472° C for equilibrium this two minerals in HORNFELS.

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APA: Copy

AHMADI KHALAJI, A., TAHMASBI, Z., & KESHTGAR, SH.. (2008). A NEW VIEW ON THE METAMORPHIC ROCKS OF THE BOROUJERD AREA. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), 4(2), 71-81. SID. https://sid.ir/paper/127131/en

Vancouver: Copy

AHMADI KHALAJI A., TAHMASBI Z., KESHTGAR SH.. A NEW VIEW ON THE METAMORPHIC ROCKS OF THE BOROUJERD AREA. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY)[Internet]. 2008;4(2):71-81. Available from: https://sid.ir/paper/127131/en

IEEE: Copy

A. AHMADI KHALAJI, Z. TAHMASBI, and SH. KESHTGAR, “A NEW VIEW ON THE METAMORPHIC ROCKS OF THE BOROUJERD AREA,” JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), vol. 4, no. 2, pp. 71–81, 2008, [Online]. Available: https://sid.ir/paper/127131/en

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