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Paper Information

Journal:   IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY   SPRING-SUMMER 2006 , Volume 13 , Number 1; Page(s) 113 To 128.
 
Paper: 

FIBROLITE FORMATION IN THE CHAHGHAND GABBRODIORITE CONTACT AUREOLE, NE NEYRIZ, SOUTHERN IRAN

 
 
Author(s):  MOAZEN M.*, HOMAM S.M., GHADERI ZAFREH A.
 
* DEPARTMENT OF GEOLOGY, UNIVERSITY OF TABRIZ, 51669, TABRIZ, IRAN
 
Abstract: 

Intrusion of the Chahghand gabbrodiorite in regionally metamorphosed rocks of the Sanandaj-Sirjan zone in NE of Neyriz has caused contact metamorphism. A variety of pelitic hornfelses are formed as a result of thermal metamorphism. Spatial distribution of minerals in the Chahghand aureole defines three mineralogical zones namely cordierite, andalusite and sillimanite zones. Study of metamorphic reactions and phase relations indicate a pressure of 2.5 to 3.5 kbar and temperature of 500-600 oC and ~700 oC for the andalusite and the sillimanite zones respectively. Apart from crystallization of prismatic sillimanite in the sillimanite zone, fibrolite is formed in the other zones. It seems that cation leaching and deformation were the major processes in the formation of fibrolite in the Chahghand aureole. Regarding appearance of fibrolite in altered rocks far from the igneous contact, fibrolite is not crystallized within the sillimanite stability field, but it may has crystallized at lower temperatures. Therefore considering fibrolite in the rocks equivalent to sillimanite existence and estimated pressure and temperature on this basis, at least the altered rocks within the thermal aureoles is fraught with some problems.

 
Keyword(s): CONTACT METAMORPHISM, CHAHGHAND, NEYRIZ, PELITIC HORNFELS, FIBROLITE
 
 
References: 
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Cite:
APA: Copy

MOAZEN, M., & HOMAM, S., & GHADERI ZAFREH, A. (2006). FIBROLITE FORMATION IN THE CHAHGHAND GABBRODIORITE CONTACT AUREOLE, NE NEYRIZ, SOUTHERN IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 13(1), 113-128. https://www.sid.ir/en/journal/ViewPaper.aspx?id=101037



Vancouver: Copy

MOAZEN M., HOMAM S.M., GHADERI ZAFREH A.. FIBROLITE FORMATION IN THE CHAHGHAND GABBRODIORITE CONTACT AUREOLE, NE NEYRIZ, SOUTHERN IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY. 2006 [cited 2021April11];13(1):113-128. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=101037



IEEE: Copy

MOAZEN, M., HOMAM, S., GHADERI ZAFREH, A., 2006. FIBROLITE FORMATION IN THE CHAHGHAND GABBRODIORITE CONTACT AUREOLE, NE NEYRIZ, SOUTHERN IRAN. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, [online] 13(1), pp.113-128. Available at: <https://www.sid.ir/en/journal/ViewPaper.aspx?id=101037>.



 
 
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