Jebale-Barez plutonic complex is composed of granitoid intrusive bodies and is
located in the East and southeastern of Jiroft province of Kerman. The plutonic complex
is composed of granodiorite, quartzdiorite, granite and alkaligranite. Plutonic rocks are
mainly com
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Jebale-Barez plutonic complex is composed of granitoid intrusive bodies and is
located in the East and southeastern of Jiroft province of Kerman. The plutonic complex
is composed of granodiorite, quartzdiorite, granite and alkaligranite. Plutonic rocks are
mainly composed of plagioclase, alkali-feldspar, biotite, amphibole and quartz. Based on
microprobe analysis, plagioclases vary from andesine to labradorite and alkali feldspars
occur as orthoclase. All amphiboles are magmatic and placed in three groups: calcic
amphiboles, iron-rich amphiboles, amphiboles consist of Fe, Mg, Mn. The study of
oxidation and reduction state of their source magma by amphibole chemistry, in dicated
high oxygen fugacity. Therefore, granitoids of Jebale-Barez plutonic complex are I-type
or related to magnetite series and the estimated oxygen fugacity imply oxidation magma
and its formation in convergent plate boundary. On the basis of geo-thermo-barometric
calculations, using Hamarstrom - Zen, Schmidt, Johnson - Rutherford, Smith - Anderson
and Uchida methods, amphiboles have crystallized about 1.54 to 7.87 kbar at the depth
about 18 to 23 km. As emplacement or crystallization temperature of Jebale-Barez
plutonic complex based on the two feldspar thermometer using Anderson method has
been ranges between 550 to 750 ºC and using Putirka method has been achieved between
710 to 830 ºC and based on Ti-in- amphibole thermometer has been ranges between 670
to 735 ºC. In addition, hornblende -plagioclase thermometer shows 653 to 732 °C for
equilibrium of these two minerals
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