نتایج جستجو برای: peraluminous ratio
تعداد نتایج: 502301 فیلتر نتایج به سال:
Kashmar subvolcanic and plutonic bodies have compositional ranges from quartz gabbro to alkali granite. With exception of several small stock with alkaline Tholeiitic basalts characteristic (minimum amounts of SiO2 and CaO; maximum amount of MgO; high amounts of Na2O and K2O and LOI and high meta-luminous to peraluminous (1.33-2.32)), all rocks have high-k calc-alkaline to shoshonitic, meta-lu...
The S-type granitoid batholith of Shir-Kuh, which is part of central Iran Zone, is located in SW of Yazd and consists of three main granodioritic, monzogranitic and leucogranitic units. The systematic changes in the composition of plagioclase reveal that the granodiorite have been a calcic core plagioclase-rich magma, the monzogranites is a differentiated melt, and the leucogranite is a late re...
Abstract Quartz-diorites, monzogranites and pegmatites are the main rock units in studied area. The occur as zoned pockets within with zonal arrangement: border, wall, intermediate, core zones. wall zone have enrichment of radioactive RREs-bearing minerals. K-feldspar, plagioclase quartz essential minerals, whereas uranothorite, columbite, zircon, xenotime, monazite, sphalerite pyrite accessori...
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