نتایج جستجو برای: thermobarometry
تعداد نتایج: 187 فیلتر نتایج به سال:
Sarvian intrusion is located in northeast of Delijan in the Orumieh-Dokhtar magmatic belt. Sarvian pluton consists of acidic and intermediate units and is composed of granite, granodiorite, tonalite and quartz-diorite. Main minerals of the intrusion are plagioclase, amphibole, biotite, quartz and K-feldspar. In this research, based on the EPMA analyses, thermobarometry of the rocks investigated...
The process of migmatitization in the Ghareh Naz has resulted in the formation of various rate of partial melting and eventually the formation of a large spectrum of metatexite and diatexite migmatites. Mineral chemistry studies by EPMA method shows that amphibole composition is magnesio-hastingsite and has a metamorphic origin and feldspar composition is andesine to oligoclase. Effective react...
بخشی از کمپلکس دگرگونی جنوب سیرجان را توده های آمفیبولیتی تشکیل داده است. این توده ها بصورت همیافت با گارنت مسکوویت شیست ها و هورنبلند شیست ها در منطقه دیده می شوند. ترکیب سنگ شناسی آن ها شامل آمفیبول از نوع مگنزیو هورنبلند تا چرماکیت، پلاژیوکلاز سدیک (ab70)، کوارتز و کانی های فرعی اپیدوت، بیوتیت، اسفن و روتیل است. در این تحقیق با استفاده از محتوای ti و zr در کانی های اسفن و روتیل شرایط فشار...
Geothermobarometry equations are based on thermodynamic principles and appear in single or multi-variant functions. The number of variants for a specific composition or reaction usually is reduced into 2 involving temperature (T) and pressure (P). Since most of planned equations have two passive or variant P and T, using these equations should be with special care. It is very effective to use g...
Abstract The composition of clinopyroxene and clinopyroxene-liquid (Cpx-Liq) pairs are frequently used to calculate crystallization/equilibration pressures in igneous systems. While canonical uncertainties often assigned calculated based on fits calibration or test datasets, the sources these (and thus ways reduce them) have not been rigorously assessed. We show that considerable arise from ana...
Do-Chah metamorphic-igneous complex is one of the Iranian crystalline basement complexess which is located in the SE Shahrood in northern edge of Central Iran structural zone. This complex includes a wide compositional range of metamorphic rocks such as metabasite, metapelite, metacarbonate and metapsammite, and meanwhile is host of leucogranite and biotite granite intrusions. Protolith of meta...
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