نتایج جستجو برای: takab
تعداد نتایج: 55 فیلتر نتایج به سال:
Mineralogy and chemical variations of Sulfosalts epithermal deposit Ay-Qalasi (southeast Takab, northwest Iran)
u-pb ages obtained on zircons from the investigated migmatites place new constraints on the evolution of the crustal rocks in the takab area. shrimp u-pb dating of inherited zircon in the melanosome parts of mafic migmatites from the takab complex gives a discordant age with an upper intercept of 2961±72 ma (mswd=0.5) and a lower intercept of 24.2±5.7 ma (mswd=1.7). in the concordia diagram, th...
takab-e afshar in the north – west of iran. it is in a mountainous area near the cities of dandi in zanjan, and takab in west azerbaijan, lies a complex of historical and natural properties among which stands the world heritage properties of takht-e soleyman with all its features. the present protective buffers for this site have been defined without considering the natural and cultural landsca...
A Sociological Study of Teachers’ Social Participation and Factors Affecting it H. Shiri, Ph.D. [1] M.R. Nasiri [2] Social participation, as a voluntary, conscious, and collective process with definite goals, plays a key role in social development. In this article, an attempt was made to describe teachers’ social participation and identify social and background variables affecting it th...
U-Pb ages obtained on zircons from the investigated migmatites place new constraints on the evolution of the crustal rocks in the Takab area. SHRIMP U-Pb dating of inherited zircon in the melanosome parts of mafic migmatites from the Takab complex gives a discordant age with an upper intercept of 2961±72 Ma (MSWD=0.5) and a lower intercept of 24.2±5.7 Ma (MSWD=1.7). In the concordia diagram, th...
The Precambrian Takab complex consists of various metamorphic rocks including metabasites, metaultramafic rocks, calc-silicates and marbles which are metamorphosed under green schist to granulite facies. The pick metamorphic rocks are retrogressively metamorphosed during crustal exhumation related to pressure and temperature decreasing as well as H2O-rich fluid infiltrations. Retrograde metamor...
soursat metamorphic complex (smc) in west of takab city is one of the polyphase metamorphic terrenes in northern sanandaj-sirjan metamorphic belt of iran. the smc composed mainly of metasedimentary rocks associated with granitic intrusions. based on metamorphic rocks, two metamorphic phases could be separate in the complex. m1 is representative of regional metamorphisms which varies from greens...
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