نتایج جستجو برای: phyllite

تعداد نتایج: 124  

Journal: :Canadian Journal of Earth Sciences 2023

The Amer Belt, hosting eleven informal formations of the supergroup, is proposed as type area for four regional Paleoproterozoic sequences (Ps1–Ps4) in central Rae Craton, western Churchill Province. ca. 1.9–1.865 Ga Snowbird orogeny (D P1 ) affected only Ps1–Ps3, whereas 1.87–1.81 Hudsonian P2 all four. Sequence Ps1 Ayagaq Lake formation (<2.3 quartzite) initiates schistose basal polymict o...

The mineralogical composition of soils formed on phyllite and alluvium as well as examination of their mineral weathering characteristics should provide an insight into the stage of weathering. Three soil profiles from mountain, plain and low lands were selected. Based on XRD analysis, clay fractions were dominated by chlorite–vermiculite, vermiculite, HIV, illite, mica–vermiculite or mica-smec...

Ansari, Mostafa, Etemadi, Abbas, Hafezi Moghaddas, Hamid, Heydarian Shahri, Mohammad reza,

Sangan iron mine with skarn type genesis is located in NE Iran (Khorasan Razavi Province), in the Central Iran zone and NE of Lut Block sub-zone. The Senjedak-III prospect area is one of the six eastern anomalies of Sangan iron mine that encompasses eastern terminal of Khaf- Kashmar- Bardaskan volcano-plutonic belt. The geology of this area consists of a series of igneous (dykes and intrusive b...

Bayat, Sima, Didar, Pejvak, Jahangiri, Ahmad, Siahcheshm, Kamal,

The Malayer-Boroujerd-Shazand district (approximately 70 km long) is located in the Sanandaj-Sirjan zone with NW-SE trending, and consist mainly of hornfels, schist, phyllite, migmatite, granite and granodiorite which contain numerous pegmatite and aplitic dykes. Among these rocks, granodiorite, hornfels and schist are main host rocks for quartz, feldspar, muscovite and tourmaline bearing pegma...

ابراهیمی, خسرو , مظلومی, علیرضا , همام , سید مسعود , گرمابی, نازنین ,

Shelgerd area is located south of Mashhad, N.E of Iran, within Binalud Structural Zone. This region is affected by regional metamorphism, slate and phylite are the main metamorphic rocks of the area. Teriassic slate, phyllite, sandstone and Jurassic conglomerates crop out parallel to Sang bast- Shandize fault. Mineralization occurred as vein type, with trend of N65E to N50W with 75 degrees to t...

J. Izadyar

Late Neoproterozoic-Early Cambrian schists have been occurred in southwest of Zanjan city from the Soltanieh belt. The Soltanieh belt in northwest of Iran is uplifted basement of Precambrian-Paleozoic in main central Iran zone and includes outcrops of Precambrian, Paleozoic and Mesozoic Formations. Late Neoproterozoic-Early Cambrian schists, the oldest stratigraphy unit in the region, consist o...

شیبی, مریم , صادقیان, محمود , پاشاپور, علی ,

Aligoodarz granitoidic plutons (Gole -zard and Darreh -bagh) with Middle Jurassic ages are intruded into low grade regional metamorphic rocks (slate and phyllite) and caused aureole of low to medium grade metamorphic rocks (albite-epidote hornfelse facies). Based on precise field, petrographic and geochemistry investigations, the granites belong to the S- type and their composition range from g...

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