نتایج جستجو برای: tonalite

تعداد نتایج: 190  

طباطبایی منش, سید محسن, عباسی دهقی, سولماز, ایران نژادی, محمدرضا ,

The Nabar plutonic rocks is located in the northwest of Isfahan and in the Urumieh-Dokhtar magmatic belt. Based on the petrologic studies, the Nabar complex is composed of gabbro, gabbro-diorite, diorite, quartz diorite, tonalite and quartz monzonite. Mineral chemistry shows that pyroxenes are Na-poor in composition and are classified as clinopyroxenes and orthopyroxenes which are diopside and ...

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Khezr-Abad pluton is cropped out in North-West of Taft. This granitoid seems to be younger than the surrounding metamorphosed rocks, particularly the lower cretaceous limestones and probably is implaced during Oligo-Miocene. The most volumetric abundances of the igneous rocks are: granodiorite, granite, quartzmonzo-diorite, quartz-diorite, and in a lesser amount tonalite, quartz-syenite and ...

Journal: :journal of sciences, islamic republic of iran 2003
m. arvin

the lower to middle miocene chenar granitoid stock, a part of central iranian volcanic belt, is intruded into eocene volcano-sedimentary complex in northwestern kerman in south central iran. the chenar granitoid stock consists mainly of coarse to medium grain granodiorite and monzogranite with subordinate tonalite and syenogranite. alkali granites as aplitic veins and quartz dioritic dykes freq...

2003
S. E. Shaw

The Peninsular Ranges batholith of southern California and Baja California, México, is well recognized as a prime example of an I-type Cretaceous batholith. Often overlooked, however, is a volumetrically signiÞ cant amount of pre-Cretaceous gneissic granite in the axial zone of the batholith. New U-Pb zircon age data conÞ rm that the metaluminous and peraluminous plutonic bodies were emplaced d...

جمشیدی بدر, محبوبه, صالحی, زهرا, مسعودی, فریبرز,

Dodehak granitoid stock with tonalite to granodiorite compos ition is exposed south of Dodehak vi llage, north of Ab-e-Gann (Mahalat) in Urumieh-Dorhtar volcanic belt of Iran. Based on petrography and point analysis (EPMA). plagioclase crystals show nonnal zoning with graph ic tex.ture is present. Samples from SE of the intrus ion are different and myrmekite texture is present in the rocks...

Ghorbani, , Hajialioghli, , Moazzen, ,

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...

Journal: :Minerals 2022

Archean supracrustal rocks from the Qingyuan area of northern Liaoning terrane, North China Craton, occur as enclaves or rafts various scales within tonalite–trondhjemite–granodiorite (TTG) domes. They were normally subjected to metamorphism at amphibolite facies with locally granulite facies. We collected biotite two-feldspar gneiss Hongtoushan and conducted petrography, mineral chemistry, pha...

Journal: :Earth Sciences Research Journal 2021

At El Chucho creek, located to the west of Valle del Cauca department in Colombia, some hydrothermal alterations affecting Buga Batholith rocks and dykes porphyritic quartz-dioritic tonalitic composition were identified. These lithological units host mineral occurrences pyrite, chalcopyrite, molybdenite that occur disseminated or associated with quartz veinlets. The identified phyllic, propylit...

Journal: :Selcuk University Journal of Engineering, Science and Technology 2023

The Black Stone is composed of several dark‐coloured gravels (9.7‐27 mm) held together by a silver frame in the eastern wall Kaaba (Makkah). It contains long prismatic white crystal (0.64‐1.11 and short black (0.33‐0.85 mm length) an equigranular texture. Six one additional pieces are claimed to be Istanbul Edirne, Turkey. stone Edirne quartz (0.45‐6.57 mm, 47.02 %), plagioclase (0.81‐2.97 38.4...

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