نتایج جستجو برای: leucogranite

تعداد نتایج: 83  

Journal: :South African Journal of Geomatics 2022

The production of land cover maps using supervised classification algorithms is one the most common applications remote sensing. In this study, effectiveness in ASTER data was evaluated Mankweng Area and its environs. false colour composite image generated from combination band 1, 2 3 red, green blue, respectively, used to generate training classes for six types (waterbody, forest, vegetation, ...

1999
C. D. Coath

Zircon and monazite U-(Th)-Pb ion microprobe analysis were performed on the Mazeno Pass pluton and the Jutial pluton, two leucogranite bodies within the Nanga Parbat-Haramosh massif (NPHM), Pakistan Himalaya. Zircon rim ages and monazite ages indicate the Mazeno Pass pluton in southwest NPHM intruded at 1.40 ‹ 0.05 Ma; the Jutial pluton, to the north, similarly yields concordant zircon and mona...

Journal: : 2021

The Balagychan-Sugoi (Omsukchan) riftogeneous depression is described by different authors both as a part of Okhotsk-Chukotka volcanic belt (OCVB) and separate structure. unique Dukat gold silver deposit lot others ore deposits including rare-metal, such Arylah, Lunnoe, Askold, Mechta, Tidid, Krasin, are associated with this All mentioned objects located in the south from point view connected O...

Journal: :Frontiers in Earth Science 2022

Determining the timing of E-W extension across NS-trending rifts in southern Tibet is key to test mechanical models latest evolution collision between India and Asia. We focus on half largest seven main rifts, Yadong-Gulu rift (YGR), which, despite being numerous studies thanks its easy access, still lacks direct time constraints. Using illite K-Ar ages fault gouge from active Yadong normal YGR...

داودیان دهکردی, علیرضا, شبانیان بروجنی, ناهید, عطایی فرد, نسترن ,

Noghan granitoid intrusion is located at the NW of Boin- Miandasht and lies in the Sanandaj-Sirjan structural zone (SSZ). Based on field evidence and petrographic studies, the pluton is considered as two-mica granite that has been strongly affected by deformation and shows a good mylonitic foliation study area. The main minerals in the pluton are quartz, alkali feldspar (microcline and perthite...

اسماعیلی, داریوش, شیبی, مریم ,

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...

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...

2015
Klára Řeháková Alica Chroňáková Václav Krištůfek Barbora Kuchtová Kateřina Čapková Josef Scharfen Petr Čapek Jiří Doležal

Although bacterial assemblages are important components of soils in arid ecosystems, the knowledge about composition, life-strategies, and environmental drivers is still fragmentary, especially in remote high-elevation mountains. We compared the quality and quantity of heterotrophic bacterial assemblages between the rhizosphere of the dominant cushion-forming plant Thylacospermum ceaspitosum an...

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