نتایج جستجو برای: granitic composition
تعداد نتایج: 261167 فیلتر نتایج به سال:
This paper aims to study the geochemical characteristics of shale of Disang group of Eocene age. Geochemical study and the data reported indicate that Shales are deposited under the marine condition. Tectonic setting was active continental margin to passive continental margin and sediments were derived from volcanic and/or granitic source area. Study reveals that Source-rating of studied shale ...
Abstract In granitic regions, water salinity typically ranges from 30 to 40 mg L −1 at the surface and 300 500 for groundwater. Technogenic activity in Oaxaca has altered concentration chemical composition, which explains occurrence of salinization processes contamination natural waters. To determine physical–chemical composition Atoyac-Verde river, fifty-two samples were collected tributaries ...
Abstract Granitic rock is considered one of the most important economic materials used as building materials, ornamental stones, and other purposes. According to previous radiological studies conducted on these granites, it was found that activity concentrations 238 U, 232 Th 40 K granitic rocks are natural well radiation effects not harmful due radioactivity examined granites so can be exploit...
The geochemical signatures like discordant variation of major and trace elements among felsic-intermediate and basic rocks and mafic enclaves of Malayer region on binary variation plots, decreasing values of FeOt, TiO2, MgO, MnO and CaO accompanied with increasing of SiO2 content from basic to felsic rocks, and decreasing Ni, Cr and Co with increasing SiO2 are considered as indications of mag...
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