Abstract Neoproterozoic Abu Ghalaga ilmenite-bearing mafic rocks were subjected to geological, petrographical and geochemical studies integrated with mineral chemistry of ilmenite, pyrite magnetite in order deduce their petrogenesis. intrusions hosting the largest ilmenite reserve Egyptian part Arabian-Nubian Shield. Field observations revealed that impound ore, which occurs as interlayer massi...

The peculiarities of the rare-earth elements distribution in surface bottom sediments Gulf Tonkin (South China Sea) are considered. According to results granulometric analysis, mainly represented by pelitic silt, silty pelite, and miktites. REE contents normalized chondrite composition show absence cerium anomaly, presence negative europium anomaly significant fractionation light heavy REE. val...

Abstract Past vegetation and environmental changes the role of climate as well human activities are major interest. The Hyrcanian region with a high number endemic species has poorly known paleoenvironmental history, especially western northern Iran. This study aims to investigate radiocarbon-dated sediment core Kholasht-Kouh Lake (KHL) for recorded between ca. 510 1180 cal yr BP. KHL is locate...

BACKGROUND The misfit layer compound (SmS)1.25 TiS2 has a layered structure which consists on an alternating sequence of one |SmS| bi-layer adopting a NaCl distorted structure and one |TiS2| tri-layer with the Ti atoms plane sandwiched by two sulfur ones and the Ti atoms octahedrally coordinated. Stacking is along the c-axis. Each of these two subsystems has its own 3D lattice and space group, ...

titanium (ti) is a relatively abundant element that has found growing applications in medical science and recently some of ti compounds are introduced as anticancer drugs. in spite of very limited data which exist on the ti metabolism, some proteins might be involved in the mechanism of action of ti. up to our knowledge, there is not any report in the literature concerning binding of ti to apol...

Ti12xScxN alloys were used to investigate the effects of carrier density and the density of states ~DOS! at the Fermi level E f on vibrational modes, phonon anomalies, and superconducting transition temperatures Tc . Single-crystal Ti12xScxN layers, 2000 Å thick, with compositions spanning the entire alloy range (0<x <1), were grown on MgO~001! by ultrahigh vacuum reactive magnetron sputter dep...

Abstract This communication reports novel geochemical and geochronological data of granite from the southeastern part Bastar Craton, Central India. The studied samples are leucocratic in appearance composed quartz, K-feldspar, plagioclase feldspar, biotite decreasing order abundances. Apatite, sphene, zircon occur as accessory minerals. SiO2 Al2O3 content sample varies between 61 69 wt.% 13 15 ...