Ferrosilicide as indicator of mineral composition of the Earth mantle?

• Дата: 2020
• Автори: Lukin, A.E., Shestopalov, V.M.
• Формат: Стаття
• Мова: rus
• Опубліковано: Subbotin Institute of Geophysics of the NAS of Ukraine 2020
• Теми: the Earth mantle; metals-sphere; ferrosilicide; diapirs of intermetallic silicides; мантия Земли; металлосфера; силицид железа; диапиры интерметаллических силицидов; мантія Землі; металосфера; силіцид заліза; діапіри інтерметалевих силіцидів
• Онлайн доступ: https://journals.uran.ua/geofizicheskiy/article/view/215069
• Назва журналу: Geofizicheskiy Zhurnal

The creation of plausible model of the Earth mantle is the urgent problem. Now there are different its models. According to canonical model of the Earth mantle it is rock oxide-silicate cover (the majority of geologists and geophysicists have adhered to the idea of iron core and rock mantle of oxide-silicate by mineral and aluminum-silicon-oxygen by chemical composition). The model suggested by V.N. Larin differs fundamentally from the canonical model. It is based on assumptions of primordially hydride Earth. According to his proposal the main volume of the Earth mantle is represented by metals-sphere to be consisted of alloys and inter-metallic substances on the base of Si, Mg, Fe with additions of various elements (carbon, different metals). Metals-sphere had been formed as a result of hydrogen blowing bearing pulsed-permanent mode. This allow to suggest more complicated not static but dynamic interrelation of segments of oxide-silicate Earth mantle and metals-sphere with initially reducted fluids. Their oxidation and geochemical differentiation occurred (and is occurring) as through-mantle percolation to be caused by the Earth deep degassing. In this connection the inclusions of native oxyphyle metals and their alloys, intermetallides, silicides and carbides have assumed great significance as the indicators of extra-reductive waterless (super)deep fluids.Among them one ought to mention ferrosilicides — the direct guide to metals-sphere derivatives. Detection and mapping of intermetallic-silicide diapirs is of fundamental importance for approach to the problem of development to commercial level of endogenous hydrogen sources.