Published in Geochemistry International
The review presents summarized information on a new research avenue in biogeochemistry and geochemical ecology: relationships between the microcosm (viruses) and manifestations of animal and human pathologies. Some aspects of the biological action of selenium, zinc, copper and iodine, their influence on the manifestation and course of viral infecti...
Published in Geochemistry International
Abstract—The paper discusses a model of the bombardment of the Earth and the Moon by small bodies when these planets were formed. It is shown that the total ice mass delivered with the bodies to the Earth from the feeding zone of the giant planets and the outer asteroid belt could have been comparable to the total mass of the Earth’s oceans. Object...
Published in Geochemistry International
Abstract—The paper presents an analytical review of studies that discuss issues concerning the geochemistry of organic matter in Jurassic–Cretaceous rocks in the Arctic regions of Western Siberia and genetically related oils, gas condensates, and hydrocarbon gases. The Late Jurassic Bazhenov Formation and the coeval Golchikha (upper part) and Yanov...
Published in Geochemistry International
The contents of Si, Fe, Mn, K, P, V, Cr, Co, Ni, Pb, Cu, Zn, Cd, As, Sn, Mo, Li, Rb, Cs, Sc, Ga, Y, Hf, Ta, Nb, Th, U, Сorg, and clay minerals (HM, CHL, SM) were analyzed in the subcolloid fraction of bottom sediments (BS) from the marine part of the Razdol’naya River marginal filter, which were sampled during average annual (2014) and elevated (ty...
Published in Geochemistry International
Abstract—The dominant rocks in the area between the village of Kovda and township of Zelenoborskii in northern Karelia, Russia, are amphibole–biotite and biotite plagiomigmatites, which develop after amphibolites. These plagiomigmatites contain epidote that replaces the amphibole and biotite and is found in reaction relations with these minerals. T...
Published in Geochemistry International
Abstract—The paper presents results of a physicochemical study of ettringite, natural calcium hydrosulfoaluminate Ca6Al2(SO4)3(OH)12⋅26H2O, from N’Chwaning, Kalahari, South Africa, by X-ray powder diffraction, IR and Raman spectroscopy, thermal analysis, and calorimetry. The thermal transformation of ettringite has been studied using IR and Raman s...
Published in Geochemistry International
This article deals with the results of the study of primary melt inclusions in clinopyroxene megacrysts and phenocrysts from haüyne foidite of SVSl lava flow of the Vulture–San Michele subsyntheme of Vulture Volcano (Italy). The considered rock consists of megacrysts and numerous homogeneous and zoned phenocrysts of clinopyroxene, rare grains of pl...
Published in Geochemistry International
The lithological-facies zonality of the Neo- and Eopleistocene sediments of the Gulf of Mexico is described for the first time. Processing of compiled maps with isopachs using A.B. Ronov’s volumetric method allowed us to calculate the quantitative parameters of sedimentation for distinguished Pleistocene lithologies. It was found that terrigenous s...
Published in Geochemistry International
AbstractThe Early Permian Yuejin Sumu intrusive rocks are located approximately 40 km northwest of Xilinhot City, Inner Mongolia. The magmatic rocks primarily composed of gabbro, diorite, and syenogranite. Through the study of zircon LA-ICP-MS U–Pb geochronology and rock geochemistry, age dates of the three lithologies show that the three formed si...
Published in Geochemistry International
AbstractHanza district is located in the southern part of Urumieh–Dokhtar Metallogenic belt in southeastern Iran. This region includes fourteen significant Cu anomalies associated with porphyry/vein-type copper mineralizations. This research is aimed to examine effective various processing techniques (i.e., univariate statistical methods) in the an...
