Geochemistry International

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Relations between the Chemical Composition of Organic Matter in Lacustrine Ecosystems and the Genesis of Their Sapropel
Geochemistry International - Tập 56 - Trang 256-265 - 2018
O. P. Taran, V. V. Boltenkov, N. I. Ermolaeva, E. Yu. Zarubina, I. V. Delii, R. E. Romanov, V. D. Strakhovenko
The paper presents data on sapropels from ten lacustrine systems at the Barabinsk and Kulunda plains in Novosibirsk region. The sapropels are classified according to the type of the biological contribution to their origin and the content of organic matter. The sapropel of lakes Kachkulnya and Barchin, which are rich in organic matter and differ by the type of their origin (macrophytogenic and plan...... hiện toàn bộ
Au and PGE Determination in Geochemical Materials: Experience in Applying Spectrometric Techniques
Geochemistry International - Tập 58 - Trang 377-390 - 2020
I. V. Kubrakova, S. N. Nabiullina, O. A. Tyutyunnik
The paper systematizes methods used to determine trace concentrations (1n to 1000n ppb) of PGE and Au in geochemical materials. The methods involve various techniques of sample preparation for analysis and instrumental determination of elements. Each of the methods is briefly characterized, and the analytical possibilities of the application of the suggested approaches in solving various fundament...... hiện toàn bộ
Prediction of the effects of acid mine drainage on variations in the hydrogeochemical environment at sulfide-bearing ore deposits
Geochemistry International - Tập 53 - Trang 922-936 - 2015
O. A. Limantseva, B. N. Ryzhenko, E. V. Cherkasova
Modeling of interactions in the water–rock–CO2–O2 systems was performed for rocks from different sites within a sulfide-bearing ore deposit A. The physicochemical computer modeling showed that acid mine drainage is controlled by the rates of interaction between the components of the system. The reason for the generation of acid mine drainage is that the dissolution rate of aluminosilicate minerals...... hiện toàn bộ
Chemical composition of bottom sedimentary deposits in lakes in the zone impacted by atmospheric emissions from the severonickel plant
Geochemistry International - Tập 48 - Trang 1148-1153 - 2010
V. A. Dauvalter, M. V. Dauvalter, N. A. Kashulin, S. S. Sandimirov
Realization of the oil-generation potential in the estimated source rocks of the sedimentary basin in the shelf of northeastern Sakhalin: Numerical simulation
Geochemistry International - Tập 49 - Trang 1-12 - 2011
Yu. I. Galushkin, K. A. Sitar, A. V. Kunitsyna
The numerical simulation of the subsidence history and heat flux of sedimentary rocks in the northeastern part of the Sakhalin shelf was applied to evaluate the variation in the level of catagenesis of organic matter and the realization of the hydrocarbon potential in the course of subsidence of major sedimentary formations in the Sakhalin 5 Kaigan-Vasyukan area. Our simulations demonstrate that, ...... hiện toàn bộ
Diamond in the Oceanic Lithosphere. Volcanic Diamonds and Diamonds in Ophiolites
Geochemistry International - Tập 59 - Trang 1-11 - 2021
E. M. Galimov, F. V. Kaminsky
Diamonds were lately identified in chromitites from ophiolites and in volcanic rocks. Although the tectonic settings of diamonds found in these rocks are different, the diamonds are identical in small size, cuboctahedral habit, sets of minor admixture elements, and isotopic characteristics. A model is suggested for their formation during various stages of a single evolutionary cycle of the oceanic...... hiện toàn bộ
Molybdenum Isotopes Behavior in the Dolomite-Terra Rossa Weathering System
Geochemistry International - - 2022
Yi Xiao, Shaofa Xu, Tingting Guo, Qian Wang, Pengfan Wang
The accumulation of Cu, Zn, Cd, and Pb in the aquatic biomass of sulphide tailing ponds
Geochemistry International - Tập 46 Số 9 - Trang 897-911 - 2008
Elena I. Khozhina, Barbara L. Sherriff
Effect of Thermal State on the Mantle Composition and Core Sizes of the Moon
Geochemistry International - Tập 57 - Trang 605-620 - 2019
O. L. Kuskov, E. V. Kronrod, V. A. Kronrod
Based on the joint inversion of seismic and gravity data in combination with phase equilibrium calculations within the Na2O–TiO2–CaO–FeO–MgO–Al2O3–SiO2 system using the method of Gibbs free energy minimization, we estimated the influence of the thermal state on the model chemical composition of the lunar mantle and the size of the Fe–S lunar core. Models based on the Apollo seismic data and mass a...... hiện toàn bộ
Geochemistry and Formation Conditions of Milk-White Quartz Veins in the Maksyutovo Metamorphic Complex, Southern Urals
Geochemistry International - Tập 60 - Trang 1122-1135 - 2022
M. A. Korekina, V. P. Lyutoev, D. A. Artemyev, M. V. Shtenberg
Milk-white vein quartz from the Novotroitskoe deposit was studied using inductively coupled plasma atomic emission spectrometry of bulk samples (ICP-OES), grain laser ablation (LA-ICP-MS), electron paramagnetic resonance (EPR) spectroscopy, (IR), and Fourier-transform infrared (FTIR) spectroscopy; and microthermometric data were acquired on the fluid inclusions hosted in this quartz. It is shown t...... hiện toàn bộ
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