Geochemistry International最新文献

{"title":"Application of ICP-MS for Clarification of the Elemental Composition of Geological Reference Materials and Certification of Candidate Reference Materials","authors":"I. V. Nikolaeva,&nbsp;S. V. Palesskiy,&nbsp;A. S. Shaibalova","doi":"10.1134/S0016702924700691","DOIUrl":"10.1134/S0016702924700691","url":null,"abstract":"<p>The contents of 25 elements were established in prospective reference materials, black shales SChS-1A and SLg-1A, using a developed analysis technique based on fusing samples with lithium metaborate and determining elements by external calibration with an internal standard on an ELEMENT high-resolution mass spectrometer. The passport characteristics of Russian reference materials of magmatic and sedimentary rocks SG-3, SGD-2A, ST-2A, SI-2, and BIL-1 and technical standards ZUK-1 and ZUA-1 have been clarified. New data of rare-earth elements were obtained for SI-2 and ZUA-1, which were missing during certification. Based on the inductively coupled mass-spectrometry analysis of standards SG-3 and SI-2 from 2005 to 2024, their applicability now has been confirmed. The new obtained ICP-MS results make it possible to expand the number of certified parameters of reference materials and clarify their results and can be used in analytical practice.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 11","pages":"1219 - 1226"},"PeriodicalIF":0.7,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemical Signature of Basalts of the MAR Rift Valley at 20°31′ N: Origin Conditions of the Anomalous Volcanic Center of Puy des Folles in the Axial Zone of the Mid-Atlantic Ridge","authors":"S. A. Silantyev,&nbsp;A. I. Buikin,&nbsp;A. A. Gurenko,&nbsp;A. V. Chugaev,&nbsp;V. V. Shabykova,&nbsp;A. R. Tskhovrebova,&nbsp;V. E. Beltenev,&nbsp;A. S. Bich","doi":"10.1134/S0016702924700629","DOIUrl":"10.1134/S0016702924700629","url":null,"abstract":"<p>The results of a study of chilled glasses sampled during the 45th cruise of the R/V <i>Professor Logachev</i> at the top of the submarine volcano Puy des Folles are presented. The Puy des Folles volcano is located in the axial part of the rift valley of the Mid-Atlantic Ridge (MAR) at 20°31′ N. Unlike typical volcanic axial highs which usually does not exceed several hundred meters the summit of the Puy des Folles volcano is located a depth of 1950 m and rises 1800 m above the bottom of the rift valley. The data on geochemistry and isotope composition of chilled glasses examined allow us to come to a number of conclusions that expanded existing ideas about magmatic and tectonic processes conducted in the rift valley of the slow spreading ridges. Chilled glasses sampled at the top of the Puy des Folles volcano are originated from a very depleted melt formed by partial melting of the DM reservoir. Puy des Folles volcano was formed as result of the activity of a long-lived magma chamber located below the rift valley axis. It is possible that, in addition to the DM reservoir, a mantle source enriched in incompatible elements may have participated in the formation of the parental melts for the studied chilled glasses. A weak geochemical signal of contamination of the parental melt with a hydrothermal component in chilled glasses was established. Signs of stagnation in the spreading of the oceanic crust in the rift valley segment studied in this work have been established.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 11","pages":"1111 - 1122"},"PeriodicalIF":0.7,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924700629.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to: Cryolite as a Reference Mineral of Rare Metal Mineralization: An Experimental Study","authors":"A. A. Rusak,&nbsp;T. I. Shchekina,&nbsp;N. G. Zinovieva,&nbsp;A. Y. Bychkov,&nbsp;O. A. Lukanin","doi":"10.1134/S0016702924190030","DOIUrl":"10.1134/S0016702924190030","url":null,"abstract":"","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1108 - 1108"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924190030.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trace Elements and Organic Carbon in Benthic Organisms and Bottom Sediments of the East-Siberian Sea","authors":"L. L. Demina,&nbsp;S. V. Galkin,&nbsp;A. S. Solomatina","doi":"10.1134/S0016702924700563","DOIUrl":"10.1134/S0016702924700563","url":null,"abstract":"<p>First data on the concentrations of a number of trace elements and carbon (organic and carbonate) in the components of the bottom ecosystem of the East Siberian Sea have been obtained. The distribution of a large group of trace elements (Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Mo, Ag, Ba, Tl, Pb, Bi, Th and U) in mass taxa of benthic organisms, including bivalvia <i>Portlandia arctica</i>; crustacean Isopod (<i>Saduria sibirica, Saduria sabini),</i> echinoderms Ophiuroidea <i>Ophiocten sericeum,</i> and Holothuroidea <i>Myriotrochus rinkii,</i> was studied. The role of abiotic and biotic factors in the accumulation of chemical elements in benthic organisms was estimated. The lithological and geochemical characteristics of host bottom sediments, primarily, the organic carbon content and the grain-size composition, reflect the influence of abiotic factors. The biotic factor is responsible for the geochemical properties of trace elements, the level of organic carbon in organisms, and their feeding type. For the first time, a comparative assessment of the levels of organic carbon accumulation in mass taxa and host bottom sediments was made, and an important sedimentological function of detritophages and deposit feeders organisms was shown.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1077 - 1095"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous Calculation of Chemical and Isotope Equilibria Using the GEOCHEQ_Isotope Software: Iron Isotopes","authors":"V. B. Polyakov,&nbsp;M. V. Mironenko,&nbsp;M. V. Alenina","doi":"10.1134/S0016702924700538","DOIUrl":"10.1134/S0016702924700538","url":null,"abstract":"<p>The <i>GEOCHEQ_Isotope</i> software package, previously developed to calculate chemical and isotopic equilibria of carbon and oxygen in hydrothermal and hydrogeochemical systems by minimizing Gibbs energy, was extended to the simultaneous calculation of isotopic effects of carbon, oxygen, and iron (the main objective of the study). As for carbon and oxygen, the β-factor formalism was used to develop algorithms and a database for the calculation of iron isotopic effects. According to the developed algorithm, the Gibbs energy <i>G</i>*(<i>P</i>, <i>T</i>) of formation of a rare isotopologue was calculated through the Gibbs energy of formation of the main isotopologue taking into account the value of the ⁵⁶Fe/⁵⁴Fe β-factor of this substance and the mass ratio of ⁵⁴Fe and ⁵⁶Fe isotopes. The approximation of ideal isotope mixture was used. The temperature dependence of the β-factor is unified in the form of a third-order polynomial by inverse even degrees of absolute temperature. Based on a critical analysis of currently available data on equilibrium isotopic factors obtained by different methods (elastic and inelastic γ-resonance scattering, isotope exchange experiments, and ab-initio calculations), the main result was obtained: for the first time, internally consistent database on iron β-factors of minerals and water complexes was developed. To develop the database, minerals and aqueous complexes for which the estimates of the equilibrium fractionation factors of iron isotopes obtained by different methods exist and consistent within the error of the methods have been identified: metallic iron (α-Fe), hematite, magnetite, siderite, pyrite, and the aqueous complexes <span>({text{Fe(III)(}}{{{text{H}}}_{{text{2}}}}{text{O)}}_{6}^{{3 + }})</span> and <span>({text{Fe(III)(}}{{{text{H}}}_{{text{2}}}}{text{O)}}_{6}^{{2 + }})</span>. The values of the iron β-factors for these minerals and aqueous complexes, accepted as reference ones, formed the “mainstay” of the developed database. Considering that the equilibrium isotopic shifts of iron between minerals and water complexes are estimated much more accurately within the framework of one method rather than the corresponding β-factors, the database was made consistent by linking the ln β values for minerals and water complexes to the reference ln β values. The application of the <i>GEOCHEQ_Isotope</i> software package to the closed carbonaceous hydrothermal system H₂O–CO₂–Fe₂O₃–FeO–CaO (<i>T</i> = 200°C, <i>P</i> = 16–50 bar) has shown the possibility of its use for the calculation of changes in mineral composition and isotopic effects on oxygen, carbon, and iron.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1029 - 1056"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924700538.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to: Trace Element Composition of Discordant Zircon as a Reflection of the Fluid Regime of Paleoproterozoic Granulite Metamorphism (Khapchan Terrane, Anabar Shield)","authors":"S. G. Skublov,&nbsp;N. I. Gusev,&nbsp;L. I. Salimgaraeva,&nbsp;L. Yu. Romanova","doi":"10.1134/S0016702924190042","DOIUrl":"10.1134/S0016702924190042","url":null,"abstract":"","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1109 - 1109"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924190042.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to: Dissolution of Ta–Nb and Nb Minerals in Granitoid Melts","authors":"V. Yu. Chevychelov,&nbsp;A. A. Viryus","doi":"10.1134/S0016702924190029","DOIUrl":"10.1134/S0016702924190029","url":null,"abstract":"","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1107 - 1107"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924190029.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallization of Na- and Cs-Bearing Borosilicate Melts: Results of Raman Spectroscopy","authors":"O. N. Koroleva,&nbsp;L. A. Nevolina,&nbsp;A. P. Krivenko","doi":"10.1134/S001670292470054X","DOIUrl":"10.1134/S001670292470054X","url":null,"abstract":"<p>The structure of borosilicate glass and glass-ceramic materials of two compositions with different Cs/Na ratios was studied using Raman spectroscopy. The materials were synthesized in two different modes. The anionic environment of cesium in the glass and the structural rearrangements of the network during the formation of crystalline phases have been studied. X-ray diffraction patterns of glass-ceramic samples made it possible to determine the only crystalline phase CsBSi₂O₆, the structure of which was not clearly determined. The glass-ceramics of the studied composition can be used to immobilize cesium by incorporating it into the crystalline phases of the CsBSi₂O₆ composition, while sodium is retained in the glassy matrix. These studies showed that the composition of the crystalline phase does not depend on the initial ratio of alkali cations, while the proportion of the ordered and amorphous phases is controlled by the kinetics of the melt cooling process.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1057 - 1064"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal Dynamics of CH4 and CO2 Concentrations in Bog Lake Severnoe","authors":"S. D. Prasolov,&nbsp;S. A. Zabelina,&nbsp;S. I. Klimov,&nbsp;A. V. Chupakov,&nbsp;G. N. Losyuk","doi":"10.1134/S0016702924700575","DOIUrl":"10.1134/S0016702924700575","url":null,"abstract":"<p>Bog and lake ecosystems of the boreal region are recognized as important parts of the global biogeochemical carbon cycle. At the same time, many aspects of the gas regime dynamics of bog lakes remain understudied. The paper presents data on the seasonal dynamics of dissolved CH₄ and CO₂ concentrations in the bog lake located in the ridge-lake complex of the Ilassky bog, a typical raised bog in the northern taiga of northwestern Russia, and results of analysis of the seasonal vertical distribution of greenhouse gases in the water column and the dynamics of surface concentrations with increased time resolution. The reasons for and patterns of their variability are considered, including those in relation to the characteristics of the bottom sediments. Concentrations of CH₄ and CO₂ in the water column vary during the year within wide ranges: from 4 to 652 µg/L and from 0.19 to 19 mg/L, respectively. CH₄ concentrations in the surface layer are at approximately the same level from May through August, with values measured in the water (5.9 to 11 µg/L) more than one hundred times higher than the concentrations in equilibrium with the atmosphere (0.04 to 0.05 µg/L), indicating a methane flux to the atmosphere. The CO₂ concentrations decrease throughout the open water period and become lower than the equilibrium concentrations with the atmosphere by the end of August, indicating a change in the flux direction and uptake of CO₂ from the atmosphere. The results showed that, depending on the season, a bog lake can be not only a source but also a sink for atmospheric carbon, 90–99% of which is CO₂ according to literature data.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1096 - 1105"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to: Noble Gases, Carbon and Nitrogen Isotopes in Different Lithologies of Pesyanoe: Irradiation History and Impact Processes on the Aubrite Parent Body","authors":"A. I. Buikin,&nbsp;A. B. Verchovsky,&nbsp;J. Hopp,&nbsp;C. A. Lorenz,&nbsp;E. V. Korochantseva,&nbsp;M. Trieloff,&nbsp;U. Ott","doi":"10.1134/S0016702924190017","DOIUrl":"10.1134/S0016702924190017","url":null,"abstract":"","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"62 10","pages":"1106 - 1106"},"PeriodicalIF":0.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0016702924190017.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}