Geochemistry International最新文献

{"title":"Morphogenetic Abnormalities of Bryobionts in Geochemically Contrasting Conditions of Donbass","authors":"A. I. Safonov,&nbsp;A. S. Alemasova,&nbsp;I. I. Zinicovscaia,&nbsp;K. N. Vergel,&nbsp;N. S. Yushin,&nbsp;A. V. Kravtsova,&nbsp;O. Chaligava","doi":"10.1134/S0016702923100117","DOIUrl":"10.1134/S0016702923100117","url":null,"abstract":"<div><div><p><b>Abstract</b>—The territory of modern central Donbass was considered as an experimental site for the implementation of an ingredient biomonitoring program. Bryophytes were transplanted and exposed in the geolocalities directly influenced by coal mining and processing complexes, metallurgical and chemical industry, ruderal and residential ecotopes. For bryobionts with a wide amplitude of resistance to technogenic pollution (<i>Amblystegium subtile</i> (Hedw.) Schimp., <i>Brachythecium campestre</i> (Muell.Hal.) Bruch et al., <i>Bryum argenteum</i> Hedw., <i>Bryum caespiticium</i> Hedw., <i>Bryum capillare</i> Hedw., <i>Ceratodon purpureus</i> (Hedw.) Brid and <i>Pylaisia polyantha</i> (Hedw.) Schimp.), the following criteria of anthropotolerance were selected: (1) the ability to accumulate elements, (2) the ability to accumulate specific pollutants, (3) structural and functional reactions and manifestation of atypical morphogenesis (teratogenesis) of plant organisms and (4) shifts in the characteristics of the survival strategy of species under conditions of deep transformation of the Donbass landscape systems. Peculiarities in the accumulation of Na, Mg, Al, Si, P, S, Cl, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Rb, Sr, Zr, Mo, Cd, Sb, I, Cs, Ba, La, Ce, Nd, Sm, Eu, Tb, Dy, Yb, Hf, Ta, W, Hg, Pb, Th, U in indicator plants used as seasonal phytotest monitors to assess the pollution of natural environment has been defined. At a radical violation of geochemical cycles in plant life support systems, cases of specific chlorosis and necrosis of point localization, hypo- and hypergenesis and deformation, as well as fasciation, prolification, dystopia, oligomerization of vegetative organs, peculiarities in the development of individual groups of cells in the integumentary, and conformational tissues of the leaf apparatus of bryobionts have been recorded. The revealed abnormalities were used as a phytoindication characteristics when conducting an express analysis of the level of technogenic stress in field diagnostics. The coefficients of biological absorption and technogenic concentration of elements in biosubstrates were calculated when assessing the geochemical contrast of the environment. The difference in the accumulative capacity of bryobionts for individual elements or their associative groups in different ecotopes was defined. The related morphogenetic heterogeneity of the structure and elemental composition of plants is an individual case of compliance with V.I. Vernadsky’s ideas of the concentration, information and environment-forming functions of living matter.</p></div></div>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 10","pages":"1036 - 1047"},"PeriodicalIF":0.8,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71910485","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":"Participation of Small Mammals in the Biogenic Transit of Trace Elements under Chemical Pollution of the Environment","authors":"S. V. Mukhacheva,&nbsp;V. S. Bezel’","doi":"10.1134/S0016702923100099","DOIUrl":"10.1134/S0016702923100099","url":null,"abstract":"<div><div><p><b>Abstract</b>—The paper considers the participation of small mammals (SM) in the migration of essential (Cu, Zn) and toxic (Cd, Pb) trace elements (TEs) in forest ecosystems under conditions of severe industrial pollution of the environment (1990–2000) by a large copper smelter (Middle Urals, Russia) and after a significant reduction of its emissions (2010–2019). The peculiarity of transit food flows (TFF) in the pollution gradient was determined by the composition and abundance of animals of different trophic groups (phytophages, mixophages, zoophages), as well as the specifics of their diet. The reduction of emissions was accompanied by positive changes in the SM communities expressed in an increase in the abundance of some species and structural rearrangements of trophic groups (TG), which led to partial changes in the composition and amount of food consumed, as well as the concentrations of TEs in them. By the end of the observation period in the background zone, the animal-controlled TFFs remained stable for most TEs (Cu, Zn, Cd), and decreased by a factor of 2 for Pb, but not as a result of reduced emissions. At the polluted areas, the TFF value has not changed for Zn, has increased for Cd, and has decreased for Cu and Pb. It was concluded that in the taiga zone the main contribution to the dynamics of biogenic TEs flows in time and space was made by a group of mixophages that dominated in the pollution gradient.</p></div></div>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 10","pages":"1061 - 1073"},"PeriodicalIF":0.8,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71910497","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":"Paleo-Reconstruction of Heavy Metal Accumulation during the Holocene in Coastal Odisha, India","authors":"Uzma Parveen,&nbsp;S. Sreekesh,&nbsp;Sandeep Sarpal","doi":"10.1134/S0016702923130025","DOIUrl":"10.1134/S0016702923130025","url":null,"abstract":"<p>This study evaluates spatial trend and distribution history of selected metals in the complex coastal environment of Odisha, India. The main objective is to analyse metal enrichment and level of contamination in sediment deposits. It is also attempted to evaluate the past depositional environment and prevailing process leading to metal enrichment and contamination. Three sediment cores up to a depth of 10 m were collected from older beach deposit of Chandbali (CB) and paleochannels of Agiviligan (AG) and Kasturikaran (KK) villages located along River Baitarani, coastal Odisha. The study area, to a large extent, is a transition zone of terrestrial and marine sediments. The assessment of metal contamination is based on spatial and down-core variability of selected metals- Al₂O₃, MnO, Cr, Co, Cu, Zn, and Pb against their background values. Contamination is examined using enrichment factor (EF), contamination factor (CF) and geo-accumulation index (I_geo). The study exhibits a complex pattern of metal distribution over space and time. The sediments are enriched and contaminated with MnO, Cr, and Pb not only in the surface layers but also in the deeper layers such as CBL4 (–7.3 m), CBL5 (–7.9 m), CBL6 (–10 m), AGL3 (–6 m), AGL5 (–10 m) and KKL3 (–8 m). Metal enrichment in deeper layers can be associated with the past depositional environment, prevailing processes, geology and geomorphology of the region. In the surface layers, metal contamination can result from recent anthropogenic activities like untreated industrial waste from Ferro-alloys Corporation Ltd. (FACCOR) and domestic waste. There is a decline in contamination levels as we move from inland (CB) to coast (KK). The samples are also analysed for grain size and geochemistry to differentiate between sedimentary layers deposited under distinct depositional environments in the past. The results reveal the existence of humid and dry climatic phases along with oscillating sea levels in the past, influencing metal enrichment and contamination.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 13","pages":"1426 - 1441"},"PeriodicalIF":0.7,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135386612","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":"Evaluation of Late Paleozoic Over-High Maturity Source Rocks in the Erlian Basin and Its Adjacent Areas","authors":"Tiantian Du,&nbsp;Yanxia Wang,&nbsp;Yue Qu,&nbsp;Xuanlong Shan,&nbsp;Yuhang Shang","doi":"10.1134/S0016702923110022","DOIUrl":"10.1134/S0016702923110022","url":null,"abstract":"<p>The evaluation of Paleozoic source rocks during oil and gas exploration is important yet difficult. This study qualitatively and quantitatively evaluated the potential of Late Paleozoic source rocks through organic geochemical analyses of 18 outcrop samples from the Linxi, Zhesi and Benbatu formations in the Erlian Basin and its adjacent areas. The results revealed that Late Paleozoic source rocks are currently in a stage of over-high maturity. The three source rock intervals recorded low organic carbon contents (TOC) and low hydrocarbon generation potential. The abundance of organic matter (OM) was corrected to account for the effects of weathering and to calculate the original carbon content. The original hydrocarbon generation potential was determined using a chemical kinetics method. The average original TOC contents (TOC₀) of the Linxi, Zhesi and Benbatu formations were 0.89, 0.28 and 0.17%, respectively, with average original hydrocarbon generation potentials (S₂₀) of 2.171, 0.939 and 0.409 mg/g, respectively. The original abundance of OM met the standard of an effective source rock, and the mudstone of the Linxi Formation reached the standard of an effective source rock. The results of saturated hydrocarbon gas chromatography (GC) analysis using the Late Paleozoic source rocks in the Erlian Basin and its adjacent areas revealed obvious “bimodal” characteristics, and the main carbon peaks were distributed near C_17–19 and C_23–25. These results suggested that the sources of OM were mainly low-level aquatic organisms, which are able to generate oil and gas. The obvious differences between the residual and original hydrocarbon generation potentials indicated that the Late Paleozoic source rocks generated and discharged hydrocarbons. Notably, the original hydrocarbon generation potential of the Linxi Formation mudstone is high.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 13","pages":"1413 - 1425"},"PeriodicalIF":0.7,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136192396","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":"Hydrogeochemistry and Formation of Low Temperature Geothermal Waters in South Hunan, China","authors":"Min Zhao,&nbsp;Feng Yin,&nbsp;Jiang Xiao,&nbsp;Haibin Chang,&nbsp;Jing Pi,&nbsp;Xin Zhou,&nbsp;Tengfei Yao,&nbsp;Can Wang","doi":"10.1134/S0016702923110113","DOIUrl":"10.1134/S0016702923110113","url":null,"abstract":"<p>The south of Hunan is rich in low temperature geothermal water resources, yet their formation mechanism has not been well investigated. This study focused on the occurrence conditions of geothermal water and estimation the thermal reservoir temperature and the circulation depth of geothermal water in this area. The hydrogeochemical analyses of 23 geothermal water samples are proceeded with the help of Origin, PHREEQC and Aquachem software. The results show that the main hydrochemical type of geothermal water in the study area is HCO₃·SO₄–Ca·Mg and HCO₃–Na. The δD and δ¹⁸O of the geothermal water samples show a linear right-up trend, indicating the geothermal waters were recharged by meteoric water. The mineral saturation index was calculated by PHREEQC, which indicated that the quartz and chalcedony minerals were close to the saturation state. The reservoir temperature range of geothermal water is estimated to be 38–122°C by using a silica (quartz) geothermometer, with an average of 73°C. The geothermal water circulation depth range calculated by the geothermal gradient is 1–4 km, with an average of 2.13 km.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 13","pages":"1382 - 1393"},"PeriodicalIF":0.7,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136193075","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":"Mineral Signatures and Trace and Rare Earth Elements Constraints on the Sources of the Doğanşehir Bauxite Deposit (Malatya-Turkey)","authors":"Hatice Kara","doi":"10.1134/S0016702923110058","DOIUrl":"10.1134/S0016702923110058","url":null,"abstract":"<p>In the Eastern Tauride, one of Turkey’s main tectonic belts, the Permo–Triassic Malatya Metamorphics units crop out. Doğanşehir bauxites occur in lenses and are massive in the carbonates of Malatya Metamorphics. The ore paragenesis consists of diaspore, hematite, gibbsite, anatase and zeolite minerals, indicating that the deposit was formed in vadose environments. The results of the geochemical analysis show that Ni, Be, Zr, Cr, Nb, Th and Ta trace elements normalised to the Upper Continental Crust are enriched, while Co, Cu, Rb, Sr, Ba, Mo, Sn and Pb elements are depleted during bauxitization. In bauxite samples, ΣREE is 664–1047 ppm, ∑LREE is 547–948 ppm, ∑HREE is 88–112 ppm. Compared with the Tauride-Anatolide region bauxites in Turkey and some important bauxite deposits worldwide, the Doğanşehir bauxites have been geochemically characterised by high ∑REE content. The Ce/Ce* index in the studied bauxite ores, with values ranging between 0.88 and 1.35, reflects the occurrence of weak negative and positive anomalies during chemical weathering processes. The weathered material would display these Ce anomalies due to the influence of oxidation on reduction processes. The La/Y ratios in samples of Doğanşehir bauxites indicate that basic conditions were dominated during bauxitization. The bivariate diagrams of log Cr vs log Ni and the triangular diagrams of Zr–Cr–Ga revealed that the bauxite that formed in the region had ultrabasic and basic rocks source. Based on the mineralogical and geochemical data, the sources of Doğanşehir bauxites are from basic to ultrabasic rocks.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 13","pages":"1394 - 1412"},"PeriodicalIF":0.7,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136193065","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":"Geochemistry (TE, REE, Oxygen) of Zircon from Leucogranites of the Belokurikhinsky Massif, Gorny Altai, as Indicator of Formation Conditions","authors":"E. V. Levashova,&nbsp;M. E. Mamykina,&nbsp;S. G. Skublov,&nbsp;O. L. Galankina,&nbsp;Q.-L. Li,&nbsp;X.-H. Li","doi":"10.1134/S001670292311006X","DOIUrl":"10.1134/S001670292311006X","url":null,"abstract":"<p>The present contribution deals with the isotopic-geochemical study (by Electron Probe Microanalysis (EPMA) and Method of Secondary Ion Mass Spectroscopy (SIMS) of zircons from Belokurikhinsky massif leucogranites, which resulted in the determination of two morphological varieties of zircons (zonal and porous). Zonal zircons exhibit low content of trace elements, a “magmatic” type of REE distribution spectra, and geochemical indices consistent with those of magmatic zircons. Anomalously high REE (up to 38 800 ppm), Y (up to 50 700 ppm) and U (up to 24 700 ppm) contents, as well as elevated Hf, P, F, Cl, and water contents (up to 3.5 wt %) were found in porous zircons. They display gently flattened REE distribution spectra with no Ce-anomaly and the persistence of negative Eu-anomaly, as well as geochemical parameters that differ from typical zircons of magmatic origin. The obtained geochemical characteristics of porous zircons reflect the process of enrichment of the magmatic melt with rare and rare earth elements, and indicate a high fluid saturation of the melt. The δ¹⁸О determined value for porous zircons is in the range of 9.22 to 12.54‰, which significantly exceeds a mantle value and seems to be caused by influence of external fluids interacting with sedimentary rocks surrounding leucogranites. The detailed isotopic-geochemical study of zircon samples suggests that their crystallization from leucogranites of a third (final) phase in the evolution of the Belokurikhinsky massif took place from fluid-saturated melt with elevated incompatible element concentrations.</p>","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"61 13","pages":"1323 - 1339"},"PeriodicalIF":0.7,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S001670292311006X.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136192927","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":"An Equation for the Calculation of Saturated Water Contents in Silicate Melts: A New Version","authors":"Ya. Yu. Gnuchev, D. A. Bychkov, E. V. Koptev-Dvornikov","doi":"10.1134/s0016702923090045","DOIUrl":"https://doi.org/10.1134/s0016702923090045","url":null,"abstract":"A set of experimental data compiled from the literature comprises results of 394 quenching experiments that characterize the saturated water content within wide ranges of intensive parameters of silicate systems. Analysis of the main types of published models of water solubility in silicate melt showed that the equation by G. Moore et al. (1998) best describes experimental results. The Moore equation, converted to an exponential form, was recalibrated on an extended set of experimental data, and the new coefficients for this equation are: a = 918; bAl2O3 = – 0.712; bFeO = – 0.749; bNa2O = 0.806; c = 1.087; and d = –11.45. The Moore equation with new coefficients makes it possible to predict the saturated water content in silicate melts accurate to ±1 to ±2 relative % in the range of melt compositions from basalt to rhyolite, pressures from atmospheric to 15 kbar, and temperatures from 550 to 1300°C.","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433476","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":"Determination of the Trace-Element Composition of Black Shale Rocks and Ores. Certified Reference Materials SLg-1 and SChS-1","authors":"O. A. Tyutyunnik, S. N. Nabiullina, I. V. Kubrakova","doi":"10.1134/s0016702923090100","DOIUrl":"https://doi.org/10.1134/s0016702923090100","url":null,"abstract":"","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433477","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":"Composition of Phenocrysts in Lamproites of Gaussberg Volcano, East Antarctica","authors":"N. A. Migdisova, N. M. Sushchevskaya, M. V. Portnyagin, T. A. Shishkina, D. V. Kuzmin, V. G. Batanova","doi":"10.1134/s0016702923090082","DOIUrl":"https://doi.org/10.1134/s0016702923090082","url":null,"abstract":"Abstract—This paper presents numerous new data on the geochemical composition of olivine, clinopyroxene, and leucite phenocrysts, as well as spinel inclusions in olivine and quench glass from lamproites of Gaussberg volcano (East Antarctica). Most of the olivine phenocrysts in the Gaussberg lamproites are high Mg varieties (Fo89–91) with elevated Ni contents (up to 4900 ppm) and high Ni/Co ratios. According to data of about 320 clinopyroxene analyses, two groups of diopsidic phenocrysts have been established. Group I consists mainly of high-Mg varieties (Mg#>80), while group II clinopyroxenes are less magnesian (Mg# 52–80). The main difference between the clinopyroxenes of the two groups is the elevated contents of Al2O3, FeO and reduced TiO2, Cr2O3, and NiO in the compositions of group II compared to group I, as well as different contents of trace elements, which may reflect their crystallization from different types of primary melts. According to the study of ~550 grains of leucite phenocrysts in the Gaussberg lamproites, it was shown that they correspond to the ideal stoichiometry of leucite K[AlSi2O6] and are enriched in Na2O (0.05–0.35 wt %), but depleted in K2O (19.9–20.9 wt %) compared to leucites from lamproites of other provinces. The BaO content reaches 0.3 wt %, SrO –0.04 wt %. The iron content in most leucite phenocrysts varies within 0.7–1.2 wt % Fe2O3, but some grains have the low Fe2O3 contents (<0.5 wt %). In leucite microlites of the groundmass and rims of phenocrysts, the Fe2O3 content can reach 2.4 wt %, which may indicate more oxidized conditions at lava eruption. Based on the study of natural samples, existing experimental data and numerical models, the order and conditions of crystallization of the Gaussberg lamproites were obtained. Crystallization proceeded in the following order: chromian spinel → chromian spinel + olivine → olivine + leucite (± chromian spinel) → olivine + leucite + clinopyroxene (± chromian spinel). The near-liquidus assemblage represented by high-Mg olivine phenocrysts with inclusions of Cr-spinel was formed in the temperature range from 1180 to 1250°C. Further crystallization of the melt with the formation of an association of olivine+leucite+clinopyroxene phenocrysts could occur at pressures below 2 GPa and temperatures of 1070–1180°C, corresponding to the presence of water in the magmatic system. Estimates of the redox conditions of crystallization of lamproites obtained using different oxybarometers vary in a wide range from QFM-0.5 to QFM+2.3. The elevated Ni contents in liquidus olivines of Gaussberg indicate the high nickel contents in the source. It is shown that the formation of ultra-alkaline magmas in the Gaussberg volcano area is likely related to melting of the continental lithosphere, which was heterogeneous and included both the peridotite mantle and hydrous pyroxenite fragments.","PeriodicalId":12781,"journal":{"name":"Geochemistry International","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433480","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}