Chemical Geology最新文献

{"title":"Holocene–pleistocene provenance transitions in the Cauvery Delta, South India: Evidence from Sr-Nd isotopes","authors":"Malik Zubair Ahmad ,&nbsp;Pramod Singh ,&nbsp;S. Balakrishnan ,&nbsp;Suhail Hussain Sheikh","doi":"10.1016/j.chemgeo.2026.123265","DOIUrl":"10.1016/j.chemgeo.2026.123265","url":null,"abstract":"<div><div>We investigate temporal shifts in sediment provenance through comprehensive ⁸⁷Sr/⁸⁶Sr and εNd₀ analyses of two sediment cores (Uttrangudi and Porayar) from the Cauvery Delta, South India. We assessed the role of weathering intensity and source rock variability and glacial/interglacial climate phases using isotopic signatures. Isotopic data of two cores reveal distinct shifts in provenance between the Late Pleistocene and Holocene periods. Around ∼14 ka BP, the isotopic signatures indicate enhanced contributions from the Dharwar Craton, consistent with more efficient sediment transport from the distant upper catchment when the lower sea level exposed the continental shelf. In contrast, Holocene sediments (upper core sections) reflect a dominant contribution from the Southern Granulite Terrain, driven by intensified Northeast Monsoons. Our data shows that weathering intensity may influence isotopic compositions, with Nd isotopes being particularly sensitive to these post-depositional processes. The Porayar core exhibits an unusual inverse relationship in which finer fractions correspond to less radiogenic εNd₀ values. Our findings underscore the critical influence of source rock variability, Quaternary sea-level fluctuations, and climate-driven weathering intensity on the Sr-Nd isotopic composition of deltaic sediments.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123265"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146015035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallization of REE phases within La-Na-(Ca)-Cl-(F)-C-H-O systems","authors":"Jingui Xu ,&nbsp;Qifa Zhong ,&nbsp;Wei Zhao ,&nbsp;Dongzhou Zhang ,&nbsp;Li Zhou ,&nbsp;Yi Zhou ,&nbsp;Wei Zhang ,&nbsp;Wenge Zhou ,&nbsp;Dawei Fan","doi":"10.1016/j.chemgeo.2026.123255","DOIUrl":"10.1016/j.chemgeo.2026.123255","url":null,"abstract":"<div><div>Carbonatite-hosted rare earth element (REE) deposits provide the world's primary source of REEs. Understanding the relative stability of REE minerals within carbonatite systems is vital for deciphering the genesis of carbonatite-related REE deposits. Yet, experimental data of REE minerals at high pressure and high temperature conditions remain scarce. This study reports a series of crystallization experiments involving REE phases in the La-Na-(Ca)-Cl-(F)-C-H-O systems, conducted between 490 and 750 °C and at pressures of 0.3–0.5 GPa. In the F-free systems, Na-REE carbonate (carbocernaite) coexists with hydroxylbastnäsite and remains stable across the temperature range tested. The addition of Ca leads to their coexistence with calcite and induces a partial substitution 2Ca ↔ Na + La in carbocernaite. Increasing REE concentration promotes the formation of a completely new compound, a Cl-bearing REE carbonate (La₃(CO₃)₄Cl). In contrast, in the F-bearing systems, bastnäsite is the dominant REE phase, with elevated temperatures favoring the crystallization of REE fluoride (fluocerite, LaF₃). The addition of Ca results in bastnäsite coexisting with calcite and fluorite. Notably, Na-REE carbonates do not form in F-bearing runs, even at low F concentrations (∼0.9 wt%). These findings suggest two main implications: first, the formation of LaF₃ at higher temperatures relative to bastnäsite supports field evidence that fluocerite crystallizes at higher temperatures and serves as a precursor to bastnäsite. Second, the absence of Na-REE carbonates in F-bearing experiments may explain why some deposits have no evidence of former existence of Na-REE carbonates.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123255"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trace element signatures of a sediment-derived mobile phase in arc and back-arc basalts: Experimental constraints","authors":"Alexander G. Sokol ,&nbsp;Olga A. Kozmenko ,&nbsp;Alexey N. Kruk ,&nbsp;Sergey Yu. Skuzovatov","doi":"10.1016/j.chemgeo.2026.123254","DOIUrl":"10.1016/j.chemgeo.2026.123254","url":null,"abstract":"<div><div>The mobility of trace elements in a hydrous melt and a supercritical liquid formed from metasediment poor in volatiles (2.2 wt% H₂O and 0.9 wt% CO₂) is studied experimentally with implications for the potential contribution of slab sediment to the formation of arc and back-arc magmas. The experiments are performed by the diamond trap technique with quartz-muscovite-chlorite schist at 3.0 to 7.8 GPa and 750 to 1090 °C. The mineral assemblages (residue) and solute material entrapped in the diamond traps are analyzed by solution-based inductively coupled plasma mass spectrometry (ICP-MS) to investigate the fractionation of trace elements. The residue is composed of garnet, phengite, clinopyroxene, coesite, and kyanite, as well as accessory monazite, rutile, and zircon. The mobile phase appears upon dehydration of mica schist as hydrous melt in 3.0 GPa runs at 750 and 900 °C and as supercritical liquid (SCL) at ≥5.5 GPa and ≥ 850 °C. The mobile phase generated at 5.5 GPa and 850°С has an H₂O content typical of SCL but preserves trace element patterns of the hydrous melt. Ba, LREE, and Th in the hydrous melt (3.0 GPa, 750 and 900 °C) are comparable to Nb in mobility but become markedly less compatible in SCL (≥5.5 GPa, ≥850 °C); Th has a slightly lower SCL-metasediment partition coefficient than La (<em>D</em> = C_SCL/C_Residue). The assumption of schist-derived SCL inputs to the source of arc- and back-arc magmas in the peridotitic mantle wedge is consistent with the observed H₂O/LREE, LILE/H₂O, Ba/La, Th/La, and Nd/Sr ratios in arc basalts. The fit of trace element chemistry is the best for SCL formed from metasediment with a composition of global subducting sediment (GLOSS) at 5.5 GPa and temperatures of 850°С to 1030°С. In this case, SCL inputs can translate high Th/La ratios to the arc magma source and maintain Nb depletion relative to LREE in the partial melts. Thus, the slab flux of sediment-derived SCL to the mantle wedge region of arc- and back arc magma generation can carry sufficient amounts of LILE, LREE, Th, and U, while the resulting magma remains depleted in Nb.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123254"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145962647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen generation potential of peridotites and pyroxenites in ophiolitic settings","authors":"Vivian Azor de Freitas ,&nbsp;Tiziano Boschetti ,&nbsp;Isabelle Moretti ,&nbsp;Alessandra Montanini","doi":"10.1016/j.chemgeo.2026.123266","DOIUrl":"10.1016/j.chemgeo.2026.123266","url":null,"abstract":"<div><div>The partially serpentinized mantle bodies exposed in the western sector of the Northern Apennines, Italy, represent a favorable environment for natural hydrogen (H₂) studies, particularly Mt. Prinzera, which hosts a hyperalkaline spring containing dissolved H₂. A geochemical characterization of peridotite, pyroxenite, and serpentinite samples was carried out to reconstruct the past and present stages of serpentinization and to assess their H₂ generation potential. This study combined mineralogical, whole-rock compositional, and redox-state analyses, along with thermodynamic modeling of spring waters. The major serpentinization event associated with mantle exhumation in the Middle to Late Jurassic was marked by extensive replacement of olivine, clinopyroxene, orthopyroxene by serpentine and subordinate magnetite. Alteration was more intense in olivine than in pyroxenes, resulting in higher serpentinization degrees in peridotites (∼ 50 vol%), compared to pyroxenites (∼ 10 vol%). Mineralogical evidence suggests temperatures of approximately 220 °C and 300 °C for this stage. Currently, serpentinization and H₂ generation are likely active at Mt. Prinzera, with fluid-rock interactions involving particularly the oxidation of a small fraction of Fe²⁺-serpentine and/or magnetite, rather than the primary mineral assemblage. Thermodynamic equilibria, based on the activities obtained from the aqueous speciation, and the isotope composition of the hyperalkaline water were used to estimate the temperature at depth, which appears to be markedly low. Thus, serpentinization may occur either at the base of Mt. Prinzera or within a deeper, hidden ultramafic body. In addition, trapped H₂ accumulations originating from earlier serpentinization stages can also be considered.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123266"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of lithium diffusion modelling in plagioclase: implications for the assessment of pre-eruptive timescales","authors":"Simone Costa ,&nbsp;Matteo Masotta ,&nbsp;Fabio Colle ,&nbsp;Pier Paolo Giacomoni ,&nbsp;Claudia D’Oriano ,&nbsp;Patrizia Landi","doi":"10.1016/j.chemgeo.2025.123222","DOIUrl":"10.1016/j.chemgeo.2025.123222","url":null,"abstract":"<div><div>Lithium diffusion chronometry in plagioclase is used to retrieve timescales of pre-eruptive processes that occur over seconds to hours. The random orientation of 2D crystal sections exposed for microanalysis can strongly affect modelling results, leading to flawed interpretations of pre-eruptive timescales. To evaluate the effect of random crystal orientation, we systematically applied and compared the results of one-dimensional (1D) and multidimensional (analytical 3D correction) Li diffusion modelling to multiple oriented sections obtained from a set of eight plagioclase crystals from Stromboli volcano (Italy). For each crystal, Li concentration profiles were acquired using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) on the section oriented parallel to (010) and on a sequence of three to four sections oriented perpendicular to (010), starting from the core-intersecting section. The diffusion model accounts for the analytical uncertainties in Li measurements and estimates the optimal timescale within a set of 1000 possible values through bootstrapping. Timescales obtained from Li concentration profiles acquired on sections perpendicular to (010) are maximum in the sections intersecting the crystal cores and decrease markedly within each crystal (by up to 93% for simple 1D modelling and up to 85% after 3D correction) with increasing distance from this section. In turn, timescales derived from sections parallel to (010) are systematically lower than those obtained for the theoretically equivalent section perpendicular to (010). This means that large underestimates of the timescales are introduced by the analysis of 2D crystal sections with relatively small offset from the core-intersecting section, also in the case of plagioclase exposing sections parallel to (010), where the offset from the core-intersecting section cannot be well evaluated on a morphological basis. The application of the analytical 3D correction to diffusion profiles in part compensates for the underestimates derived from the offset relative to the core-intersecting section. Yet, the choice of an adequate plagioclase crystal in 2D sections of natural rocks remains a major source of uncertainty, which adds to other uncertainties related to the choice of diffusion coefficients and Arrhenius parameters. The collective impact of these uncertainties is discussed based on the comparison between Li diffusion timescales in plagioclase obtained in this and previous studies on Stromboli volcano. The implemented methodology for Li diffusion modelling presented in this study allows a more robust assessment of pre-eruptive timescales and is applicable to other volcanic systems.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123222"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145823497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epigenetic geochemical behavior of fluorine and beryllium in lepidolite residue","authors":"Huichun Gong ,&nbsp;Pingchao Ke ,&nbsp;Xiang Tan ,&nbsp;Lingxiu Long ,&nbsp;Yuanyong Qin ,&nbsp;Lingling Xu ,&nbsp;Jian Wang ,&nbsp;Guangrong Li ,&nbsp;Yipeng Zhou","doi":"10.1016/j.chemgeo.2026.123256","DOIUrl":"10.1016/j.chemgeo.2026.123256","url":null,"abstract":"<div><div>The epigenetic geochemical behavior of critical metals in weathering environments is fundamental to understanding their mobility and cycling. This study systematically investigates the dissolution kinetics and aqueous speciation of fluoride (F⁻) and beryllium (Be²⁺) from lepidolite residues under simulated weathering conditions. Column leaching experiments revealed a distinct temporal fractionation: beryllium exhibited a rapid “burst” release with maximum rates reaching 1.55–2.83 mg/d during the initial weathering stage, governed by surface-reaction-limited kinetics (Elovich model), whereas fluoride displayed a sustained diffusion-controlled release (Shrinking Core model). Thermodynamic modeling identified a fluoride-promoted dissolution mechanism, where the formation of stable fluoro‑beryllium complexes (predominantly BeF₃⁻ and BeF₄²⁻) significantly enhances beryllium solubility by reducing free cation activity and preventing surface saturation. This coupled mobilization results in a significant geochemical anomaly, quantified by a Nemerow Pollution Index (P_n) of 22.62. The flow-weighted average concentration of beryllium (0.136 mg/L) exceeded environmental standards by 27-fold (0.005 mg/L limit), with peak concentrations during initial release reaching &gt;1000-fold exceedance, confirming beryllium as the dominant toxicity driver. Furthermore, increasing the bulk density of the residue (from 1.39 to 1.95 g/cm³) was found to effectively retard these kinetics, reducing the cumulative beryllium flux by approximately 50%. These findings highlight the “dual-element” signature of lithium-extraction residues and underscore the controlling role of complexation in trace metal mobilization.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123256"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cathodoluminescence is not always a robust proxy for Ti content in quartz","authors":"Xuelin Zhu,&nbsp;Yang Li","doi":"10.1016/j.chemgeo.2026.123253","DOIUrl":"10.1016/j.chemgeo.2026.123253","url":null,"abstract":"<div><div>The temperature and timescale of magma evolution are essential to our understanding of magmatic systems, with profound implications for volcanic eruption and ore formation. Diffusion of elements, such as Ti in quartz, is an important tool to tackle the thermal state and longevity of felsic magma systems, which requires accurate measurement of Ti content with high spatial resolution. Since cathodoluminescence (CL) images can achieve sub-micron resolution, most studies use CL greyscale as a proxy for quartz Ti content. This proxy is rooted in an empirical correlation between CL intensity and Ti content. However, the reliability of this correlation is contested. Here we show that this correlation can be weak, and CL greyscale can even reverse when imaged for a second time. We then show that the conventional calibration methods on micron-scale may not be applicable to the submicron scale. These lines of evidence collectively suggest that CL greyscale is not always a robust proxy for quartz Ti content, and calibration of diffusivities and insights into the thermal history of felsic magmas from CL-based studies should be evaluated with caution.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123253"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 fluxing and carbon assimilation by arc melts during magma–limestone interaction","authors":"Frances M. Deegan ,&nbsp;Manfredo Capriolo ,&nbsp;Valentin R. Troll ,&nbsp;Franz A. Weis ,&nbsp;Sara Callegaro ,&nbsp;Simone Colucci ,&nbsp;Carmela Freda ,&nbsp;Valeria Misiti ,&nbsp;László E. Aradi ,&nbsp;Henrik Skogby ,&nbsp;Herlan Darmawan ,&nbsp;Harri Geiger","doi":"10.1016/j.chemgeo.2026.123264","DOIUrl":"10.1016/j.chemgeo.2026.123264","url":null,"abstract":"<div><div>Reworking of limestone (CaCO₃) by magma is an important source of carbon in volcanic arc emissions. However, while it is broadly understood that CO₂ is liberated during magma–limestone interaction, the degassing behaviour of calcite in silicate melts is less well constrained. In this study, we carried out microspectroscopic analysis of volatiles within fluid inclusions and glass (former melt) in the products of short-term experiments simulating limestone assimilation in mafic arc melt (<em>T</em> = 1200 °C, <em>P</em> = 0.5 GPa, runtimes of 0 to 300 s). The experimental products consist of partly to wholly assimilated limestone xenoliths enveloped by CaO-rich silicate glass (reacting melt) that grades into mafic glass (host melt). Micro- to milli-metric sized fluid-filled bubbles permeate the experimental products. This study reveals that limestone assimilation induces extremely fast apparent diffusivity of CO₂ (D_CO2 ≳ 10⁻⁷ m²/s) through both the reacting melt and the host melt. Volatile saturation is thus quickly reached, triggering nucleation of bubbles mainly containing CO₂ ± CO, CH₄, N₂, H₂, and H₂O. Crucially, we find that the host melt contains dissolved CO₂ from limestone, despite showing no other compositional evidence for limestone assimilation. Mafic melts in volcanic regions underlain by limestone may therefore mobilise and transport more carbon than previously thought, with implications for eruptive behaviour, volcanic CO₂ inventories, and long-term climate warming.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123264"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146015036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silicon isotope-based assessments of biogenic and dissolved silica content determination in marine sediments","authors":"Die Li ,&nbsp;Quanchao Cui ,&nbsp;Haiyang Liu ,&nbsp;Tzu-Hao Huang ,&nbsp;Wei-li Hong ,&nbsp;Bangqi Hu ,&nbsp;Jing Huang ,&nbsp;Min Luo ,&nbsp;Weidong Sun ,&nbsp;Xiaole Sun","doi":"10.1016/j.chemgeo.2026.123251","DOIUrl":"10.1016/j.chemgeo.2026.123251","url":null,"abstract":"<div><div>Sedimentary biogenic silica (bSi) is a primary sink of oceanic silicon (Si), and its quantification is essential for constraining the marine Si budget. The traditional alkaline leaching method estimates bSi contents by extrapolating a regression of Si leachates at 2, 3, and 5 h, but this approach is biased by lithogenic Si (LSi) dissolution. We analyzed 59 marine sediment samples (0.2 to 57.0 wt% bSi) and used Si isotopes to re-assess this method. Samples with moderate bSi contents (5–20 wt%) show a marked decline in dissolution rates after 3–5 h of leaching. Si isotopes of the leachates reveal that the decline reflects either a shift from dominant bSi to LSi phase or changes in bSi species through time. Sediments with &lt;5 wt% or &gt; 20 wt% bSi display a stable Si dissolution rate throughout 8 h, likely due to unchanged dominant Si phases of lithogenic or biogenic Si. Additionally, we re-assessed the brucite co-precipitation method (MAGIC) for porewater dissolved Si (dSi) recovery. Mg/Si molar ratios &lt;100 yield dSi recovery &lt;90%, resulting in large isotope fractionation. Hence, an Mg/Si ratio of ≥300 is recommended to guarantee full recovery, and H₂O₂ pretreatment is necessary to eliminate matrix effects induced by high Fe, Mn and DOC concentrations. Our findings imply that the traditional leaching method likely underestimates current bSi contents, especially in clay or/and organic-rich sediments with moderate bSi contents.</div></div>","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"704 ","pages":"Article 123251"},"PeriodicalIF":3.6,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Al/Si ratio controls on δ41K in granitic K-feldspar: Decoupling Li isotopes and implications for magma evolution","authors":"Shanke Liu, Benxun Su, Shiying Wang, Wenjun Li","doi":"10.1016/j.chemgeo.2026.123373","DOIUrl":"https://doi.org/10.1016/j.chemgeo.2026.123373","url":null,"abstract":"","PeriodicalId":9847,"journal":{"name":"Chemical Geology","volume":"10 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147447938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}