Geochimica et Cosmochimica Acta最新文献

筛选
英文 中文
Granitoid diversity in the early Archean felsic crust revealed by geochemical data from detrital and igneous Paleoarchean apatite 碎屑和火成岩古太古代磷灰石的地球化学资料揭示了早太古宙长英质地壳中花岗岩的多样性
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-29 DOI: 10.1016/j.gca.2026.07.035
Combaz Jean-Baptiste, Laurent Oscar, Stevens Gary, Bruand Emilie, de Parseval Philippe
{"title":"Granitoid diversity in the early Archean felsic crust revealed by geochemical data from detrital and igneous Paleoarchean apatite","authors":"Combaz Jean-Baptiste, Laurent Oscar, Stevens Gary, Bruand Emilie, de Parseval Philippe","doi":"10.1016/j.gca.2026.07.035","DOIUrl":"https://doi.org/10.1016/j.gca.2026.07.035","url":null,"abstract":"The chemistry of detrital apatite has increasingly been employed for provenance studies and to constrain the composition of the parent magma, yet this tool has to date rarely been applied to the topic of Archean crustal evolution. In this study, we present new halogen and trace element compositions analyzed via EPMA and LA-ICP-MS in detrital apatites collected from Paleoarchean metasediments in the Barberton Greenstone Belt (BGB), South Africa, and in magmatic apatites of the surrounding tonalite-trondhjemite-granodiorite (TTG) granitoid-gneisses. Detrital apatites from both the Hooggenoeg (deposited at ∼ 3.43 Ga) and Schapenburg (deposited at ∼ 3.24 Ga) (meta-)sedimentary rocks retained trace element chemistry consistent with a primary igneous origin. They show strong fractionation of their REE spectra (La<ce:inf loc=\"post\">N</ce:inf>/Lu<ce:inf loc=\"post\">N</ce:inf> = 29.4 and 5.43 respectively) and low Eu/Eu* (∼0.5 and 0.8 respectively). On the other hand, the Hooggenoeg apatites have high Sr (600–1200 ppm) and moderate Mn content (400–800 ppm), are F-rich (∼2.2 wt%) and have Cl content ∼ 0.4 wt%; whereas the Schapenburg apatites have uniformly low Sr (∼200 ppm), higher Mn (800–1800 ppm) together with higher F (∼3.2 wt%) and lower Cl (∼0.01 wt%) contents. Strikingly, the characteristics of neither of these populations match with those of apatites from the Barberton TTGs but rather overlap well with apatites crystallized in Neoarchean granitoids, notably sanukitoids, either low-SiO<ce:inf loc=\"post\">2</ce:inf> ones in the case of the Hooggenoeg apatites, or high-SiO<ce:inf loc=\"post\">2</ce:inf> for the Schapenburg ones. Therefore, rocks akin to the sanukitoid suite were already present and exposed to surface alteration in the Paleoarchean felsic crust at the time the sediments were deposited. This implies that the felsic crust around the BGB at 3.43–3.24 Ga was more compositionally diverse than the exposed rock record (dominated by TTGs) suggests. In turn, we propose that the onset of <ce:underline>observed</ce:underline> granitoid diversity in the Neoarchean is an artifact related to a preservation bias, i.e. the higher (upper crustal) emplacement level of K-rich granitoids compared with mid-crustal TTGs made them more prone to erosion before ca. 3 Ga, while the onset of collisional processes at 3.0–2.5 Ga allowed to “shield” these high-level intrusions in the newly amalgamated continental masses and preserve them to our time.","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"99 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid prediction of CO2 solubility in brines using segmented depressurization-steady-state experiments and physics-constrained time-series learning 利用分段减压稳态实验和物理约束时间序列学习快速预测CO2在盐水中的溶解度
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-29 DOI: 10.1016/j.gca.2026.08.027
Danqun Wang, Zhiping Li, Jingtao Lai, Yan Zhang, Jianping Guo, Qian Zhang
{"title":"Rapid prediction of CO2 solubility in brines using segmented depressurization-steady-state experiments and physics-constrained time-series learning","authors":"Danqun Wang, Zhiping Li, Jingtao Lai, Yan Zhang, Jianping Guo, Qian Zhang","doi":"10.1016/j.gca.2026.08.027","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.027","url":null,"abstract":"CO<ce:inf loc=\"post\">2</ce:inf>-brine solubility controls CO<ce:inf loc=\"post\">2</ce:inf> partitioning and solubility trapping in saline subsurface systems. Mixed-ion composition, high salinity, and pressures around the critical pressure of pure CO<ce:inf loc=\"post\">2</ce:inf> increase thermodynamic nonlinearity and make equilibrium prediction more difficult. The objective of this study is to enable rapid and physically consistent early prediction of equilibrium CO<ce:inf loc=\"post\">2</ce:inf> solubility from partial experimental observations. Stepwise depressurization-to-equilibrium experiments were conducted for NaCl brines and mixed chloride brines prepared from NaCl, CaCl<ce:inf loc=\"post\">2</ce:inf>, and MgCl<ce:inf loc=\"post\">2</ce:inf> at an approximate anhydrous salt mass ratio of 3:1:1, over 30/50/70 °C, 2–20 MPa, and 30/50/70 g L<ce:sup loc=\"post\">−1</ce:sup>. CO<ce:inf loc=\"post\">2</ce:inf> solubility increased with pressure and decreased with temperature and salinity. At the same mass salinity, mixed brines showed lower solubility than NaCl brines. The first-order Setschenow relation adequately described the data (R<ce:sup loc=\"post\">2</ce:sup> ≈ 0.90–0.99), providing quantitative salting-out parameters and a salinity-dependent reference for the subsequent prediction framework. We then developed a two-stage time-series framework for dynamic tracking and early prediction of equilibrium solubility. The framework combines a feasible-domain constraint based on the thermodynamic upper bound <ce:italic>C*</ce:italic>(<ce:italic>T</ce:italic>, <ce:italic>P</ce:italic>, <ce:italic>S</ce:italic>) with a first-order relaxation residual used as a practical regularization term. These constraints helped reduce extrapolation drift and physically infeasible predictions in the tested cases, with complementary effects on prediction feasibility and trajectory stability. Overall, the experimental dataset and Setschenow-based salting-out analysis provide the data and physical basis for thermodynamically constrained early prediction of CO<ce:inf loc=\"post\">2</ce:inf> equilibrium solubility within the tested NaCl and mixed NaCl-CaCl<ce:inf loc=\"post\">2</ce:inf>-MgCl<ce:inf loc=\"post\">2</ce:inf> brine systems. At this stage, the framework should be viewed primarily as a laboratory-scale tool for experimental acceleration and condition screening within the investigated range","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"6 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sulfur diffusion in lunar melts and its implications for lunar mantle sulfur abundance 月球熔体中硫的扩散及其对月幔硫丰度的影响
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-29 DOI: 10.1016/j.gca.2026.08.028
Kang Liu, Li Zhang, Hesan Wu, Wan-Cai Li, Huaiwei Ni
{"title":"Sulfur diffusion in lunar melts and its implications for lunar mantle sulfur abundance","authors":"Kang Liu, Li Zhang, Hesan Wu, Wan-Cai Li, Huaiwei Ni","doi":"10.1016/j.gca.2026.08.028","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.028","url":null,"abstract":"Lunar volcanic glass beads preserve records of sulfur evolution in primitive lunar magmas and provide important constraints on the sulfur inventory of the lunar interior. Reconstruction of their pre-eruptive sulfur contents requires sulfur diffusivity data for lunar melts, which have remained largely unavailable. Here we experimentally determined sulfur diffusivities in three synthetic lunar basaltic melts, spanning compositions from Apollo green (low TiO<ce:inf loc=\"post\">2</ce:inf>, 0.52 wt%) and orange (intermediate TiO<ce:inf loc=\"post\">2</ce:inf>, 8.58 wt%) to red (high TiO<ce:inf loc=\"post\">2</ce:inf>, 13.93 wt%), with SiO<ce:inf loc=\"post\">2</ce:inf> decreasing from 45.35 to 35.92 wt% and MgO from 16.00 to 11.00 wt%, using diffusion-couple experiments at 0.5 GPa and 1674–1876 K in a piston cylinder apparatus. Sulfur diffusivity increases systematically from green to orange to red glass compositions, with NBO/T rising from 1.76 to 2.49 to 2.82, respectively. At 1673 K, sulfur diffusivity in lunar melts is 6–13 times higher than that in terrestrial basaltic melts (NBO/T = 0.61–0.79), primarily owing to the more depolymerized structure of lunar melts. Combining these results with published experimental data, we develop a general parameterization for sulfur diffusivity in anhydrous lunar and terrestrial silicate melts under reduced conditions as a function of temperature (<ce:italic>T</ce:italic>) and melt composition (<ce:italic>X</ce:italic><ce:inf loc=\"post\">Si+Al</ce:inf>, expressed by the combined mole fraction of Si + Al), which reproduces nearly all available experimental data within a factor of 2. Applying our new sulfur diffusivity data to Apollo green and orange glass beads yields revised pre-eruptive sulfur concentrations of 282–311 and 331 μg/g, corresponding to mantle source sulfur abundances of 9–28 and 27–63 μg/g, respectively. These estimates differ substantially from values previous inferred for Apollo and Chang’e mare basalts, indicating significant sulfur heterogeneity within the lunar interior, likely inherited from lunar magma ocean differentiation and subsequent mantle overturn.","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"10 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geochemical data links Late Quaternary-age concretion formation to North Atlantic cold climate episodes 地球化学数据将晚第四纪凝块形成与北大西洋冷气候事件联系起来
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-27 DOI: 10.1016/j.gca.2026.08.029
Angel Mojarro, Adam B. Jost, Benjamin T. Uveges, Kristin D. Bergmann, Tyler Mackey, Diana Dumit, Mark L. Roberts, Jakob Vinther, Kristian Svennevig, Lisbeth L. Pedersen, Lis Allaart, Ole Bennike, Roger E. Summons
{"title":"Geochemical data links Late Quaternary-age concretion formation to North Atlantic cold climate episodes","authors":"Angel Mojarro, Adam B. Jost, Benjamin T. Uveges, Kristin D. Bergmann, Tyler Mackey, Diana Dumit, Mark L. Roberts, Jakob Vinther, Kristian Svennevig, Lisbeth L. Pedersen, Lis Allaart, Ole Bennike, Roger E. Summons","doi":"10.1016/j.gca.2026.08.029","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.029","url":null,"abstract":"Concretions are lithified bodies found in sedimentary rocks often formed as a result of microbial decay of an organic carbon source thereby promoting carbonate authigenesis. Prior studies have demonstrated that this process can enhance the preservation of biological and geochemical signals relative to the unconsolidated host sediment. What remains uncertain is why certain locations or geologic time periods appear to be particularly conducive toward concretion formation. Here we present an integrated radiocarbon, carbonate clumped isotope, and stable carbon isotope analysis of concretions from three Late Quaternary-age deposits across West Greenland and Canada which have encapsulated fish remains. These concretions contain capelin, <ce:italic>Mallotus villosus</ce:italic>, a small forage fish whose spawning leads to mass mortalities of males. Microbial decay of the resultant carrion generates alkalinity that can stimulate concretion formation. However, despite the periodic nature of the capelin lifecycle, concretion assemblages do not occur after every post-spawning mortality event. Carbon isotope values (–19.8 to –14.0‰) indicate that alkalinity was derived from capelin carrion via bacterial sulfate reduction rather than methanogenesis. Radiocarbon ages of concretion carbonate date the fish-derived carbon and variable contributions of <ce:sup loc=\"post\">14</ce:sup>C-depleted (old) carbon from the marine reservoir and therefore provide maximum age constraints on formation timing. After applying appropriate site-specific marine reservoir corrections, ages subsequently converge with independent stratigraphic chronologies at each location. Clumped isotope analysis and reconstructed precipitation temperatures from West Greenland reflect regional oxygen isotope and temperature trends associated with cooling, increasing aridity/evaporation, and glacier stillstands during the 8.2-kyr climate anomaly. Results from Canada reveal a record of glacial freshening and retreat of the Champlain Sea coinciding with a ∼60 m decrease in sea level together with anomalously cool and arid periods. We propose a two-factor model in which cryogenic and/or evaporative concentration of dissolved inorganic carbon during cold-climate intervals, coupled with transient microbial alkalinity pulses from capelin mass mortalities, mediated rapid <ce:italic>syn</ce:italic>-sedimentary concretion formation. Our work further suggests that geochemical records preserved within carbonate concretions may be utilized to supplement and possibly reconstruct past climate events.","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"40 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrogen in nominally anhydrous minerals from equilibrated ordinary chondrites and implications for the water budget of their parent bodies 平衡普通球粒陨石中名义上无水矿物中的氢及其对母体水收支的影响
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-25 DOI: 10.1016/j.gca.2026.08.024
S. Desikamani, L.D. Peterson, M.E. Newcombe, C.M.O’D. Alexander, J. Wang, R.D. Ash, S.G. Nielsen, P.M. Piccoli, E.S. Bullock
{"title":"Hydrogen in nominally anhydrous minerals from equilibrated ordinary chondrites and implications for the water budget of their parent bodies","authors":"S. Desikamani, L.D. Peterson, M.E. Newcombe, C.M.O’D. Alexander, J. Wang, R.D. Ash, S.G. Nielsen, P.M. Piccoli, E.S. Bullock","doi":"10.1016/j.gca.2026.08.024","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.024","url":null,"abstract":"Nucleosynthetic isotope signatures indicate that the Earth is predominantly made from inner solar system non-carbonaceous (NC) materials. However, a major uncertainty in models of water addition to the proto-Earth is the extent to which H (calculated in this study as µg/g H<ce:inf loc=\"post\">2</ce:inf>O, but present as H-bearing species) in nominally anhydrous minerals (NAMs) from NC materials could contribute to the bulk Earth water budget. The preserved water concentration of NC meteorite NAMs may also shape our understanding of processes occurring in the solar protoplanetary disk (e.g., implantation of H on the surfaces of NAM grains) and in planetesimals (e.g., metamorphism in chondrite parent bodies). Reported water contents for NAMs from the ordinary chondrites (OCs), the dominant NC material falling to Earth today, range between 10<ce:sup loc=\"post\">0</ce:sup>-10<ce:sup loc=\"post\">4</ce:sup> µg/g H<ce:inf loc=\"post\">2</ce:inf>O. In order to better constrain the potential contribution of ordinary chondrites to the Earth’s water budget we have measured water concentrations in NAMs from eight equilibrated OCs, six of which have not previously been investigated for water, and two of which (Chelyabinsk and Bensour) were previously measured in other laboratories. We find that olivine and low-Ca pyroxene from equilibrated OCs contain less than ∼ 10 µg/g H<ce:inf loc=\"post\">2</ce:inf>O. Based on these measurements, the water content of the NAM fraction of equilibrated OCs is &lt; 10 µg/g H<ce:inf loc=\"post\">2</ce:inf>O (a factor of ∼ 60–120 lower than prior estimates). Combining these constraints of equilibrated OC NAM water contents with published measurements of NAMs and glassy mesostases from unequilibrated OCs, we estimate that NAMs and glass in OC parent bodies could have delivered no more than ∼ 0.2 ocean masses of water to Earth (∼1% of an assumed total water budget of 18 ocean masses). Additional water could have been delivered from phyllosilicates and organics in the most primitive OC material that is not considered in our modeling. The difference in NAM water concentrations obtained here relative to some prior studies may be rooted in analytical artifacts associated with their nanoscale secondary ion mass spectrometric measurements.","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"209 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Weathering-driven clay mineral evolution regulates altitudinal shifts in carbon stabilization within seasonally frozen soils 气候驱动的粘土矿物演化调节了季节性冻土碳稳定的高度变化
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-24 DOI: 10.1016/j.gca.2026.08.023
Zerun Shen, Lulu Zhao, Han Yang, Anbei Deng, Fuxing Liu, Liuling Cheng, Fuwen Jia, Liao Yang, Genming Luo, Zhong-Qiang Chen, Shucheng Xie
{"title":"Weathering-driven clay mineral evolution regulates altitudinal shifts in carbon stabilization within seasonally frozen soils","authors":"Zerun Shen, Lulu Zhao, Han Yang, Anbei Deng, Fuxing Liu, Liuling Cheng, Fuwen Jia, Liao Yang, Genming Luo, Zhong-Qiang Chen, Shucheng Xie","doi":"10.1016/j.gca.2026.08.023","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.023","url":null,"abstract":"Organic carbon stabilization in seasonally frozen soils has important implications for carbon cycling and climate feedback. However, the role of weathering-driven clay mineral evolution in regulating carbon partitioning remains unclear. We analyze clay mineral assemblages, major element geochemistry, soil organic matter (SOM) fractions, carbon and nitrogen contents, and microbial glycerol dialkyl glycerol tetraethers (GDGTs) along an altitudinal gradient on the Haizigou hillslope at the eastern margin of the Qinghai-Tibetan Plateau (QTP). Mineral-associated organic matter (MAOM) is the dominant SOM fraction, accounting for 70.52% on average. The chemical index of alteration (CIA) increases significantly with altitude (r = 0.98, p &lt; 0.001), indicating enhanced chemical weathering at higher altitudes. MAOM also increases with altitude (r = 0.69, p &lt; 0.01), suggesting a close association between weathering and organic carbon partitioning. The dominant factors controlling MAOM stabilization shift along the altitudinal gradient. At middle altitudes, MAOM formation is most closely associated with 2:1-type vermiculite and hydroxy-interlayered vermiculite-rich assemblages under conditions of active organic input and rapid biological turnover. At higher altitudes, the content of kaolinite is statistically correlated with MAOM. Intensified weathering, Ca<ce:sup loc=\"post\">2+</ce:sup>, Na<ce:sup loc=\"post\">+</ce:sup>, and K<ce:sup loc=\"post\">+</ce:sup> leaching, and relative Al enrichment favor the formation of 1:1-type kaolinite, which supplies more effective mineral interfaces for organic carbon stabilization. Lower temperatures at higher altitudes are associated with weaker microbial processing and a greater transfer of carbon from the rapidly cycling particulate organic matter pool to the more protected mineral-associated pool. These results indicate that weathering-driven clay mineral evolution was a primary control on SOM fractionation and carbon stabilization in mountain seasonally frozen soils. Altitudinal changes in the weathering regime, mineral assemblages, and biological processing reorganize carbon stabilization pathways from a relatively fast-turnover mode toward a more protection-dominated mode.","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"17 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conserved ontogenetic regulation of strontium partitioning in biogenic apatite: a framework for reconstructing deep-time seawater temperature and chemistry 生物成因磷灰石中锶分配的保守个体发育调控:重建深时海水温度和化学的框架
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-22 DOI: 10.1016/j.gca.2026.08.020
Boyan Liu, Yadong Sun
{"title":"Conserved ontogenetic regulation of strontium partitioning in biogenic apatite: a framework for reconstructing deep-time seawater temperature and chemistry","authors":"Boyan Liu, Yadong Sun","doi":"10.1016/j.gca.2026.08.020","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.020","url":null,"abstract":"Biogenic apatite is a key geochemical archive for palaeoceanography, yet the interpretive basis for its trace-element proxies remains inadequately constrained. Here, we evaluate the robustness of the Sr–Ca system in conodont and ichthyolith apatite across a broad stratigraphic range to disentangle biological vital effects from thermodynamic and seawater signatures. We show that (Sr/Ca)<ce:inf loc=\"post\">PO4</ce:inf> is largely resistant to diagenetic overprinting. Biological and crystallographic controls exert a first-order influence on Sr partitioning, manifested by a reproducible non-linear relationship between (Sr/Ca)<ce:inf loc=\"post\">PO4</ce:inf> and specimen weight in conodonts. This is attributed to kinetic Sr<ce:sup loc=\"post\">2+</ce:sup> partitioning in response to physiologically controlled precipitation and challenges the trophic interpretation of conodont (Sr/Ca)<ce:inf loc=\"post\">PO4</ce:inf>. The persistence of this relationship over ∼ 300 Myr suggests that conodont biomineralisation was governed by conserved developmental controls, allowing ontogenetic effects to be mathematically corrected in Sr-based proxies","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"18 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Catch and release of deep energy sources across orogenic cycles” [Geochim. Cosmochim. Acta 426 (2026) 93–109] “在造山旋回中捕获和释放深层能量源”的勘误[地球化学]。Cosmochim。学报426 (2026)93-109]
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-22 DOI: 10.1016/j.gca.2026.08.018
Orlando Sébastien Olivieri, Francesco Ressico, Thomas Gusmeo, Isabelle Daniel, Antoine Boutier, Veronica Peverelli, Zeudia Pastore, Mark Van Baalen, Jens Fiebig, Alberto Vitale Brovarone
{"title":"Corrigendum to “Catch and release of deep energy sources across orogenic cycles” [Geochim. Cosmochim. Acta 426 (2026) 93–109]","authors":"Orlando Sébastien Olivieri, Francesco Ressico, Thomas Gusmeo, Isabelle Daniel, Antoine Boutier, Veronica Peverelli, Zeudia Pastore, Mark Van Baalen, Jens Fiebig, Alberto Vitale Brovarone","doi":"10.1016/j.gca.2026.08.018","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.018","url":null,"abstract":"","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"6 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New insights into the formation of sediment-hosted volcanogenic massive sulfide deposits by quadruple sulfur and multiple strontium isotopes 四重硫和多重锶同位素对沉积型火山块状硫化物矿床形成的新见解
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-18 DOI: 10.1016/j.gca.2026.08.019
Tomoaki Koya, Akizumi Ishida, Yuichiro Ueno, Daisuke Araoka, Hideko Takayanagi, Al Kurihara, Yumiko Watanabe, Yasufumi Iryu, Takeshi Kakegawa
{"title":"New insights into the formation of sediment-hosted volcanogenic massive sulfide deposits by quadruple sulfur and multiple strontium isotopes","authors":"Tomoaki Koya, Akizumi Ishida, Yuichiro Ueno, Daisuke Araoka, Hideko Takayanagi, Al Kurihara, Yumiko Watanabe, Yasufumi Iryu, Takeshi Kakegawa","doi":"10.1016/j.gca.2026.08.019","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.019","url":null,"abstract":"","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"21 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148756174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Four-dimensional perspectives on crystal cargoes reveal mafic rejuvenation of mantle mushes and antecryst recycling beneath Cumbre Vieja 晶体货物的四维视角揭示了坎布尔维耶哈地下幔泥的岩浆再生和反晶体的再循环
IF 5 1区 地球科学
Geochimica et Cosmochimica Acta Pub Date : 2026-08-15 DOI: 10.1016/j.gca.2026.08.017
Franco Cortese, Marc-Antoine Longpré, Matthew Pankhurst
{"title":"Four-dimensional perspectives on crystal cargoes reveal mafic rejuvenation of mantle mushes and antecryst recycling beneath Cumbre Vieja","authors":"Franco Cortese, Marc-Antoine Longpré, Matthew Pankhurst","doi":"10.1016/j.gca.2026.08.017","DOIUrl":"https://doi.org/10.1016/j.gca.2026.08.017","url":null,"abstract":"","PeriodicalId":327,"journal":{"name":"Geochimica et Cosmochimica Acta","volume":"159 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148756180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书