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1. Strontium isotope and trace element compositions of olivine-hosted melt inclusions from the Song Da ultramafic volcanic suite, northern Vietnam: Implications for chemical heterogeneity in mantle plumes NSTL国家科技图书文献中心

Kazzy, Charbel | Sobolev, Alexander, ...... - 《Chemical geology》 - 2025,674 - 共19页

摘要：Ultramafic magmas are the ideal trac & iecy;rs | of mantle composition, as they are derived from | high degrees of partial melting and their | compositions approach that of mantle peridotite. The Permian | Song Da ultramafic volcanic rocks in northern Vietnam

关键词： Emeishan LIP | Olivine | Melt inclusions | Strontium isotopes | Mantle heterogeneity | Mantle plume

2. Spatial distribution and molecular evidence of CO 2 dark production from lake sediments during anoxic-oxic transitions across a watershed NSTL国家科技图书文献中心

Guo, Wen | Liao, Peng ... - 《Chemical geology》 - 2025,674 - 共11页

摘要：Anoxic-oxic interfaces that occur in lake | sediments serve as hotspots for CO2 production | . Traditionally, in lake sediments, the oxidative production of | CO2 has been primarily attributed to microbial | mechanisms. Although abiotic formation of hydroxyl radicals

关键词： CO2 dark production | Lake sediments | Anoxic-oxic transitions | Abiotic pathway | Molecular mechanisms

3. Bimineralic calcite-aragonite rafts in the hypogeous lakes of Cova dets Ases (Mallorca): Controls on precipitation and polymorphism NSTL国家科技图书文献中心

Entrena, A. | Auque, L. F.... - 《Chemical geology》 - 2025,673 - 共22页

摘要：Calcite-aragonite bimineralic rafts and | related waters from hypogenic lakes in the coastal cave | of "Cova dets Ases", Mallorca, have been analyzed | for mineralogy and geochemistry (including stable | isotopes). The main objective has been the evaluation of

关键词： Calcite | Aragonite | Rafts | Hypogeous lakes | Isotope | Temperature

4. Hydrothermal origin of platinum-group minerals during serpentinization of the podiform chromitites from the Kizildag ophiolite in southern Turkiye NSTL国家科技图书文献中心

Chen, Chen | Wang, Christina Yan ... - 《Chemical geology》 - 2025,674 - 共15页

摘要：Platinum-group minerals (PGMs) in podiform | chromitites usually occur in the interior and/or edge of | chromite. However, the origin of PGMs in podiform | chromitites has long been a matter of debate. Here we | examined sub-micro to nanoscale textural features

关键词： Podiform chromitite | Kizildag ophiolite | Platinum-group mineral | PGE-bearing pentlandite | PGE nanophases

5. Intrinsic activity of organic acids controlling photochemical behavior and transformation of schwertmannite in acid mine drainage NSTL国家科技图书文献中心

Zhu, Shishu | Hou, Xiaokang ... - 《Chemical geology》 - 2025,674 - 共10页

摘要：Occurrence and transformation of | schwertmannite (Sch) widely influence the speciation and | distributions of iron and sulfur as well as pollutants in acid | mine drainage (AMD)-impacted ecosystems. Despite | extensive research on the biogeochemical fate of Sch in

关键词： Schwertmannite | Ligand-metal charge transfer | Carbon-centered radicals | Reactive oxygen species | Acid mine drainage

6. Allanite U-Th-Pb geochronology by laser ablation inductively coupled plasma mass spectrometry: Evaluation and development of reference materials with low common Pb NSTL国家科技图书文献中心

Luo, Tao | Li, Mufei ... - 《Chemical geology》 - 2025,674 - 共13页

摘要：Allanite, a member of the epidote supergroup | , is widely distributed across various rock types | . The U-Th-Pb geochronology of allanite can provide | critical time constraints for investigating igneous rock | formation, metamorphic events, and hydrothermal

关键词： Allanite | U-Th-Pb geochronology | Nd isotopes | In-situ | Reference material

7. Trace metal evolution of the Late Cretaceous Ocean NSTL国家科技图书文献中心

Sun, Mingzhao | Archer, Corey ... - 《Chemical geology》 - 2025,671 - 共23页

摘要：The Cenomanian-Turonian boundary (Late | Cretaceous) witnessed the last spectacular manifestation of | Mesozoic Anoxic Events (OAE 2, similar to 94 Ma), marked | by a prominent carbon isotope excursion (CIE) and | burial of organicmatter-rich sediments under high

关键词： Trace metal cycling | Cenomanian-Turonian Anoxic Event (Oceanic | Anoxic Event 2 | OAE 2) | Mid-Cenomanian Event (MCE) | Tarfaya Basin | Oceanic trace metal reservoirs

8. Source versus crustal processing and the evolution of the mantle wedge in the Trans-Mexican Volcanic Belt: Constraints from Os-O-He isotope systematics in olivine NSTL国家科技图书文献中心

Ahmadi, J. | Widom, E.... - 《Chemical geology》 - 2025,674 - 共18页

摘要：We have integrated Os isotope systematics in | olivine phenocrysts with published O and He isotope data | from a suite of well-characterized high-Mg olivine | -phyric basalts to andesites across the Trans-Mexican | Volcanic Belt (TMVB) to address the relative roles of

关键词： Trans-Mexican Volcanic Belt | osmium isotopes | Olivine | Arc magmas | Subduction

9. Relationships between salinity and hydrogen isotopes of n -alkanes in aquatic plants across Chinese natural lakes NSTL国家科技图书文献中心

Liu, Hu | Wang, Huanye ... - 《Chemical geology》 - 2025,674 - 共14页

摘要：Hydrogen isotope compositions (delta D) of | lipids are widely used in hydrological research, yet | there have been limited investigations into the | relationships between salinity and delta D values of aquatic | plants in natural lakes, which hinders the broader

关键词： Salinity | Hydrogen isotope | n -Alkane | Aquatic plant | Lake

10. Contrasting molecular structures and photooxidation behaviors between dissolved organic sulfur released from rice straw-biochar and aerobically decomposed rice straw NSTL国家科技图书文献中心

Wei, Chenhui | Fu, Heyun ... - 《Chemical geology》 - 2025,671 - 共9页

摘要：Photooxidation of dissolved organic sulfur | (DOS) in soils and natural waters plays an important | role in the sulfur biogeochemical cycle. However, the | structural-dependent photoliabilities of DOS from different | sources remain unclear. Here, the molecular structures

摘要：Ultramafic magmas are the ideal trac & iecy;rs | of mantle composition, as they are derived from | high degrees of partial melting and their | compositions approach that of mantle peridotite. The Permian | Song Da ultramafic volcanic rocks in northern Vietnam

关键词： Emeishan LIP | Olivine | Melt inclusions | Strontium isotopes | Mantle heterogeneity | Mantle plume

摘要：Anoxic-oxic interfaces that occur in lake | sediments serve as hotspots for CO2 production | . Traditionally, in lake sediments, the oxidative production of | CO2 has been primarily attributed to microbial | mechanisms. Although abiotic formation of hydroxyl radicals

关键词： CO2 dark production | Lake sediments | Anoxic-oxic transitions | Abiotic pathway | Molecular mechanisms

摘要：Calcite-aragonite bimineralic rafts and | related waters from hypogenic lakes in the coastal cave | of "Cova dets Ases", Mallorca, have been analyzed | for mineralogy and geochemistry (including stable | isotopes). The main objective has been the evaluation of

关键词： Calcite | Aragonite | Rafts | Hypogeous lakes | Isotope | Temperature

摘要：Platinum-group minerals (PGMs) in podiform | chromitites usually occur in the interior and/or edge of | chromite. However, the origin of PGMs in podiform | chromitites has long been a matter of debate. Here we | examined sub-micro to nanoscale textural features

关键词： Podiform chromitite | Kizildag ophiolite | Platinum-group mineral | PGE-bearing pentlandite | PGE nanophases

摘要：Occurrence and transformation of | schwertmannite (Sch) widely influence the speciation and | distributions of iron and sulfur as well as pollutants in acid | mine drainage (AMD)-impacted ecosystems. Despite | extensive research on the biogeochemical fate of Sch in

关键词： Schwertmannite | Ligand-metal charge transfer | Carbon-centered radicals | Reactive oxygen species | Acid mine drainage

摘要：Allanite, a member of the epidote supergroup | , is widely distributed across various rock types | . The U-Th-Pb geochronology of allanite can provide | critical time constraints for investigating igneous rock | formation, metamorphic events, and hydrothermal

关键词： Allanite | U-Th-Pb geochronology | Nd isotopes | In-situ | Reference material

摘要：The Cenomanian-Turonian boundary (Late | Cretaceous) witnessed the last spectacular manifestation of | Mesozoic Anoxic Events (OAE 2, similar to 94 Ma), marked | by a prominent carbon isotope excursion (CIE) and | burial of organicmatter-rich sediments under high

关键词： Trace metal cycling | Cenomanian-Turonian Anoxic Event (Oceanic | Anoxic Event 2 | OAE 2) | Mid-Cenomanian Event (MCE) | Tarfaya Basin | Oceanic trace metal reservoirs

摘要：We have integrated Os isotope systematics in | olivine phenocrysts with published O and He isotope data | from a suite of well-characterized high-Mg olivine | -phyric basalts to andesites across the Trans-Mexican | Volcanic Belt (TMVB) to address the relative roles of

关键词： Trans-Mexican Volcanic Belt | osmium isotopes | Olivine | Arc magmas | Subduction

摘要：Hydrogen isotope compositions (delta D) of | lipids are widely used in hydrological research, yet | there have been limited investigations into the | relationships between salinity and delta D values of aquatic | plants in natural lakes, which hinders the broader

关键词： Salinity | Hydrogen isotope | n -Alkane | Aquatic plant | Lake

摘要：Photooxidation of dissolved organic sulfur | (DOS) in soils and natural waters plays an important | role in the sulfur biogeochemical cycle. However, the | structural-dependent photoliabilities of DOS from different | sources remain unclear. Here, the molecular structures

关键词： Dissolved organic sulfur | Photooxidation | Pyrogenic dissolved organic matter | Leached dissolved organic matter | FT-ICR MS | S-XANES

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