Environmental barium: potential exposure and health-hazards

M Peana, S Medici, M Dadar, MA Zoroddu… - Archives of …, 2021 - Springer
The relatively widespread presence of environmental barium is raising a growing public
awareness as it can lead to different health conditions. Its presence in humans may produce …

Bioactive trace metals and their isotopes as paleoproductivity proxies: An assessment using GEOTRACES‐era data

TJ Horner, SH Little, TM Conway… - Global …, 2021 - Wiley Online Library
Phytoplankton productivity and export sequester climatically significant quantities of
atmospheric carbon dioxide as particulate organic carbon through a suite of processes …

Enrichment of heavy calcium isotopes in saprolite due to secondary mineral formation

U Haldar, R Chakrabarti, RL Rudnick - Chemical Geology, 2023 - Elsevier
Calcium stable isotopes were analyzed in well-characterized saprolite samples developed
on a Mesozoic metadiabase dike near Cayce, South Carolina, to determine the degree and …

Barium-isotopic constraints on the origin of post-Marinoan barites

PW Crockford, BA Wing, A Paytan… - Earth and Planetary …, 2019 - Elsevier
Measurements of triple oxygen isotope ratios in barite horizons within post-Marinoan cap
carbonates have provided some of the most compelling evidence that the Marinoan …

Barium isotopes reveal the role of deep magmatic fluids in magmatic-hydrothermal evolution and tin enrichment in granites

G Deng, D Jiang, R Zhang, J Huang, X Zhang… - Earth and Planetary …, 2022 - Elsevier
Although deep magmatic fluids are important for the shallow magmatic-hydrothermal
evolution and transport/enrichment of ore-forming elements in transcrustal magmatic system …

Dominance of felsic continental crust on Earth after 3 billion years ago is recorded by vanadium isotopes

S Tian, X Ding, Y Qi, F Wu, Y Cai… - Proceedings of the …, 2023 - National Acad Sciences
The transition from mafic to felsic upper continental crust (UCC) is crucial to habitability of
Earth, and may be related to the onset of plate tectonics. Thus, defining when this crustal …

Cerium geochemical composition of the upper continental crust through time: Implications for tracing past surface redox conditions

W Li, R Nakada, Y Takahashi, RM Gaschnig… - … et Cosmochimica Acta, 2023 - Elsevier
To investigate the use of cerium (Ce) in the upper continental crust (UCC) for tracing
oxidative weathering, we measured the Ce anomaly (Ce/Ce*), the Ce stable isotope …

Barium isotope evidence for crystal-melt separation in granitic magma reservoirs

G Deng, J Kang, X Nan, Y Li, J Guo, X Ding… - … et Cosmochimica Acta, 2021 - Elsevier
Crystal-melt separation is important for understanding the evolution of granitic magma and
the connection between plutonic and volcanic rocks. Crystal accumulation and melt …

Barium isotope behavior during interaction between serpentinite-derived fluids and metamorphic rocks in the continental subduction zone

A Chen, YX Chen, X Gu, Z Zeng, Z Xiao… - … et Cosmochimica Acta, 2023 - Elsevier
Serpentinites in subduction zones are important fluid reservoirs for crust-mantle interaction
and arc magma formation. The serpentinite-derived fluids can carry fluid-mobile elements …

Rubidium isotope compositions of biotite in granites record magmatic-hydrothermal process and rare metal enrichments

X Hu, D Jiang, G Deng, F Huang - Geochimica et Cosmochimica Acta, 2024 - Elsevier
Magmatic-hydrothermal processes associated with granitic rocks are crucial for magma
evolution and rare metal enrichment. This study presents Rb isotope compositions (δ 87 Rb) …