Toward an improved understanding of the marine barium cycle and the application of marine barite as a paleoproductivity proxy

SC Carter, A Paytan, EM Griffith - Minerals, 2020 - mdpi.com
Marine barite (BaSO4) is a relatively ubiquitous, though minor, component of ocean
sediments. Modern studies of the accumulation of barite in ocean sediments have …

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 …

Constraining the oceanic barium cycle with stable barium isotopes

Z Cao, C Siebert, EC Hathorne, M Dai… - Earth and Planetary …, 2016 - Elsevier
The distribution of barium (Ba) concentrations in seawater resembles that of nutrients and
Ba has been widely used as a proxy of paleoproductivity. However, the exact mechanisms …

Barium and strontium isotope fractionation by cyanobacteria forming intracellular carbonates

N Mehta, M Coutaud, J Bouchez, K van Zuilen… - … et Cosmochimica Acta, 2023 - Elsevier
While barium (Ba) and strontium (Sr) stable isotopes are increasingly used as tracers of
biogeochemical processes and paleo-proxies, the role of biotic processes on Ba and Sr …

Barium isotopes in mid-ocean ridge hydrothermal vent fluids: A source of isotopically heavy Ba to the ocean

YT Hsieh, L Bridgestock, PP Scheuermann… - … et Cosmochimica Acta, 2021 - Elsevier
Mid-ocean ridge (MOR) hydrothermal vent fluids are enriched with dissolved barium, but
due to barite (BaSO 4) precipitation during mixing between Ba-bearing vent fluids and SO 4 …

Estuarine processes modify the isotope composition of dissolved riverine barium fluxes to the ocean

L Bridgestock, J Nathan, R Paver, YT Hsieh, D Porcelli… - Chemical …, 2021 - Elsevier
Barium (Ba) isotope variations offer the potential to trace environmental processes, including
long-term changes in river discharge and marine export production. Riverine inputs are an …

Barium in deep-sea bamboo corals: Phase associations, barium stable isotopes, & prospects for paleoceanography

BM Geyman, JL Ptacek, M LaVigne… - Earth and Planetary …, 2019 - Elsevier
Reconstruction of past seawater δ 138/134 Ba NIST (barium-isotopic compositions) can
augment existing proxies of water mass provenance and deep-ocean circulation. Deep-sea …

Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation

LF Gou, Z Jin, A Galy, YZ Gong, XY Nan, C Jin… - Earth and Planetary …, 2020 - Elsevier
Barium (Ba) isotopes have been used to trace water mass mixing and export productivity in
the oceans. However, the sources, isotopic signature and seasonal variation of dissolved Ba …

Controls on the barium and strontium isotopic records of water chemistry preserved in freshwater bivalve shells

KS Dobra, RC Capo, BW Stewart… - … Science & Technology, 2024 - ACS Publications
Biogenic carbonates, including bivalve shells, record past environmental conditions, but
their interpretation requires understanding environmental and biological factors that affect …

Barium isotopic fractionation in latosol developed from strongly weathered basalt

Y Gong, Z Zeng, C Zhou, X Nan, H Yu, Y Lu… - Science of the total …, 2019 - Elsevier
Weathering is a key process in the transfer of material from continents to the hydrosphere. A
latosol profile in Zhanjiang, Guangdong Province, South China, formed through intense …