Contraction of North Atlantic Deep Water during glacial times: a paradigm called into question
Blaser and co-authors propose a new distribution of deep-water masses in the Atlantic Ocean during the Last Glacial Maximum and the Heinrich Stadial 1…
Neodymium
Authigenic radiogenic neodymium isotope composition traces millennial-scale overturning circulation variability in the Arabian Sea
The neodymium isotopic signature of the sediment authigenic fraction is, a priori, a valuable proxy for reconstructing deep-water mass trajectories…
Magmatic activity at the Carlsberg Ridge in the Indian Ocean triggered by glacial sea-level variation
De and colleagues provide a high-resolution record of magmatic input and associated hydrothermal activity over the past 49 kyr from a core recovered from a magmatic segment of the slow-spreading Carlsberg Ridge in the Indian Ocean.
A refined neodymium parameter modelling study reveals differing controls on neodymium cycling in the Atlantic and Pacific Oceans
Since neodymium isotopes are used as proxies for past ocean circulation and, more rarely, past weathering, constraining the modern Nd cycle is a major challenge for marine geochemists…
Trace Element Dynamics in the Oligotrophic Northwest Pacific: Insights from the China GEOTRACES GP09 Cruise
This highlight summarises several articles arising from the GP09 cruise in the Northwest Pacific Ocean…
Neodymium isotopes trace past Antarctic Intermediate Water circulation in the Arabian Sea
Shukla and co-authors reconstruct ventilation in the Northwestern Indian Ocean…
The Amazonian mangrove systems accumulate and release dissolved neodymium and hafnium to the oceans
Xu and colleagues investigated the concentrations of rare earth elements in the Amazonian mangrove.
Substantial trace metal input from the 2022 Hunga Tonga-Hunga Ha’apai eruption into the South Pacific Ocean
Zhang and co-workers investigate the impact of the 2022 eruption on the biogeochemistry of the South Pacific Gyre.
Intrigued by Rare Earth Elements and neodymium isotopes? A review for the curious
Vanessa Hatje and a group of Rare Earth Element (REE) specialists propose an exhaustive review on the behaviour of REE.
A thorough estimate of the hydrothermal plumes on neodymium concentration and isotope oceanic cycles
Basak and co-workers investigated the influence of particulate matter on neodymium distributions in the Southern East Pacific Rise Hydrothermal Plume.
The development of the modern Antarctic Circumpolar Current occurred much later than previously thought!
This study is challenging the belief that the onset of the Antarctic Circumpolar Current was solely triggered by the opening and deepening of Southern Ocean Gateways.
Overlooked riverine contributions of dissolved neodymium and hafnium to the Amazon estuary and oceans
Xu and colleagues investigated the isotopic composition of dissolved neodymium and hafnium along the entire salinity gradient of the Amazon estuary.
Exhaustive modelling study of the oceanic neodymium parameters
The conclusion of this study reinforces the important role of the solid particles in driving the neodymium oceanic cycle.
Updated compilation of the global continental and marine lithogenic neodymium isotopic measurements
This new compilation and gridded datasets offer a concrete way forward to improve the application of neodymium isotopes as a useful tracer of ocean circulation.
Rare Earth Elements and neodymium isotopes as tracers in the Mediterranean Sea
Garcia-Solsona and co-workers analysed 9 seawater stations around the central Mediterranean Sea
Particulate fluxes and circulation in a changing Arctic Ocean: tracer data and modeling
A complete review of published and new water column profiles of thorium-230 (230Th) and protactinium-231 (231Pa) concentrations and neodymium (Nd) isotopic compositions collected in the Amerasian Basin of the Arctic […]
Tracing water mass mixing in the Cape Basin and the restricted Angola Basin with radiogenic neodymium isotopes
In the frame of GEOTRACES cruise GA08, Rahlf et al. (2020, see reference below) determined seawater profiles of dissolved radiogenic neodymium isotope signatures (εNd) and neodymium concentrations across the restricted western […]
Local geologies imprint the Antarctic Bottom Water neodymium isotopic signatures
Dissolved neodymium (Nd) isotopes and concentrations were measured at six stations in the Australian sector of the Southern Ocean, targeting the study of the Adelie Land Bottom Water (ALBW), a […]
Why did the concentration of atmospheric carbon dioxide rise so much and so quickly during the last deglaciation?
During the Last Glacial Maximum, the deep southern Pacific waters were stratified, efficiently accumulating old, CO2 rich waters. Basak and co-authors (2018, see reference below) measured neodymium isotopes in sediment […]
New neodymium concentration and isotopic data from the West Pacific Ocean
In the framework of the GEOTRACES TransGeoBioOc process study (GPpr04), seawater samples were collected at 12 stations (and up to 17 depths per stations) along the SO223T cruise transect from […]
Short-Term Variability of Dissolved Rare Earth Elements and Neodymium Isotopes in the Entire Water Column of the Panama Basin
Patricia Grasse and co-workers (2017, see reference below) present new dissolved neodymium isotope compositions (εNd) and rare earth element (REE) concentrations from the Panama Basin. REE concentrations peak at the […]
Disentangling the paleo signals brought by neodymium isotopic composition
Which paleo information are traced by the imprint neodymium isotopic signatures (εNd) in the different archives: paleo circulation or paleo erosion? The scientific debate on this issue is opened for […]
Dissolved neodymium isotopes and Rare Earth Elements combined with oxygen isotopes trace water masses in the Fram Strait
Georgi Laukert and co-workers (2017, see reference below) provide new insights into the sources, distribution and mixing of water masses passing the Fram Strait, the gateway between the Arctic Ocean […]
Water mass circulation and weathering inputs in the Labrador Sea based on coupled hafnium-neodymium isotope compositions and rare earth element distributions
Filippova and co-authors (2017, see reference below) show distinct water mass signatures in the Labrador Sea revealed by combined dissolved hafnium (Hf) and neodymium (Nd) isotope compositions and REE distribution […]
Lithogenic influence from the Hawaiian Islands detectable up to Station ALOHA surface waters
By coupling neodymium (Nd) and radium (Ra) isotopes and Rare Earth Element (REE) signals, Henning Fröllje and co-workers (2016, see reference below) show that the coastal Hawaiian waters are affected […]
Water masses traced by neodymium isotopic compositions at an unprecedented level in the North Atlantic Ocean
As part of the Dutch GEOTRACES GA02 section, Myriam Lambelet analysed neodymium (Nd) isotopic compositions and concentrations at 12 profiles in the North West Atlantic Ocean, extending from the south […]
Coupling Rare Earth Elements concentrations, neodymium and radium isotopes: a powerful tool to decode environmental processes
For the first time, neodymium (Nd) isotopic compositions have been measured together with dissolved and colloidal Rare Earth Elements (REE) concentrations in the Amazon estuary salinity gradient, as part of […]
The potential of coupling high-resolution circulation models and geochemical tracers: example of the Mediterranean Sea
For the first time, a numerical study proposes the simulation of the anthropogenic tritium (3H) invasion as well as the distribution of its decay product helium-3 (3He) using a high-resolution […]
Neodymium isotopic signature of the Ross Sea Water characterized
The first seawater neodymium isotopic compositions (εNd) and neodymium concentrations [Nd] profiles across the South Pacific circum-Antarctic fronts have been published recently (Basak et al., 2015, see reference below). Thanks to […]
New neodymium data in the North East Atlantic Ocean allow progressing on the behaviour of this geochemical tracer
High-resolution vertical profiles of neodymium (Nd) concentrations and isotopic compositions were measured at the eastern part of the US GEOTRACES North Atlantic Zonal Transect (GA03, Gulf of Cadiz – Mauritanian […]