Barium isotope evidence for pervasive sediment recycling in the upper mantle

SG Nielsen, TJ Horner, HV Pryer, J Blusztajn, Y Shu… - Science …, 2018 - science.org
The upper mantle, as sampled by mid-ocean ridge basalts (MORBs), exhibits significant
chemical variability unrelated to mechanisms of melt extraction at ridges. We show that …

The stable isotope character of the Earth's mantle–A review

DA Ionov, J Hoefs, R Harmon - Chemical Geology, 2024 - Elsevier
This review describes the stable isotope character of the Earth's mantle, the 2900 km thick
silicate layer between the core and crust that comprises 67% of the Earth's mass and 84% of …

Barium isotope composition of depleted MORB mantle constrained by basalts from the South Mid-Atlantic Ridge (5–11° S) with implication for recycled components in …

F Wu, S Turner, K Hoernle, F Hauff, BF Schaefer… - … et Cosmochimica Acta, 2023 - Elsevier
Stable barium (Ba) isotopes are emerging as tracers for the recycling of crustal material into
the mantle. Small but significant Ba isotope variations have been found in global MORB (δ …

Barium isotopes in ocean island basalts as tracers of mantle processes

R Bai, MG Jackson, F Huang, F Moynier… - … et Cosmochimica Acta, 2022 - Elsevier
The compositions of ocean island basalts (OIB) can record signatures of ancient subducted
crust that has been recycled through the mantle. Based on their radiogenic isotope, major …

Barium isotopic composition of the mantle: Constraints from carbonatites

WY Li, HM Yu, J Xu, R Halama, K Bell, XY Nan… - … et Cosmochimica Acta, 2020 - Elsevier
To investigate the behaviour of Ba isotopes during carbonatite petrogenesis and to explore
the possibility of using carbonatites to constrain the Ba isotopic composition of the mantle …

Deciphering contribution of recycled altered oceanic crust to arc magmas using Ba‐Sr‐Nd isotopes

Y Zhang, Y Shu, S Turner, Z Chen… - … Research: Solid Earth, 2024 - Wiley Online Library
Altered oceanic crust (AOC) plays a critical role in geochemical recycling in subduction
zones. However, identifying contributions of subducted AOC to arc magmas remains a …

Barium isotope variation during fluid–rock interaction at forearc depths: Evidence from high-pressure fluid–metasomatized rocks in the Eastern Alps

XL Li, YX Chen, A Demény, XF Gu, JW Xiong, F Huang… - Lithos, 2024 - Elsevier
As a highly fluid mobile element, barium (Ba) and its isotopes are excellent tracers for fluid
associated processes in subduction zones. However, the behavior of Ba isotopes during …

Constraints of barium isotopes on recycling of ancient oceanic crust in the mantle of the South China Sea

Y Shu, GL Zhang, LL Tian, F Huang - Journal of Volcanology and …, 2022 - Elsevier
As surface reservoirs (eg sediments and altered oceanic crust) have extremely high barium
(Ba) concentrations and distinctive Ba isotope compositions compared to the mantle, Ba …