A new clinopyroxene-liquid barometer, and implications for magma storage pressures under Icelandic rift zones

DA Neave, KD Putirka - American Mineralogist, 2017 - degruyter.com
Pressure is one of the key variables that controls magmatic phase equilibria. However,
estimating magma storage pressures from erupted products can be challenging. Various …

Oxygen fugacity across tectonic settings

E Cottrell, SK Birner, M Brounce… - Magma redox …, 2021 - Wiley Online Library
Experiment and observation have established the centrality of oxygen fugacity (f O 2) to
determining the course of igneous differentiation, and so the development and application of …

Magmatism in the North Atlantic Igneous Province; mantle temperatures, rifting and geodynamics

MJ Hole, JH Natland - Earth-Science Reviews, 2020 - Elsevier
We have re-evaluated mantle potential temperature estimates for the North Atlantic Igneous
Province (NAIP). Temperature estimates involving olivine addition to pillow-lava glasses are …

Highly oxidized intraplate basalts and deep carbon storage

XH Dong, SJ Wang, W Wang, S Huang, QL Li, C Liu… - Science …, 2024 - science.org
Deep carbon cycle is crucial for mantle dynamics and maintaining Earth's habitability.
Recycled carbonates are a strong oxidant in mantle carbon-iron redox reactions, leading to …

Redox variations in Mauna Kea lavas, the oxygen fugacity of the Hawaiian plume, and the role of volcanic gases in Earth's oxygenation

M Brounce, E Stolper, J Eiler - Proceedings of the National Academy of …, 2017 - pnas.org
The behavior of C, H, and S in the solid Earth depends on their oxidation states, which are
related to oxygen fugacity (f O2). Volcanic degassing is a source of these elements to Earth's …

Carbon Fluxes and Primary Magma CO2 Contents Along the Global Mid‐Ocean Ridge System

M Le Voyer, EH Hauri, E Cottrell… - Geochemistry …, 2019 - Wiley Online Library
The concentration of carbon in primary mid‐ocean ridge basalts (MORBs), and the
associated fluxes of CO2 outgassed at ocean ridges, is examined through new data …

The impact of degassing on the oxidation state of basaltic magmas: a case study of Kīlauea volcano

Y Moussallam, M Edmonds, B Scaillet, N Peters… - Earth and Planetary …, 2016 - Elsevier
Volcanic emissions link the oxidation state of the Earth's mantle to the composition of the
atmosphere. Whether the oxidation state of an ascending magma follows a redox buffer …

The oxidation state of iron in Mid-Ocean Ridge Basaltic (MORB) glasses: Implications for their petrogenesis and oxygen fugacities

HSC O'Neill, AJ Berry, G Mallmann - Earth and Planetary Science Letters, 2018 - Elsevier
The oxidation state of a basaltic liquid may be obtained from the average valence state of Fe
in its quenched glass. Suitable glasses are widely available from the basalts erupted at Mid …

Mantle plumes are oxidised

Y Moussallam, MA Longpré, C McCammon… - Earth and Planetary …, 2019 - Elsevier
From oxic atmosphere to metallic core, the Earth's components are broadly stratified with
respect to oxygen fugacity. A simple picture of reducing oxygen fugacity with depth may be …