Oceanic intraplate explosive eruptions fed directly from the mantle

CL DeVitre, E Gazel, RS Ramalho… - Proceedings of the …, 2023 - National Acad Sciences
Constraining the volatile content of magmas is critical to our understanding of eruptive
processes and their deep Earth cycling essential to planetary habitability [R. Dasgupta, MM …

Two Distinct Metasomatized Mantle Sources Produced Two Groups of Alkaline SiO2-Undersaturated Rocks in the Southern Central European Volcanic Province

T Binder, MAW Marks, BF Walter, T Wenzel… - Journal of …, 2024 - academic.oup.com
Abstract Upper Cretaceous–Miocene alkaline SiO2-undersaturated volcanic rocks in the
southern Central European Volcanic Province (CEVP) comprise two distinct rock series:(i) …

The constant oxidation state of Earth's mantle since the Hadean

F Zhang, V Stagno, L Zhang, C Chen, H Liu… - Nature …, 2024 - nature.com
Determining the evolutionary history of mantle oxygen fugacity (f o2) is crucial, as it controls
the f o2 of mantle-derived melts and regulates atmospheric composition through volcanic …

Carbon budget of Earth's deep mantle constrained by petrogenesis of silica-poor ocean island basalts

C Sun, R Dasgupta - Earth and Planetary Science Letters, 2023 - Elsevier
The convecting mantle is the Earth's largest carbon reservoir that controls the carbon outflux
from the interior to surface, but its carbon content remains largely uncertain due to limited …

Assessing the presence of volatile-bearing mineral phases in the cratonic mantle as a possible cause of mid-lithospheric discontinuities

S Saha, Y Peng, R Dasgupta, M Mookherjee… - Earth and Planetary …, 2021 - Elsevier
A number of possible hypotheses have been proposed to explain the origin of mid-
lithospheric discontinuities (MLDs), typically characterized by∼ 2-6% reductions in seismic …

Global patterns in cratonic mid‐lithospheric discontinuities from Sp receiver functions

HE Krueger, I Gama, KM Fischer - Geochemistry, Geophysics …, 2021 - Wiley Online Library
The goal of this study is to constrain the origins of layering in the seismic velocity structure
within the cratonic mantle lithosphere (ie mid‐lithospheric discontinuities [MLDs]). For long …

Catastrophic craton destruction via wholesale lithosphere delamination

H Chen, M Tang, S Song - Geology, 2023 - pubs.geoscienceworld.org
The nuclei of continents, manifested as cratons, are the most long-lived parts of Earth's
lithosphere. However, ancient cratons in some areas can be substantially destroyed through …

[HTML][HTML] High CO2 in the mantle source of ocean island basanites

FML Forte, F Schiavi, EF Rose-Koga, SG Rotolo… - … et Cosmochimica Acta, 2024 - Elsevier
Some of the most CO 2-rich magmas on Earth are erupted by intraplate ocean island
volcanoes. Here, we characterise olivine-hosted melt inclusions from recent (< 10 ky) …

The effects of local variations in conditions on carbon storage and release in the continental mantle

SF Foley, C Chen, DE Jacob - National Science Review, 2024 - academic.oup.com
Recent advances indicate that the amount of carbon released by gradual degassing from
the mantle needs to be revised upwards, whereas the carbon supplied by plumes may have …

Redox evolution of crystallizing magmas with CHOS volatiles and its implications for atmospheric oxygenation

C Sun, CTA Lee - Geochimica et Cosmochimica Acta, 2022 - Elsevier
The evolution of Earth's atmospheric O 2 levels on long timescales is modulated in part by
the composition of magmatic gases, specifically their oxidation state and speciation. Here …