Links between the Archean hydrosphere and Earth’s interior [PDF]
Nature CommunicationsEarth’s long-term habitability depends on cycling of surface volatiles into and out of the mantle, yet when this cycling began and how the early hydrosphere became connected to Earth’s interior remain debated.
Zheng-Yu Long +6 more
doaj +2 more sources
Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt [PDF]
Communications Earth & EnvironmentThe extreme geochemical enrichment of post-collisional potassium-rich lava in the Alpine-Himalayan orogenic belt has led researchers to hypothesize that enrichment is inherited from a metasomatized mantle source potentially incorporating crustal ...
Weikai Li +4 more
doaj +2 more sources
Cr-spinel records metasomatism not petrogenesis of mantle rocks [PDF]
Nature Communications, 2019 Chromian-spinel from mafic-ultramafic rocks is used as a reliable geotectonic and mantle melting indicator. Here, the authors argue that this only works partially – it can be used to assess information on mantle metasomatic processes but not petrogenesis.
Hamed Gamal El Dien +8 more
doaj +4 more sources
The mantle source of REE-rich alkaline silicate magmas can be enriched by continent-derived sediment subduction [PDF]
Nature CommunicationsAlkaline silicate intrusions host large rare-earth-element (REE) resources, yet the precise origin of the mantle enrichment that generates these magmas remains unresolved.
Kun-Feng Qiu +8 more
doaj +2 more sources
Rodingite‐Derived Melt as a Recipe for Ultra‐Calcic Magmas
Geophysical Research LettersRodingite is a high‐CaO rock formed by Ca‐rich fluid metasomatism on mafic protoliths. It typically occurs within serpentinite and represents an often‐overlooked constituent of the altered oceanic lithosphere that may be subducted into the mantle ...
Mingdi Gao +5 more
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Geophysical Monograph Series, Page 137-165., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov +3 more
wiley +5 more sources
Low‐Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation
Geophysical Research Letters, 2023 The upper mantle is heterogeneous in Fe isotope compositions, but the origin of the heterogeneity needs understanding. Recent studies on oceanic basalts demonstrate that the upper mantle Fe isotope heterogeneity results from low‐degree melt metasomatism.
Pengyuan Guo +7 more
doaj +1 more source
The Relationship Between Kimberlitic Magmatism and Electrical Conductivity Anomalies in the Mantle
Geophysical Research Letters, 2022 Kimberlites are igneous rocks whose formation remains enigmatic due to their severely altered nature, highly variable compositions and rapid ascent through the lithosphere.
Sinan Özaydın, Kate Selway
doaj +1 more source
AGU Advances, 2023 Mid‐lithosphere discontinuities are seismic interfaces likely located within the lithospheric mantle of stable cratons, which typically represent velocities decreasing with depth.
Tianze Liu, Emily J. Chin, Peter Shearer
doaj +1 more source
Diamond preservation in the lithospheric mantle recorded by olivine in kimberlites
Nature Communications, 2023 The diamond potential of kimberlites is difficult to assess due to several mantle and magmatic processes affecting diamond content. Traditionally, initial evaluations are based on the compositions of mantle-derived minerals (garnet, chromite ...
Andrea Giuliani +8 more
doaj +1 more source