Oceanic slab melting and mantle metasomatism [PDF]
Science Progress, 2001 Modern plate tectonic brings down oceanic crust along subduction zones where it either dehydrates or melts. Those hydrous fluids or melts migrate into the overlying mantle wedge trigerring its melting which produces arc magmas and thus additional ...
Prouteau, Gaëlle, Scaillet, Bruno
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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
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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
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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
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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
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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
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Progress in Earth and Planetary Science, 2023 The slab–mantle interface in subduction zones is one of the geological boundaries with the most significant chemical potential gradients, which leads to fluid-mediated metasomatic reactions and chemical transport.
Atsushi Okamoto, Ryosuke Oyanagi
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Metasomatized lithospheric mantle for Mesozoic giant gold deposits in the North China craton [PDF]
, 2020 The origin of giant lode gold deposits of Mesozoic age in the North China craton (NCC) is enigmatic because high-grade metamorphic ancient crust would be highly depleted in gold.
Becker, Harry +9 more
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Kuangchan zonghe liyong, 2022 Bengge alkaline igneous complex in Zhongdian, Western Yunnan has the variety of rock types, which is production after a complex magma—fluid process. The petrographical and mineralogical analysis of the host rock and its xenolith suggests that the igneous
Yupeng Huang +6 more
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