Building cratonic keels in Precambrian plate tectonics
The ancient cores of continents (cratons) are underlain by mantle keels—volumes of melt-
depleted, mechanically resistant, buoyant and diamondiferous mantle up to 350 kilometres …
depleted, mechanically resistant, buoyant and diamondiferous mantle up to 350 kilometres …
New geochemical constraints on the origins of MARID and PIC rocks: Implications for mantle metasomatism and mantle-derived potassic magmatism
Abstract MARID (Mica-Amphibole-Rutile-Ilmenite-Diopside) and PIC (Phlogopite-Ilmenite-
Clinopyroxene) rocks are unusual mantle samples entrained by kimberlites and other …
Clinopyroxene) rocks are unusual mantle samples entrained by kimberlites and other …
Sheared peridotite and megacryst formation beneath the Kaapvaal craton: a snapshot of tectonomagmatic processes across the lithosphere–asthenosphere transition
The cratonic lithosphere–asthenosphere boundary is commonly invoked as the site of
sheared peridotite and megacryst formation, a well-recognized petrological assemblage …
sheared peridotite and megacryst formation, a well-recognized petrological assemblage …
The relationship between kimberlitic magmatism and electrical conductivity anomalies in the mantle
Kimberlites are igneous rocks whose formation remains enigmatic due to their severely
altered nature, highly variable compositions and rapid ascent through the lithosphere. The …
altered nature, highly variable compositions and rapid ascent through the lithosphere. The …
Silica-enriched mantle sources of subalkaline picrite-boninite-andesite island arc magmas
Primary arc melts may form through fluxed or adiabatic decompression melting in the mantle
wedge, or via a combination of both processes. Major limitations to our understanding of the …
wedge, or via a combination of both processes. Major limitations to our understanding of the …
Origin of graphite–diamond-bearing eclogites from Udachnaya kimberlite pipe
Kimberlite-borne mantle eclogites represent an important diamond source rock. Although
the origin and stability of diamond, as opposed to its low-pressure polymorph graphite, have …
the origin and stability of diamond, as opposed to its low-pressure polymorph graphite, have …
Links between deformation, chemical enrichments and Li-isotope compositions in the lithospheric mantle of the central Siberian craton
We report the concentrations ([Li]) and isotopic compositions of Li in mineral separates and
bulk rocks obtained by MC-ICPMS for 14 previously studied garnet and spinel peridotite …
bulk rocks obtained by MC-ICPMS for 14 previously studied garnet and spinel peridotite …
Ca-Sr isotope and chemical evidence for distinct sources of carbonatite and silicate mantle metasomatism
Enrichments in light REE without concomitant enrichments in high-field-strength elements in
mantle peridotites are usually attributed to inputs from carbonate-rich melts and referred to …
mantle peridotites are usually attributed to inputs from carbonate-rich melts and referred to …
Origin of clinopyroxene megacrysts from the 1.1 Ga Chigicherla-4 kimberlite (CC4), Dharwar craton, southern India: Implications for multi-stage metasomatism of the …
E Babu, S Dash, G Santhosh, A Mukherjee - Journal of Asian Earth …, 2023 - Elsevier
Megacrysts are large monomineralic crystals with an unknown relationship with the host
rock and hence of debatable origin. We present major and trace element chemistry of …
rock and hence of debatable origin. We present major and trace element chemistry of …
Nickel isotope fractionation factors between silicate minerals and melt
Quantitative knowledge of inter-mineral and mineral–melt isotopic fractionation factors is of
crucial importance to interpret variability of mass-dependent isotope ratios in terrestrial rocks …
crucial importance to interpret variability of mass-dependent isotope ratios in terrestrial rocks …