Globally distributed iridium layer preserved within the Chicxulub impact structure
The Cretaceous-Paleogene (K-Pg) mass extinction is marked globally by elevated
concentrations of iridium, emplaced by a hypervelocity impact event 66 million years ago …
concentrations of iridium, emplaced by a hypervelocity impact event 66 million years ago …
Basalts and picrites from a plume-type ophiolite in the South Qilian Accretionary Belt, Qilian Orogen: accretion of a Cambrian Oceanic Plateau?
Oceanic plateaus with high-Mg rocks in the present-day oceanic crust have attracted much
attention for their proposed mantle-plume origins and abnormally high mantle potential …
attention for their proposed mantle-plume origins and abnormally high mantle potential …
[HTML][HTML] The komatiite-mantle platinum-group element paradox
The platinum-group element (PGE) contents of komatiites have been used to estimate the
PGE contents of their mantle sources and investigate temporal variations in the PGE …
PGE contents of their mantle sources and investigate temporal variations in the PGE …
Geochemistry and SmNd isotope systematics of mafic-ultramafic rocks from the Babina and Mauranipur greenstone belts, Bundelkhand Craton, India: Implications for …
The Paleoarchean geodynamical evolution of the Bundelkhand Craton is discussed based
on the geochemistry (major, trace and rare earth elements) and Sm single bond Nd isotope …
on the geochemistry (major, trace and rare earth elements) and Sm single bond Nd isotope …
[HTML][HTML] Petrogenesis of 3.15 Ga old Banasandra komatiites from the Dharwar craton, India: Implications for early mantle heterogeneity
JM Maya, R Bhutani, S Balakrishnan, SR Sandhya - Geoscience Frontiers, 2017 - Elsevier
Abstract Spinifex-textured, magnesian (MgO> 25 wt.%) komatiites from Mesoarchean
Banasandra greenstone belt of the Sargur Group in the Dharwar craton, India were …
Banasandra greenstone belt of the Sargur Group in the Dharwar craton, India were …
Olivine in komatiite records origin and travel from the deep upper mantle
The deep upper mantle is the main source of high-temperature magmatism, but the only
known naturally occurring samples of high-pressure mantle constituents are mineral …
known naturally occurring samples of high-pressure mantle constituents are mineral …
Coexisting Nb-enriched basalts and arc volcanic rocks in the northern Qiangtang Terrane, China: Implications for the effects of ambient mantle on subduction zone …
Z Zhang, SS Chen, DW Sun, S Gao - Bulletin, 2024 - pubs.geoscienceworld.org
The petrogenesis of Nb-enriched basalts (NEBs) is controversial. NEBs are generally
considered to form by melting of either a mixed enriched and depleted mantle source or a …
considered to form by melting of either a mixed enriched and depleted mantle source or a …
The origin of highly radiogenic Hf isotope compositions in 3.33 Ga Commondale komatiite lavas (South Africa)
JE Hoffmann, AH Wilson - Chemical Geology, 2017 - Elsevier
Drill core samples from the 3.33 Ga high-alumina-type Commondale komatiites from the
southern Kaapvaal craton (South Africa) were analysed for major, trace elements and Hf …
southern Kaapvaal craton (South Africa) were analysed for major, trace elements and Hf …
[HTML][HTML] The Paleoarchean Buffalo River komatiites: Progressive melting of a single large mantle plume beneath the growing Kaapvaal craton
Several Archean granitoid-greenstone terranes are exposed on the southeastern Kaapvaal
craton in South Africa, but they received little scientific attention compared to the archetypal …
craton in South Africa, but they received little scientific attention compared to the archetypal …
Highly siderophile elements in shergottite sulfides and the sulfur content of the martian mantle
Shergottite meteorites are ultramafic to mafic igneous rocks derived from partial melting of
distinct regions of the martian mantle. As such, they trace magmatic processes, including …
distinct regions of the martian mantle. As such, they trace magmatic processes, including …