Results 1 to 10 of about 10,706 (208)
Dynamical geochemistry of the mantle [PDF]
Solid Earth, 2011 The reconciliation of mantle chemistry with the structure of the mantle inferred from geophysics and dynamical modelling has been a long-standing problem. This paper reviews three main aspects. First, extensions and refinements of dynamical modelling and
G. F. Davies
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Trace-element geochemistry of mantle olivine and application to mantle petrogenesis and geothermobarometry [PDF]
Chemical Geology, 2010 Abstract Trace-element compositions of olivine from 75 mantle rocks of diverse origin, including xenoliths from kimberlites, basaltic lavas and orogenic peridotites, were determined by laser ablation ICP-MS to study systematic variations between mantle lithologies, partitioning mechanisms in olivine and their potential for geothermobarometry and ...
Jan C M De Hoog, D H Cornell
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Carbonated mantle peridotites represent a hidden sink for subducted CO2 [PDF]
Nature CommunicationsSubduction of carbon rich sediments and crust at convergent plate boundaries exerts a crucial control on Earth’s mantle chemistry and surface habitability.
Elliot J. Carter +6 more
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Emissions of mantle helium and abiotic methane at newly discovered black smokers along the Central Indian ridge (12°S–16°S) [PDF]
Scientific ReportsVolatiles emitted from black smokers provide crucial insights into mantle and hydrothermal processes. This study investigated the Cheoeum (CVF) and MIRAE-2 (M2VF) vent fields in the 12–16°S region of the Central Indian Ridge (CIR) using RV ISABU and ROV ...
Heejun Kim +8 more
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Insights Into Mantle Plume Geochemistry From Machine Learning
Geochemistry, Geophysics, GeosystemsOceanic island basalts are the products of mantle plume melting and their chemistry provides insights into the Earth's deep interior. We report a statistical and machine learning study of 8 radiogenic isotopes and 19 incompatible trace element ratios in ...
William M White, Matthew G Jackson
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IODP Expedition 330: Drilling the Louisville Seamount Trail in the SW Pacific [PDF]
Scientific Drilling, 2013 Deep-Earth convection can be understood by studying hotspot volcanoes that form where mantle plumes rise up and intersect the lithosphere, the Earth's rigid outer layer.
A. A. P. Koppers +3 more
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Solid Earth Sciences, 2021 We report systematical zircon U–Pb datings, Hf isotopic data, major and trace element date on the Zhangshiying (ZSY) and the Taishanmiao (TSM) two plutons at the southern margin of the North China Craton (NCC), in order to investigate their petrogenesis ...
Zhuang Zhao +3 more
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Geochemistry, Geophysics, Geosystems, 2021 The Earth's upper mantle is isotopically heterogeneous over large lengthscales, but the lower limit of these heterogeneities is not well quantified. Grain scale trace elemental variability has been observed in mantle peridotites, which suggests that ...
Benjamin L. Byerly +2 more
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Geochemistry, Geophysics, Geosystems, 2021 Melt inclusions with large, positive Sr anomalies have been described in multiple tectonic settings, and the origins of this unusual geochemical feature are debated.
O. E. Anderson +7 more
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Research progress of mantle plume
地震科学进展, 2021 Since the mantle plume hypothesis was proposed，it has been controversial in academia，and there is no unified answer to its existence. In this paper，the origin of the mantle plume is elaborated in detail.
Hang Du +4 more
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