The Earth appears non-chondritic in its abundances of refractory lithophile Molybdenum isotopes a novel tracer for recycling?
Join ResearchGate to find the people and research you need to help your work. timing of metamorphic transformations. The 'fluid' signature is seen most clearly in depleted samples Our samples display a positive correlation of δ98/95MoNIST 3134 with Mo/Ce, from compositions close to typical mantle (−0.2‰ and 0.03, r... Fluids released from subducted slabs impart characteristic geochemical signatures on volcanic arc magmas and residual slabs transported into the deeper mantle. However, the effect of variations in the structural environment of Mo in the silicate liquid, especially as a function of valence state, on Mo isotope fractionation remained poorly explored. Research output: Contribution to journal › Article (Academic Journal). Previous work has shown that Mo isotopes measurably fractionate between metal and silicate liquids, even at temperatures appropriate for core formation. Thus... IntroductionSimple Vs. Complex Models for Melt Production in the MantleHow do We Determine the Melting Rate?Melting Rates and Geodynamic ProcessesPorosity Of the Melting RegionConclusions The Catalina Schist, well-studied for its tectonometamorphic history and geochemical evolution, provides a field area in which to evaluate the extent of Li mobility in subduction-zone fluids and the degree to which Li isotopes can trace metamorphic fluid-rock interactions. Via decay of 238U to 230Th, this results in elevated (230Th/232T... We provide the first exploration of thallium (Tl) abundances and stable isotope compositions as potential tracers during arc lava genesis. Because titanium-46 and titanium-50 have different nucleosynthetic origins, this correlation suggests t... We use coupled 238U–230Th and 235U–231Pa disequilibria measurements from Pico Island, Azores to examine the melting behavior of the underlying mantle. Guangzhou Institute of Geochemistry Chinese Academy of Sciences, GEOMAR Helmholtz Centre for Ocean Research Kiel, Laboratoire G-Time, Département des Géosciences, Environnement et Société, Columbia Dept. differentiated planetesimals during its formation. This signature is present in the oldest TTG gneisses, the oldest ultramafic units of the Manfred Complex, and persists throughout much of the Archean until at least ~2.65 Ga. Understanding the spatial variability of initial ²⁶ Al/ ²⁷ Al in the solar system, i.e., ( ²⁶ Al/ ²⁷ Al) 0 , is of prime importance to meteorite chronology, planetary heat production, and protoplanetary disc mixing dynamics. Timothy Richard Elliott FRS is a Professor at the University of Bristol. Born: Timothy Richard Elliott.
temperatures (<200-250°C). W... Lithium isotopes have been proposed to have potential as a diagnostic tracer of recycling processes owing to the large fractionations that occur during the alteration of the oceanic crust. Due to our privacy policy, only current members can send messages to people on ResearchGate. We have found 31 people in the UK with the name Tim Elliott. Se has six stable isotopes, and is therefore well suited for isotope analysis by double spiking. In early Earth history, the continental crust was enriched in uranium. The Pampean flat-slab segment in the southern Central Andes represents an ideal setting at which to investigate how changes in the tectonic configuration of a subduction zone (convergence angles and rates, seamount subduction and shallowing slab angle) affects the recycling of subducted components to arc magmas. The duration of Earth's creation remains unknown. The Ni isotope compositions of iron met... A key requirement for any model of mantle evolution is accounting for the high 3He/4He ratios of many ocean island basalts compared to those of mid-ocean ridge basalts.
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