Trace-element fractionation in Hadean mantle generated by melt segregation from a magma ocean

Article Abstract:

Early Archaean rocks from West Greenland are characterized by (super 142)Nd/(super 144)Nd ratios more radiogenic than those expected for the bulk silicate Earth (BSE). Mineral-melt portioning data for high pressure mantle minerals are used to demonstrate that the observed Nd and Hf signatures could be produced by segregation of melt from a crystallizing magma ocean at upper-mantle pressures early in Earth's history.

United States, Earth, Silicate minerals, Minerals, Minerals (Geology)

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The 'zero charge' partitioning behaviour of noble gases during mantle melting

Article Abstract:

The authors have investigated noble-gase geochemistry. They report that the noble gases are more incompatible than has been previously demonstrated.

United Kingdom, Research and Development in the Physical, Engineering, and Life Sciences, Industrial Gas Manufacturing, Industrial gases, Noble Gases, Earth Sciences, Analysis, Geochemistry, Gases, Rare, Melting points, Melting, Properties

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