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Depletion of potassium and sodium in mantles of Mars, Moon and Vesta by core formation

Depletion of potassium and sodium in mantles of Mars, Moon and Vesta by core formation

E. S. Steenstra, N. Agmon, J. Berndt, S. Klemme, S. Matveev & W. van Westrenen ABSTRACT: The depletions of potassium (K) and sodium (Na) in samples from planetary interiors have long been considered as primary evidence for their volatile behavior during planetary...
The role of aluminium in the preservation of microbial biosignatures

The role of aluminium in the preservation of microbial biosignatures

Alan Levett, Emma J. Gagen, Hui Diao, Paul Guagliardo, Llew Rintoul, Anat Paz, Paulo M. Vasconcelos, Gordon Southam ABSTRACT: Demonstrating the biogenicity of presumptive microfossils in the geological record often requires sup- porting chemical signatures, including...
Quantitative FE-EPMA measurement of formation and inhibition of carbon contamination on Fe for trace carbon analysis

Quantitative FE-EPMA measurement of formation and inhibition of carbon contamination on Fe for trace carbon analysis

Yuji Tanaka1, Takako Yamashita, and Masayasu Nagoshi ABSTRACT: Hydrocarbon contamination introduced during point, line and map analyses in a field emission electron probe microanalysis (FE-EPMA) was investigated to enable reliable quantitative analysis of trace...

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