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Probing Ancient Biosignatures: Laser Mass Spectrometric Analysis of the 3.33 Ga Josefsdal Chert Using Laboratory and Space-prototype Instrumentation

  • Authors: Salome Gruchola, Frances Westall, Luca N. Knecht, Peter Keresztes Schmidt, Andreas Riedo, Marek Tulej, Frédéric Foucher, Peter Wurz

Salome Gruchola et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 11.

Isotopes detected in the area shown in Figure 10. The most intense isotope peaks were fitted using a standard Gaussian fit (blue curve), from which the fit constants μ (mean) and σ (standard deviation) were obtained. Using these retrieved values in addition to the natural isotope abundances, the expected peaks (red curves) were added. The measured peak intensities agree well with the expected ones.

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