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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 E1.

Detected isotopes in the upper (younger) part of the studied JC sample using LMS-GT. The red vertical line indicates the expected isotope mass indicated in the title of each panel. The transparent red areas correspond to a range of ±30 ppm around the expected isotope mass.

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