Triple oxygen and iron isotope composition of I-type cosmic spherules as new paleo-CO2 barome-ter and GPP proxy

• Applicant: Professor Dr. Andreas Pack
• Subject Area: Geology
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 455911125

In this project, we will develop and introduce a new tracer for the isotope composition of atmospheric oxygen. We will use the isotope composition (O, Fe) of I-type cosmic spherules to reconstruct the Δ'17O of atmospheric O2 throughout the Phanerozoic. The Δ'17O of air O2 provides important information about atmospheric CO2 levels and global bio production rates.

• DFG Programme: Research Grants
• Co-Investigator: Professor Dr. Gernot Arp