Petrogenic OC used for biosynthesis of sediment core HH14-897-GC-MF

• Main Authors: Ruben, Manuel Jannis, Hefter, Jens, Schubotz, Florence, Geibert, Walter, Butzin, Martin, Gentz, Torben, Grotheer, Hendrik, Forwick, Matthias, Szczuciński, Witold, Mollenhauer, Gesine
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Ancient carbon; arctic fjord; Carbon; organic; fraction; standard error; Carbon cycle; compound specific radiocarbon dating; Depth; bottom/max; sediment/rock; top/min; GC; Gravity corer; HH14-897-GC-MF; Hornsund; Spitsbergen; Intact polar lipids
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.946018; https://doi.org/10.1594/PANGAEA.946018

Based on the CSRD obtained by AMS the contribution of fossil OC (F14C=0; [%]) used for bacterial membrane lipid synthesis (IPL-FA) was calculated using an isotope mass balance. For the estimation two endmembers were used: 1) Fossil carbon (F14C=0) – OC derived from the local bedrock 2) Recently synthesized carbon (F14C~1) – OC derived from primary production in the water column. Detailed F14C-values were taken from surface DIC age model, depending on the year of sediment deposition (based on Pb+Cs age model).