Temporal evolution of organic carbon and lipid content and derived SST of sediment core GIK23258-2, Norwegian Sea ...

• Main Authors: Martrat, Belén, Grimalt, Joan O, Villanueva, Joan, van Kreveld, Shirley A, Sarnthein, Michael
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2003
• Subjects: Kasten corer; M7/2; Meteor 1986; Norwegian Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.780467; https://doi.pangaea.de/10.1594/PANGAEA.780467

Lipids are used for the evaluation of the different organic matter contributions in the north eastern Norwegian sea (M23258 site; 75ºN, 14ºE) over the last 15,000 years. Development of a mass balance model based on the down core quantification of the C37 alkenones, the odd carbon numbered n-alkanes (Aodd) and the unresolved complex mixture of hydrocarbons (UCM) has allowed three main organic matter inputs involving marine, continental and ancient reworked organic matter to be recognized. The model shows a good agreement between measured and reconstructed TOC values. Similarly, a strong parallelism is observed between predicted components such as marine TOC and carbonate content (CaCO3), which was determined independently. Representation of the model results within a time-scale based on 15 AMS-14C measurements shows that the main changes in organic matter constituents are coincident with the major climatic events of the last 15,000 a. Thus, the predominance of reworked organic matter is characteristic of ... : Supplement to: Martrat, Belén; Grimalt, Joan O; Villanueva, Joan; van Kreveld, Shirley A; Sarnthein, Michael (2003): Climatic dependence of organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years. Organic Geochemistry, 34(8), 1057-1070 ...