Diatom record of sediment profile PG1214, East Greenland ...

• Main Authors: Cremer, Holger, Wagner, Bernd, Melles, Martin, Hubberten, Hans-Wolfgang
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2001
• Subjects: Composite Core; Piston corer Potsdam; GL-Land_1994; AWI Arctic Land Expedition; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Quaternary Environment of the Eurasian North QUEEN; East Greenland; Greenland; permafrost; Scoresby Sund
• Online Access: https://dx.doi.org/10.1594/pangaea.734138; https://doi.pangaea.de/10.1594/PANGAEA.734138

A 341 cm long sediment sequence was recovered from the unofficially named Raffles Sø on Raffles Ø, outer Scoresby Sund region, East Greenland. The sediment sequence consists in the upper part (0-230 cm) of a stratified gyttja enriched in organic carbon and biogenic silica whereas the lower core part (235-341 cm) is composed of terrigenous, consolidated glacio-limnic sediments. 14C-AMS measurements indicate that the sediment sequence represents the entire Holocene lake history from 10,030 calibrated radiocarbon years. The geochemical parameters (opal, total organic carbon (TOC), total nitrogen (TN)) and the total diatom concentration show similar developments during the Holocene, and reflect changes in biological production and nutrient input into the lake. These records clearly reveal a broad Holocene TOC-opal-maximum interval between 5200 and 1800 cal. yrs BP.The diatom flora consisted of 66 taxa representing 20 genera but only seven taxa were abundant and, sometimes, these were monospecifically dominant ... : Supplement to: Cremer, Holger; Wagner, Bernd; Melles, Martin; Hubberten, Hans-Wolfgang (2001): The postglacial environmental development of Raffles Sø, East Greenland: inferences from a 10,000 year diatom record. Journal of Paleolimnology, 26(1), 67-87 ...