(Table 1) Radiocarbon and OSL ages of sediment cores C1-C5 drilled during the COAST expedition to Cape Mamontov Klyk in April 2005 ...

• Main Authors: Winterfeld, Maria, Schirrmeister, Lutz, Grigoriev, Mikhail N, Kunitsky, Victor V, Andreev, Andrei A, Murray, Andrew Sean, Overduin, Pier Paul
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; Lithologic unit/sequence; Environmental feature; Sample code/label; Height above sea level; DEPTH, sediment/rock; Core; Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated standard deviation; Laboratory code/label; Reference/source; Drilling/drill rig; Sampling by hand; Age, 14C AMS; Age, optical stimulated luminescence OSL; Age, infrared stimulated luminescence IR-OSL; RU-Land_2005_COAST; RU-Land_2003_Lena; AWI Arctic Land Expedition; International Polar Year 2007-2008 IPY; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; International Polar Year; IPY; laptev; Laptev Sea; lena delta; permafrost; Taymyr; Taymyr Peninsula
• Online Access: https://dx.doi.org/10.1594/pangaea.841929; https://doi.pangaea.de/10.1594/PANGAEA.841929

The palaeoenvironmental development of the western Laptev Sea is understood primarily from investigations of exposed cliffs and surface sediment cores from the shelf. In 2005, a core transect was drilled between the Taymyr Peninsula and the Lena Delta, an area that was part of the westernmost region of the non-glaciated Beringian landmass during the late Quaternary. The transect of five cores, one terrestrial and four marine, taken near Cape Mamontov Klyk reached 12 km offshore and 77 m below sea level. A multiproxy approach combined cryolithological, sedimentological, geochronological (14C-AMS, OSL on quartz, IR-OSL on feldspars) and palaeoecological (pollen, diatoms) methods. Our interpretation of the proxies focuses on landscape history and the transition of terrestrial into subsea permafrost. Marine interglacial deposits overlain by relict terrestrial permafrost within the same offshore core were encountered in the western Laptev Sea. Moreover, the marine interglacial deposits lay unexpectedly deep at 64 ... : Depth, sediment/rock was obtained by substracting the given depth (m b.s.l.) by the height of the water body (sea level to sea bottom, see 'elevation'). For core C1, depth was given. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...