Downcore variations of relative sulphur content, estimated by XRF counting, for CON01-603-2

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false3DOIDB.SDDB 10.1594/GFZ.SDDB.1036 Demory, Francois Oberhänsli, Hedi Nowaczyk, Norbert Gottschalk, Matthias Wirth, Richard Naumann, Rudolf Downcore variations of relative sulphur content, estimated by XRF counting, for CON01-603-2 Deutsches GeoForschungsZentrum GFZ 2006 Vereshchagin Long Cores Expedition 2001 R/V Vereshchagin S X-ray fluorescence 2006-09-15 eng Dataset 10.1016/j.gloplacha.2004.11.010 356 Datapoints text/tab-separated-values Increased presence of greigite (high SIRM/κLF) coincides with maximum sulphur contents observed at the beginning of interglacial stages (Fig. 11A). At similar levels in another sediment core of Lake Baikal, Watanabe et al. (2004) observed pyrite mineralization. They attributed these pyrite-rich levels to mineralization at sediment/water interface under anoxic bottom water conditions. However, we prefer to interpret the greigite as a result of magnetite transformation when sulphate reduction occurs in the interglacial sediments. Peak sulphur contents would therefore be due to sulphur mineralization within the sediment and would not result from an enrichment of the sediment in sulphur at the sediment/water interface. 53.9535 108.9129 53.9632 108.9139