Abstract
A sediment core (L2) from Larsemann Hills, Antarctica was analyzed for Biogenic Silica (BSi), Sand (%) and Total Organic Carbon (TOC). The 78 cm core length represents the time span of ∼8.3 cal ka BP. The values of BSi from the core show prominent high productivity from ∼8.3 to ∼6 cal ka BP in comparison to less productivity in mid-late Holocene (∼6 cal ka BP to recent). Moreover, high sand (%) infers the glacio-fluvial deposition from ∼8.3 to ∼5 cal ka BP TOC shows little variation through out the core, except in the upper ∼10 cm (∼4 cal ka BP) part wherein it is comparatively high. The increased TOC in the upper part of the core possibly indicates presence of algal mat due to exposure of the lake to the ice free (glacier free) conditions.
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Govil, P., Mazumder, A., Tiwari, A. et al. Holocene climate variability from lake sediment core in Larsemann Hills, Antarctica. J Geol Soc India 78, 30–35 (2011). https://doi.org/10.1007/s12594-011-0064-x
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DOI: https://doi.org/10.1007/s12594-011-0064-x