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- W2883249758 abstract "ABSTRACT We examined the radiocarbon ( 14 C) reservoir effect in Lake Kutubu using tephrochronology and terrestrial plant material to deliver a precise age-depth profile and sedimentation rates for this lake. Based on the presence of two tephra horizons (Tibito and Olgaboli), we found a reservoir age offset in sediments of between 1490 and 2280 14 C yr using the sediment ages derived from the lead-210 ( 210 Pb) dating method. The live submerged biological samples collected exhibited a higher reservoir age offset than the sediment. This is most likely a result of delayed transport of “bomb” 14 C from the atmosphere to aquatic and sedimentary system. The 14 C reservoir effect increased with distance from the lake inlet and also decreased with depth. Dissolution of 14 C-depleted carbon from surrounding limestone and direct in-wash of old soil or vegetation remnants from the catchment are the most likely causes of the 14 C reservoir effect. Based on limestone areas mapped in Papua New Guinea, we indicate lakes which may be subject to a significant 14 C reservoir effect. The results of this study demonstrate the magnitude of the 14 C reservoir effect in lakes and provide insights to the correct interpretation of past environmental and archaeological events in PNG." @default.
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- W2883249758 date "2018-07-13" @default.
- W2883249758 modified "2023-10-05" @default.
- W2883249758 title "Evaluating the Radiocarbon Reservoir Effect in Lake Kutubu, Papua New Guinea" @default.
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- W2883249758 doi "https://doi.org/10.1017/rdc.2018.49" @default.
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