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Abstract
Lake sediment archives covering several glacial cycles are scarce in the Southern Hemisphere and they are challenging to date. Here we present the chronostratigraphy of the oldest continuous lake sediment archive in Tasmania, Australia; a 5.5 m and 270 ka (Marine Isotope Stage 8) sediment core from Lake Selina. We employ radiometric dating (radiocarbon and optically stimulated luminescence) and relative dating (geomagnetic and climate comparisons). Bayesian modeling of the radiometric ages reaches back to 80 ka (1.7 m) and relative dating using a dynamic programing algorithm allows dating of the full sequence. Elemental data, magnetic properties and beryllium isotopes from Lake Selina reveal a close fit to Antarctic ice core climate proxies. Weaker correlation during the Last Glacial Period (MIS 2–4) is attributed to additional local factors impacting Lake Selina proxies at a time of climate changes and human arrival into Tasmania. Over that period, full vector pale ....

Lake Selina , Southern Hemisphere , Marine Isotope Stage , Last Glacial Period , Uthigenic 10be 9be Ratio , Lake Sediment , Optically Stimulated Luminescence , ஏரி ஸெலீந , தெற்கு அரைக்கோளம் , கடல் ஐசோடோப்பு நிலை , கடந்த பனிப்பாறை காலம் ,