| Summary: | <p>This work presents unprecedented, high-resolution
palaeomagnetic data from the sedimentary record of Lake Levinson-Lessing,
the deepest lake in northern central Siberia. Palaeomagnetic analyses were
carried out on 730 discrete samples from the upper 38 m of the 46 m long
core Co1401, which was recovered from the central part of the lake.
Alternating field demagnetization experiments were carried out to obtain the
characteristic remanent demagnetization. The relative palaeointensity is
determined using the magnetic susceptibility, the anhysteretic remanent
magnetization, and the isothermal remanent magnetization for normalization
of the partial natural remanent magnetization. The chronology of Co1401
derives from correlation of the relative palaeointensity of 642 discrete
samples with the GLOPIS-75 reference curve, accelerated mass spectrometer
radiocarbon ages, and optically stimulated luminescence dating. This study
focuses on the part <span class="inline-formula">></span> 10 ka but also presents preliminary results
for the younger part of the core. The record includes the geomagnetic
excursions Laschamps and Mono Lake and resolves sufficient geomagnetic
features to establish a chronology that continuously covers the last
<span class="inline-formula">∼</span> 62 kyr. The results reveal continuous sedimentation at high
rates between 45 and 95 cm kyr<span class="inline-formula"><sup>−1</sup></span>. The low variability of the magnetic
record compared to datasets of reference records with lower sedimentation
rates may be due to a smoothing effect associated with the lock-in depths.
Because Co1401 was cored without core segment overlap the horizontal
component of the characteristic remanent magnetization can only be used with
caution. Nevertheless, the magnetic record of Co1401 is exceptional as it is
the only high-resolution record of relative palaeointensity and
palaeosecular variations from the Arctic tangent cylinder going back to
<span class="inline-formula">∼</span> 62 ka.</p>
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