Universität zu Köln

Scheidt, Stephanie ORCID: 0000-0002-9370-2700, Egli, Ramon, Lenz, Matthias, Rolf, Christian, Fabian, Karl ORCID: 0000-0002-3504-3292 and Melles, Martin ORCID: 0000-0003-0977-9463 (2021). Mineral Magnetic Characterization of High-Latitude Sediments From Lake Levinson-Lessing, Siberia. Geophys. Res. Lett., 48 (10). WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1944-8007

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Abstract

Levinson-Lessing Lake in northern Central Siberia is a sedimentary archive characterized by continuous, widely constant sedimentation at high rates (0.7 m ka(-1) for >32 ka). This study provides the first evidence of the suitability of the lake ' s sediments for paleomagnetic analyses using the 46-m-long core Co1401. Although the lowermost 8 m are disturbed, the upper 38 m of Co1401 provide the preconditions for an exceptional, high-resolution paleomagnetic record located within the tangent cylinder of the inner core. High-resolution analyses of magnetic susceptibility, anhysteretic remanent magnetization, isothermal remanent magnetization, and hysteresis parameters show largely uniform mineral magnetic properties. First-order reversal curves indicate magnetite particles in pseudo-single domain state are the main remanence carrier, supplemented by single-domain particles, originating likely from magnetotactic bacteria. Above 6.7 m, the bulk magnetic mineralogy is slightly harder than below and initial greigite formation occurs. However, the main remanence carriers are still of detrital origin.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Scheidt, Stephanie UNSPECIFIED orcid.org/0000-0002-9370-2700 UNSPECIFIED Egli, Ramon UNSPECIFIED UNSPECIFIED UNSPECIFIED Lenz, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Rolf, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Fabian, Karl UNSPECIFIED orcid.org/0000-0002-3504-3292 UNSPECIFIED Melles, Martin UNSPECIFIED orcid.org/0000-0003-0977-9463 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-587771
DOI:	10.1029/2021GL093026
Journal or Publication Title:	Geophys. Res. Lett.
Volume:	48
Number:	10
Date:	2021
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	1944-8007
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TAYMYR PENINSULA; REMANENCE CURVES; REVERSAL; PALEOMAGNETISM; MAGNETOFOSSILS; TEMPERATURE; COMPONENTS; DYNAMICS; DIAGRAMS; COMPLEX Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58777