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Evidence of the Matuyama-Brunhes transition in cave sediment in Central Europe
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SYSNO ASEP 0552925 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evidence of the Matuyama-Brunhes transition in cave sediment in Central Europe Author(s) Ucar, H. (CZ)
Kletetschka, G. (CZ)
Kadlec, Jaroslav (GFU-E) ORCID, RIDSource Title Quaternary International. - : Elsevier - ISSN 1040-6182
Roč. 604, December (2021), s. 16-27Number of pages 12 s. Publication form Print - P Language eng - English Country GB - United Kingdom Keywords paleomagnetism ; Matuyama-Brunhes ; magnetic reversal ; cave ; sediments Subject RIV DB - Geology ; Mineralogy OECD category Geology Method of publishing Open access Institutional support GFU-E - RVO:67985530 UT WOS 000697562500002 EID SCOPUS 85110544622 DOI 10.1016/j.quaint.2021.07.005 Annotation In this study, we offer significant improvement over previous results that identified the Matuyama-Brunhes magnetic reversal in cave sediments from the Czech Republic in Central Europe. We collected discrete samples from the sedimentary profile in Za Hajovnou cave located in the eastern part of the Czech Republic. The rock magnetism measurements indicated that the magnetic carrier of most of the samples is maghemite. Characteristic remanent magnetization (ChRM) directions and related virtual geomagnetic pole (VGP) paths indicated that the Matuyama-Brunhes transition boundary was within 5.7 cm of the sediment, located in the upper part of the sampled sedimentary section. This result showed a new, more detailed behavior of the polarity transition from that of the central European location. The migration of the paleopole between eastern Africa and western North America was established as a significant marker for the central European paleomagnetic record in terms of global magnetic data. The transition duration was 8.1 +/- 0.2 kyr, and the precursor of the reversal occurred 4 +/- 0.2 kyr before the transition. In addition, we estimated the sedimentation rate of the studied section (similar to 35 cm) in the cave as 0.7 +/- 0.2 cm/kyr. Workplace Geophysical Institute Contact Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/abs/pii/S1040618221003864
Number of the records: 1