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 (~35 cm) in the cave as 0.7 ± 0.2 cm/kyr.

在这项研究中，我们对之前确定的中欧捷克共和国洞穴沉积物中 Matuyama-Brunhes 磁反转的结果进行了重大改进。我们从位于捷克共和国东部的 Za Hajovnou 洞穴的沉积剖面中收集了离散样本。岩石磁性测量表明，大部分样品的磁性载体是磁赤铁矿。特征剩磁（ChRM）方向和相关的虚拟地磁极（VGP）路径表明，松山-布鲁内斯过渡边界在沉积物的 5.7 cm 范围内，位于采样沉积剖面的上部。该结果显示了从欧洲中部位置的极性转变的新的、更详细的行为。就全球磁数据而言，东非和北美西部之间的古极地迁移被确立为中欧古地磁记录的重要标志。过渡持续时间为 8.1 ± 0.2 kyr，逆转前兆发生在过渡前 4 ± 0.2 kyr。此外，我们估计洞穴中研究部分（~35 cm）的沉降速率为 0.7 ± 0.2 cm/kyr。