Abstract—The time scale of the geomagnetic polarity is the quintessence of our knowledge about the changes in the polarity of the Earth’s magnetic field in the geological past. The pattern of the Earth’s magnetic field polarity reversals is relatively well known for the Cenozoic, Mesozoic, and Late Paleozoic. However, our understanding of the behavior of geomagnetic polarity in the more ancient epochs is non-systematic and fragmentary. Obtaining the reliable high-quality information for the Lower and Middle Paleozoic should become the next important step.This paper compiles the main data yielded by recent studies on magnetic stratigraphy of the Lower Paleozoic (Cambrian and Ordovician) of the Siberian Platform and other regions conducted by our team and our colleagues. The synthesis of these data allows us to propose a working model of the Early Paleozoic magnetic polarity time scale which embodies the current knowledge about the character of changes in the geomagnetic field polarity on this interval of the geological time. The process of geomagnetic field polarity reversals in the Early Paleozoic is described by the following most important characteristics: (a) the existence of a superchron of reversed polarity during a significant part of the Early and Middle Ordovician (the third Phanerozoic superchron Moyero); (b) a high (probably peaking in the Phanerozoic) frequency of the geomagnetic reversals in the Middle Cambrian; (c) a decrease in the frequency of geomagnetic reversals in Late Cambrian and Tremadocian with the approach of the superchron; (d) the presence of anomalous period in the behavior of the geomagnetic field close to the Phanerozoic/Precambrian boundary; and (e) the absence of a double superchron in the Ordovician (Algeo, 1996).

中文翻译：

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开发寒武纪和奥陶纪磁极时间尺度：当前数据和综合尝试

摘要——地磁极性的时间尺度是我们对地球磁场极性在地质历史上的变化认识的精髓。地球磁场极性反转的模式在新生代、中生代和晚古生代相对众所周知。然而，我们对更古老时代地磁极性行为的理解是非系统和零碎的。获取下、中古生界可靠的高质量信息应成为下一个重要步骤。 本文汇集了近年来西伯利亚地台下古生界（寒武系和奥陶系）等地区磁性地层学研究的主要资料。由我们的团队和我们的同事。这些数据的综合使我们能够提出早古生代磁极性时间尺度的工作模型，该模型体现了当前关于该地质时间间隔上地磁场极性变化特征的知识。早古生代地磁场极性反转的过程可以用以下最重要的特征来描述： (a) 早、中奥陶世的重要部分（第三显生代超纪元 Moyero）存在一个极性反转的超纪元；(b) 中寒武纪地磁反转的高频率（可能在显生宙达到峰值）；(c) 晚寒武世和特雷马多世的地磁反转频率随着超年代的临近而减少；(d) 在显生宙/前寒武纪边界附近的地磁场行为中存在异常周期；(e) 奥陶纪不存在双超历时 (Algeo, 1996)。