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DOI | 10.1029/2020GL091501 |
Frequent Polarity Reversals in the Cretaceous Normal Superchron | |
Dawen Zhang; Maodu Yan; Chunhui Song; Weilin Zhang; Xiaomin Fang; Bingshuai Li | |
2021-02-16 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The Cretaceous Normal Superchron (CNS), defined as a magnetic quiet zone spanning from ∼126 to ∼84 Myr, is often used to understand the Earth's geodynamo processes. However, whether there were polarity reversals within the CNS remains contentious. This paper presents the youngest detrital zircon U‐Pb age‐constrained magnetostratigraphic study of the Cretaceous Khorat Group for two sections (i.e., Ban Phonngam (BP) and Ban Nongpen (BN)) in Vientiane, Laos. Both sections are characterized by the prominent long normal‐polarity zones that are correlated to the CNS. Interestingly, six (four) short primary reversed horizons were identified within the BP (BN) section. Integrated with other reported reversed events, there likely at least five globally and two single reported reversed‐polarity events or clusters of events have happened within the CNS. The confirmation of frequent reversed polarities within the two parallel sections will provide a new comprehensive understanding of the Earth's geodynamic behavior during the CNS. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/315704 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Dawen Zhang,Maodu Yan,Chunhui Song,et al. Frequent Polarity Reversals in the Cretaceous Normal Superchron[J]. Geophysical Research Letters,2021. |
APA | Dawen Zhang,Maodu Yan,Chunhui Song,Weilin Zhang,Xiaomin Fang,&Bingshuai Li.(2021).Frequent Polarity Reversals in the Cretaceous Normal Superchron.Geophysical Research Letters. |
MLA | Dawen Zhang,et al."Frequent Polarity Reversals in the Cretaceous Normal Superchron".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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