Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3389/feart.2021.764714 |
| Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran | |
| Kodama, Kenneth P. | |
| 通讯作者 | Kodama, KP (corresponding author)，Lehigh Univ, Dept Earth & Environm Sci, Bethlehem, PA 18015 USA. |
| 来源期刊 | FRONTIERS IN EARTH SCIENCE
 |
| EISSN | 2296-6463 |
| 出版年 | 2021 |
| 卷号 | 9 |
| 英文摘要 | A combined magnetostratigraphy for the Rainstorm Member of the Ediacaran Johnnie Formation was constructed using the sediment accumulation rates determined by rock magnetic cyclostratigraphy for three localities of the Rainstorm Member to provide a high resolution, time-calibrated record of geomagnetic field reversal frequency at a critical time period in Earth history. Two previously reported magnetostratigraphy records from Death Valley, California, the Nopah Range and Winters Pass Hills (Minguez et al., 2015), were combined with new paleomagnetic and cyclostratigraphic results from the Desert Range locality of the Rainstorm Member in south central Nevada, United States . The Johnnie oolite marker bed is at the base of each of the three sections and allows their regional correlation. The Nopah Range and Desert Range localities have similar sediment accumulation rates of similar to 5 cm/ka, so their stratigraphic sections can be combined directly. The Winters Pass Hills locality has a higher sediment accumulation rate of 8.4 cm/ka, therefore its stratigraphic positions are multiplied by 0.6 to combine with the Desert Range and Nopah Range magnetostratigraphy. The thermal demagnetization results from the Desert Range locality isolates characteristic remanent magnetizations that indicate two nearly antipodal east-west and shallow directions and a mean paleopole (11.7N, 348.4E) that is consistent with shallow Ediacaran directions. The Desert Range also yields a magnetic susceptibility rock magnetic cyclostratigraphy that records short eccentricity, obliquity, and precession astronomically-forced climate cycles in the Ediacaran. The high-resolution combined magnetostratigraphy with nearly meter-scale stratigraphic spacing (nominally 23 ka, based on the Desert Range sediment accumulation rate), indicates 11 polarity intervals in a cyclostratigraphy-calibrated duration of 849 ka, indicating a reversal frequency of 13 R/Ma. The Rainstorm Member records the Shuram carbon isotope excursion, hence its age is similar to 574 Ma. Given the recent cyclostratigraphy-calibrated reversal frequency of 20 R/Ma from the Zigan Formation (Levashova et al., 2021) at 547 Ma, our results show that reversal frequency was high but fluctuated during the Ediacaran. |
| 英文关键词 | magnetostratigraphy cyclostratigraphy johnnie formation ediacaran reversal frequency |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000739074100001 |
| WOS关键词 | ROCK MAGNETIC CYCLOSTRATIGRAPHY ; CARBON-ISOTOPE EXCURSION ; DOUSHANTUO FORMATION ; SOUTH CHINA ; PALEOMAGNETISM ; SUSCEPTIBILITY ; CONSTRAINTS ; DURATION |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS研究方向 | Geology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/375836 |
| 作者单位 | [Kodama, Kenneth P.] Lehigh Univ, Dept Earth & Environm Sci, Bethlehem, PA 18015 USA |
| 推荐引用方式 GB/T 7714 | Kodama, Kenneth P.. Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran[J],2021,9. |
| APA | Kodama, Kenneth P..(2021).Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran.FRONTIERS IN EARTH SCIENCE,9. |
| MLA | Kodama, Kenneth P.."Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran".FRONTIERS IN EARTH SCIENCE 9(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Kodama, Kenneth P.]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Kodama, Kenneth P.]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Kodama, Kenneth P.]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
