Geomagnetic field excursion recorded 17 ka at Tianchi Volcano, China: New 40Ar/39Ar age and significance
文献类型：期刊论文
| 作者 | Singer, Brad S.1; Jicha, Brian R.1; He, Huaiyu2; Zhu, Rixiang2 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2014-04-28 |
| 卷号 | 41期号:8页码:2794-2802 |
| 关键词 | Geodynamo geochronology volcano China |
| ISSN号 | 0094-8276 |
| DOI | 10.1002/2014GL059439 |
| 文献子类 | Article |
| 英文摘要 | New Ar-40/Ar-39 dating of a comenditic lava atop Tianchi Volcano, China, indicates eruption at 17.10.9ka. The flow interior records a pair of transitional virtual geomagnetic poles and a low paleointensity of similar to 25T. Thus, it records a geomagnetic field excursion that is younger than the 41ka Laschamp or 32ka Auckland excursions. Implications are: (1) following a repose of several tens of kyr, Tianchi Volcano became highly active immediately following termination of the last glaciation maximum. The flare-up of silicic eruptions may reflect rapid deglaciation of the edifice. (2) A 17ka age for the Tianchi excursion provides the first direct radioisotopic evidence that excursional behavior, which is imprecisely dated and less well documented magnetically at several other sites, is a global feature of geodynamo behavior. (3) During the Brunhes chron, 13 well-dated excursions cluster into two periods, including seven between 17 and 212ka, and six between about 530 and 730ka. |
| WOS关键词 | INSTABILITY TIME-SCALE ; MONO LAKE ; AR-40/AR-39 GEOCHRONOLOGY ; REVERSAL EXCURSIONS ; NORTHEAST CHINA ; NEW-ZEALAND ; LAVA FLOW ; SEDIMENTS ; LASCHAMP ; CORE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000335809800018 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | U.S. NSF(EAR-0337684 ; U.S. NSF(EAR-0337684 ; EAR-1250446) ; EAR-1250446) ; U.S. NSF(EAR-0337684 ; U.S. NSF(EAR-0337684 ; EAR-1250446) ; EAR-1250446) ; U.S. NSF(EAR-0337684 ; U.S. NSF(EAR-0337684 ; EAR-1250446) ; EAR-1250446) ; U.S. NSF(EAR-0337684 ; U.S. NSF(EAR-0337684 ; EAR-1250446) ; EAR-1250446) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/85528]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Singer, Brad S. |
| 作者单位 | 1.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Singer, Brad S.,Jicha, Brian R.,He, Huaiyu,et al. Geomagnetic field excursion recorded 17 ka at Tianchi Volcano, China: New 40Ar/39Ar age and significance[J]. GEOPHYSICAL RESEARCH LETTERS,2014,41(8):2794-2802. |
| APA | Singer, Brad S.,Jicha, Brian R.,He, Huaiyu,&Zhu, Rixiang.(2014).Geomagnetic field excursion recorded 17 ka at Tianchi Volcano, China: New 40Ar/39Ar age and significance.GEOPHYSICAL RESEARCH LETTERS,41(8),2794-2802. |
| MLA | Singer, Brad S.,et al."Geomagnetic field excursion recorded 17 ka at Tianchi Volcano, China: New 40Ar/39Ar age and significance".GEOPHYSICAL RESEARCH LETTERS 41.8(2014):2794-2802. |
入库方式： OAI收割
来源：地质与地球物理研究所
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