The palaeomagnetism of (Mesoproterozoic) Eriksfjord Group red beds, South Greenland: Multiphase remagnetization during the Gardar and Grenville episodes
文献类型：期刊论文
| 作者 | Piper, JDA; Thomas, DN; Share, S; Rui, ZQ |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 1999-03-01 |
| 卷号 | 136期号:3页码:739-756 |
| 关键词 | Gardar Greenland Grenville Mesoproterozoic palaeomagnetism red sediments |
| ISSN号 | 0956-540X |
| 文献子类 | Article |
| 英文摘要 | The Eriksfjord Group comprises similar to 3000 m of lavas and sediments rapidly deposited in a rift which developed within an Andean-type batholith in juxtaposition to the southern margin of the Laurentian Shield in South Greenland at ca. 1300 Ma. The lavas have been shown to preserve a detailed record of the geomagnetic field at the time of eruption, incorporating normal, reversed and transitional directions. This study has examined the magnetic properties of the intervening red sediments. They are found to possess a diagenetic remanence imparted by mediating fluids at later times. The impact of diagenesis is stratigraphically controlled: the base of the rift infill has magnetizations partially resident in magnetite which are either unstable to thermal cleaning or record a single polarity 'B' magnetization (D/I = 284/67 degrees, 31 samples, alpha(95) = 5.5 degrees, palaeopole at 244.1 degrees E, 47.5 degrees N, dp/dm = 7.5/9.1 degrees). This corresponds in polarity, and closely in direction, to remanence observed in mid-Gardar gabbro giant dykes and dyke swarms emplaced along the axis of the rift system at ca. 1160 Ma; the causative diagenetic magnetite appears to have grown from hydrothermal systems motivated by this magmatism in a sealed reservoir setting within the lower part of the rift infill. |
| WOS关键词 | POLAR WANDER TRACK ; RB-SR ; LAVA SUCCESSION ; PALEOMAGNETISM ; PROVINCE ; COMPLEX ; CANADA ; LAKE ; ILIMAUSSAQ ; MAGMATISM |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000079145700018 |
| 出版者 | BLACKWELL SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/75392]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Piper, JDA |
| 作者单位 | 1.Univ Liverpool, Dept Earth Sci, Geomagnetism Lab, Liverpool L69 7ZE, Merseyside, England 2.Kingston Univ, Sch Geol Sci, Kingston upon Thames KT1 2EE, Surrey, England 3.Chinese Acad Sci, Inst Geol, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Piper, JDA,Thomas, DN,Share, S,et al. The palaeomagnetism of (Mesoproterozoic) Eriksfjord Group red beds, South Greenland: Multiphase remagnetization during the Gardar and Grenville episodes[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,1999,136(3):739-756. |
| APA | Piper, JDA,Thomas, DN,Share, S,&Rui, ZQ.(1999).The palaeomagnetism of (Mesoproterozoic) Eriksfjord Group red beds, South Greenland: Multiphase remagnetization during the Gardar and Grenville episodes.GEOPHYSICAL JOURNAL INTERNATIONAL,136(3),739-756. |
| MLA | Piper, JDA,et al."The palaeomagnetism of (Mesoproterozoic) Eriksfjord Group red beds, South Greenland: Multiphase remagnetization during the Gardar and Grenville episodes".GEOPHYSICAL JOURNAL INTERNATIONAL 136.3(1999):739-756. |
入库方式： OAI收割
来源：地质与地球物理研究所
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