Early Career: Acquisition of a High Sensitivity Superconducting Rock Magnetometer for Paleomagnetic and Paleointensity Research

早期职业生涯：购买高灵敏度超导岩石磁力计用于古地磁和古强度研究

• 批准号: 1160854
• 负责人: Aleksey Smirnov
• 金额: $ 33.42万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-03-01 至 2015-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1160854&HistoricalAwards=false
• 关键词: Early; Career; Acquisition; Sensitivity; Superconducting

1160854SmirnovThis Division of Earth Sciences Instrumentation and Facilities Program grant supports acquisition of a 2G Enterprises 4K-755 high-resolution superconducting rock magnetometer (SRM) with a small access bore (6 mm) at Michigan Technological University. The small bore SRM allows for paleomagnetic directional and paleointensity analysis of single crystals of ancient (Precambrian) silicates hosting magnetic and paramagnetic fine grained mineral inclusions. These igneous phase single crystals are likely to hold the most pristine record of Earth?s early magnetic field and yet to date very few reliable paleointensity measurements from Precambrian rocks have been made. The analytical sensitivity now available with a small bore SRM makes proposed measurements possible. The PI is in possession of numerous plagioclase separates from Precambrian dikes sampled around the word (e.g., the ~2.45 Ga Burakovka dikes (Russia), the ~2.9 Ga Munni-Munni intrusion and the ~2.42 Ga Widgiemooltha dikes (Western Australia), the ~2.37 Ga Bangalore dikes and the ~2.2 Ga Mahhubnagar dikes (India), and the ~1.1 Ga Portage Lake basalts (USA)) from previous NSF/EAR research support. The PI is well poised to immediately make use of the requested small bore SRM for NSF/EAR funded research on the nature of Earth?s early magnetic field with implications for Precambrian tectonics and the generation and early behavior of the geodynamo; the magnetic field which shields the Earth surface from the highly energized solar wind and allowed for the evolution of Earth?s biota. This instrument will be only the second of its kind in a U.S. academic laboratory. The infrastructural impacts of this acquisition are very significant for the U.S. paleomagnetic research community. The instrument will complement existing paleomagnetic analysis equipment in the PI?s lab and serve an active student research group including an active PI-undergraduate mentoring program at MTU.***

1160854Smirnovthis Earth Sciences仪器仪器和设施计划赠款支持2G企业4K-755高分辨率高分辨率超导岩石磁力计（SRM），并在密歇根州的技术大学中获得了小通道（6毫米）。 小孔SRM允许对古代（前寒武纪）硅酸盐的单晶的古磁方向和古显着分析，这些晶体载有磁性和顺磁性细粒矿物质夹杂物。 这些火成岩相很可能拥有地球早期磁场的最原始记录，但迄今为止，很少有从前寒武纪岩石获得的可靠的古显着测量。 现在，SRM少的分析灵敏度使提出的测量成为可能。 PI拥有许多斜长石与围绕单词采样的前寒武纪（例如，〜2.45 Ga Burakovka dikes（俄罗斯），〜2.9 Ga Munni-Munni入侵和〜2.42 Ga widgiemooltha dikes（西澳大利亚州），〜2.37 ga的ga ga，〜2.37 gaalore dikaig dikaig the 〜2.42 ga munni-munni Intrublion（俄罗斯）〜2.42 ga widgiemooltha dikaig 〜2.37 Dikes（印度）和以前的NSF/EAR研究支持的〜1.1 GA Portage Lake Basalts（美国）。 PI已准备好立即使用所需的小孔SRM用于NSF/EAR资助的关于地球早期磁场本质的研究，对前寒武纪构造以及Geodynamo的产生和早期行为的影响；磁场将地球表面遮挡了高能量的太阳风并允许地球生物群的演变。 该工具将仅是美国学术实验室中的第二种。 这次收购的基础设施影响对于美国古磁研究界非常重要。 该仪器将补充PI实验室中现有的古磁分析设备，并为一个活跃的学生研究小组提供服务，其中包括MTU的活跃的PI-Under Grady指导计划。***