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.***

1160854 Smirnov地球科学仪器和设施计划拨款支持在密歇根理工大学购买2G Enterprises 4K-755高分辨率超导岩石磁力仪（SRM），具有小入口孔（6 mm）。 小口径SRM允许古（前寒武纪）硅酸盐单晶托管磁性和顺磁性细粒矿物包裹体的古地磁方向和古强度分析。 这些火成相的单晶体很可能保存着地球最原始的记录？在前寒武纪岩石中进行的古地磁强度测量，迄今为止还很少有可靠的。 小口径固体火箭发动机的分析灵敏度使建议的测量成为可能。 PI拥有大量的斜长石分离物，这些斜长石分离物来自于在这个词周围取样的前寒武纪岩脉（例如，2.45 Ga Burakovka岩脉（俄罗斯）、2.9 Ga Munni-Munni侵入体和2.42 Ga Widgiemooltha岩脉（西澳大利亚）、2.37 Ga班加罗尔岩脉和2.2 Ga Mahhubnagar岩脉（印度）以及1.1 Ga Portage湖玄武岩（美国））。 PI已经做好准备，立即利用所要求的小口径SRM进行NSF/PNAS资助的关于地球性质的研究。的早期磁场与前寒武纪构造和地球发电机的产生和早期行为的影响;磁场屏蔽地球表面从高度活跃的太阳风，并允许地球的演变？的生物群。 该仪器将是美国学术实验室中的第二台此类仪器。 此次收购的基础设施影响对美国古地磁研究界非常重要。 该仪器将补充现有的古地磁分析设备在PI？的实验室和服务于一个活跃的学生研究小组，包括一个活跃的PI-本科生指导计划在MTU。*