Acquisition of a Sensitive Magnetic Susceptibility/Anisotropy System for Investigating Red Bed Inclination Shallowing

获取用于研究红层倾角变浅的灵敏磁化率/各向异性系统

• 批准号: 9807099
• 负责人: Kenneth Kodama
• 金额: $ 2.32万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-01 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9807099&HistoricalAwards=false
• 关键词: Acquisition; Sensitive; Magnetic; Susceptibility; Anisotropy

9807099 Kodama This grant provides partial support for the cost of acquiring a sensitive magnetic susceptibility/anisotropy system for the paleomagnetics laboratory at Lehigh University. The addition of the susceptibility/anisotropy system at Lehigh University will allow sensitive measurements of magnetic susceptibility and anisotropy of magnetic susceptibility (AMS) by the PI (Kodama) and his graduate students. These data will be important for developing a technique to identify and correct inclination shallowing of chemical remanent magnetizations (CRM) carried by hematite in red beds. Detailed AMS measurements of natural red bed samples and CRMs produced in the laboratory will be used in conjunction with remanence anisotropy measurements to determine empirical and test theoretical relationships between AMS and remanence anisotropy. The results will be used to understand the cause of anomalously shallow inclinations observed in Tertiary and Cretaceous red beds from central Asia. AMS measurements will also be important to a study initiated recently of the Nanaimo Group sediments in Vancouver. The anomalously shallow inclinations in these rocks have been used to provide support for the Baja British Columbia hypothesis of major terrane motions along the western margin of North America. ***

9807099 Kodama 这笔赠款为利哈伊大学古地磁实验室购买敏感磁化率/各向异性系统的费用提供部分支持。 理海大学增加的磁化率/各向异性系统将允许 PI (Kodama) 及其研究生对磁化率和磁化率各向异性 (AMS) 进行灵敏测量。这些数据对于开发识别和纠正红层中赤铁矿所携带的化学剩磁（CRM）倾斜浅化的技术非常重要。天然红层样品和实验室生产的 CRM 的详细 AMS 测量将与剩磁各向异性测量结合使用，以确定 AMS 和剩磁各向异性之间的经验关系并测试理论关系。研究结果将用于了解中亚第三纪和白垩纪红层中观察到的异常浅倾斜的原因。 AMS 测量对于最近启动的温哥华纳奈莫群沉积物的研究也很重要。这些岩石中异常浅的倾斜度已被用来为北美洲西缘主要地体运动的巴哈不列颠哥伦比亚省假说提供支持。 ***