Acquisition of Thermoviscous Remanent Magnetization on Geologically Significant Time Scales

PI将检查热粘性的获取 在地质意义上的时间尺度上恢复磁化。 为了实现这个目标，他将研究随机定向的鹅卵石 以及暴露在地球磁场中的巨石 在已知的时间间隔内。 热退磁技术 将被用来确定的解封温度的 这些岩石中的次级磁性成分。 古地磁 此外，亦会进行多项岩石磁性研究。 加州的地质景观多种多样， 合适的地点，暴露时间从几个星期到 几乎一百万年。 这些地点包括滑坡 沉积物、冰碛物以及海洋、河流和湖泊沉积物 既有文化底蕴，也有文化底蕴。 这项工作将提供 关于时间和环境之间关系的关键信息 在获得热粘滞回热时， 磁化 需要这些信息来提高我们的 了解热磁化过程，并帮助 热退磁资料的解释。

The PI will examine the acquisition of thermoviscous remanent magnetization on geologically significant time scales. The accomplish this goal, he will study randomly-oriented cobble and boulders that have been exposed to the earth's magnetic field for known intervals of time. Thermal demagnetization techniques will be used to determine the unblocking temperature of the secondary magnetic component in these rocks. The paleomagnetic studies will be complemented by various rock magnetic studies. The varied geological landscape of California includes many suitable sites with exposure ages ranging from a few weeks to almost one million years. These sites include landslide deposits, glacial tills, and marine, fluvial and lacustrine deposits as well as cultural deposits. The work will provide critically-needed information about the relationship between time and temperature in the acquisition of a thermoviscous remanent magnetization. Such information is needed to increase our understanding of thermal magnetization processes and to aid in the interpretation of thermal demagnetization data.