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首页> 外文期刊>Geochemistry, geophysics, geosystems >A new protocol for three-axis static alternating field demagnetization of rocks
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A new protocol for three-axis static alternating field demagnetization of rocks

机译:岩石三轴静态交变磁场去磁的新协议

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摘要

Static three-axis alternating field (AF) demagnetization is the most common method regularly implemented for removing magnetic components of rock samples. This method is so widely used that one of its main limitations, the acquisition of gyroremanence (GRM), is often not accounted for or even discussed. The presence of GRM likely interferes more than is recognized in accurate determination of the most stable remanence. The accepted method proposed by Dankers and Zijderveld (1981) for excluding GRM affected measurements requires nearly triple the amount of lab work, and by consequence, is almost never regularly implemented on large batches of samples. Here, we present a laboratory procedure and subsequent analysis (SI method) that removes the effects of GRM in static AF demagnetization without requiring extra laboratory work. This paper, therefore, describes a new standard protocol for efficient static AF demagnetization of rocks.
机译:静态三轴交变磁场(AF)消磁是通常用于去除岩石样品磁性成分的最常用方法。这种方法的应用如此广泛,以至于它的主要局限性之一,即回旋感(GRM)的获取,常常没有被考虑,甚至没有被讨论。 GRM的存在可能会比准确确定最稳定剩磁的干扰更大。 Dankers和Zijderveld(1981)提出的公认的排除GRM影响的测量的方法几乎需要三倍的实验室工作量,因此,几乎永远不会定期对大批样品实施。在这里,我们介绍了一种实验室程序和后续分析(SI方法),该方法消除了GRM在静态AF退磁中的影响,而无需进行额外的实验室工作。因此,本文描述了一种有效的岩石静态AF自动退磁的新标准协议。

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