The anisotropy of magnetic susceptibility as a method to study Quaternary deposits: theory and applications

IF 0.9 4区地球科学 Q3 GEOLOGY

Geological Quarterly Pub Date : 2024-03-14 DOI:10.7306/gq.1720

Artur Teodorski

{"title":"The anisotropy of magnetic susceptibility as a method to study Quaternary deposits: theory and applications","authors":"Artur Teodorski","doi":"10.7306/gq.1720","DOIUrl":null,"url":null,"abstract":"The anisotropy of magnetic susceptibility is used as a geophysical method, based on the non-uniform magnetic properties of rocks, within which it exploits the individual types of minerals, their quantity, and distribution in the rocks. The anisotropy of minerals may be a result of their crystalline structure or the shape of mineral grains. If the anisotropy is connected to the shape of the minerals, as in the case of magnetite, the axis of maximum magnetic susceptibility is perpendicular to the grain long axis. This indirectly allows determination of grain orientation in the rocks studied. Therefore, this method can be used to reconstruct the directions of transport of rock components, such as in loess, fluvial or ice-dammed sediments, and to determine the directions of ice-sheet movement based on glacial till studies. The method is also used in tectonic stress reconstruction, complementing the results of palaeomagnetic dating or the logging of borehole cores. The rapid, inexpensive measurement of anisotropy of magnetic susceptibility along with low human error in measurement has made this method competitive with traditional research methods<br /><br />","PeriodicalId":12587,"journal":{"name":"Geological Quarterly","volume":"2020 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geological Quarterly","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.7306/gq.1720","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The anisotropy of magnetic susceptibility is used as a geophysical method, based on the non-uniform magnetic properties of rocks, within which it exploits the individual types of minerals, their quantity, and distribution in the rocks. The anisotropy of minerals may be a result of their crystalline structure or the shape of mineral grains. If the anisotropy is connected to the shape of the minerals, as in the case of magnetite, the axis of maximum magnetic susceptibility is perpendicular to the grain long axis. This indirectly allows determination of grain orientation in the rocks studied. Therefore, this method can be used to reconstruct the directions of transport of rock components, such as in loess, fluvial or ice-dammed sediments, and to determine the directions of ice-sheet movement based on glacial till studies. The method is also used in tectonic stress reconstruction, complementing the results of palaeomagnetic dating or the logging of borehole cores. The rapid, inexpensive measurement of anisotropy of magnetic susceptibility along with low human error in measurement has made this method competitive with traditional research methods

查看原文本刊更多论文

作为研究第四纪矿床方法的磁感应强度各向异性：理论与应用

磁感应强度各向异性是一种地球物理方法，它以岩石的非均匀磁性为基础，利用岩石中矿物的种类、数量和分布。矿物的各向异性可能是其晶体结构或矿物晶粒形状造成的。如果各向异性与矿物的形状有关，如磁铁矿，则最大磁感应强度轴与晶粒长轴垂直。这就间接地确定了所研究岩石的晶粒取向。因此，这种方法可用于重建岩石成分的运移方向，如黄土、河流或冰坝沉积物中的运移方向，并根据冰川畋猎研究确定冰川运动的方向。该方法还可用于构造应力重建，补充古地磁测年或钻孔岩心测井的结果。磁感应强度各向异性测量快速、成本低廉、人为测量误差小，使该方法与传统研究方法相比具有竞争力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Geological Quarterly 地学-地质学

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The policy of the Geological Quarterly is to publish significant contributions of information and geological insight relevant to an international readership. The journal has been issued since 1957 at the Polish Geological Institute - National Research Institute and, at present, is the leading Earth sciences journal in Poland. All aspects of Earth and related sciences, and universal and broad regional rather than locally oriented topics are covered. The journal is intended to be an international forum for the exchange of information and ideas, particularly on important geological topics of Central Europe.