中子层析成像对花岗岩三维非均质性分析的贡献

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Acta Geodynamica et Geomaterialia Pub Date : 2020-08-05 DOI:10.13168/agg.2020.0019

I. Zel

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引用次数: 5

摘要

使用中子层析成像方法对Westerly和捷克花岗岩（Mrakotin、Liberec和Brno正长岩）样品内部的云母空间分布进行了体积研究。所研究的花岗岩的云母和其他岩石形成矿物的中子衰减系数的显著差异产生了较大的中子射线照相对比，因此，使我们能够基于中子断层扫描重建程序对三维结构数据进行详细分析。获得了所研究的花岗岩中云母相的形态和空间分布。将层析成像数据与岩石力学研究中常用的其他实验方法（如光学和电子显微镜以及超声波剪切波测量）提供的结果进行了比较。讨论了应用中子层析成像方法研究类花岗岩的优点和局限性。文章信息

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Contribution of neutron tomography to 3D heterogeneity analysis of granitic rocks

Volumetric studies of mica spatial distribution inside samples of Westerly and Czech granites (Mrakotin, Liberec, and Brno syenite) were performed using a neutron tomography method. A significant difference in the neutron attenuation coefficients of mica and other rock-forming minerals of the granites studied yielded a large neutron radiography contrast and, as a result, allowed us to perform a detailed analysis of three-dimension structural data based on the neutron tomography reconstruction procedure. The morphology and spatial distribution of the mica phase within studied granites were obtained. Tomography data were compared to results provided by other experimental methods commonly used in rock mechanics research such as optical and electron microscopy, as well as ultrasonic shear-wave measurements. The benefits and limitations for application of the neutron tomography method for studies of granite like rocks are discussed. ARTICLE INFO

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来源期刊

Acta Geodynamica et Geomaterialia 地学-地球化学与地球物理

CiteScore

2.30

自引率

0.00%

发文量

期刊介绍： Acta geodynamica et geomaterialia (AGG) has been published by the Institute of Rock Structures and Mechanics, Czech Academy of Sciences since 2004, formerly known as Acta Montana published from the beginning of sixties till 2003. Approximately 40 articles per year in four issues are published, covering observations related to central Europe and new theoretical developments and interpretations in these disciplines. It is possible to publish occasionally research articles from other regions of the world, only if they present substantial advance in methodological or theoretical development with worldwide impact. The Board of Editors is international in representation.