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Acta Geodynamica et Geomaterialia

 
Title: CONTRIBUTION OF NEUTRON TOMOGRAPHY TO 3D HETEROGENEITY ANALYSIS OF GRANITIC ROCKS
 
Authors: Zel Ivan Yu., Petružálek Matěj, Kichanov Sergey E., Nazarov Kaunysh, Lokajíček Tomáš, Kozlenko Denis P., Turková Ivana, Kotrlý Marek and Onysko Radek
 
DOI: 10.13168/AGG.2020.0019
 
Full Text: PDF file (3.5 MB)
 
Keywords: Neutron tomography; mica spatial distribution; granite; heterogeneity; anisotropy; Bohemian Massif
 
Abstract: 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.