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Titel Multifractal analysis of mercury inclusions in quartz by X-ray computed tomography
VerfasserIn T. Shibata, T. Maruoka, T. Echigo
Medientyp Artikel
Sprache Englisch
ISSN 2198-5634
Digitales Dokument URL
Erschienen In: Nonlinear Processes in Geophysics Discussions ; 1, no. 2 ; Nr. 1, no. 2 (2014-08-14), S.1365-1379
Datensatznummer 250115121
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/npgd-1-1365-2014.pdf
 
Zusammenfassung
In order to refine our understanding how fluid inclusions were trapped in the host minerals, we non-destructively observed mercury inclusions (liquid Hg0) in quartz samples using X-ray computed tomography (CT) technique. The X-ray CT apparatus can observe internal structures of the samples and give cross-sectional images from the transmission of the X-rays through the samples. From the cross-sectional images, we obtained three-dimensional spatial distributions of mercury inclusions, and quantitatively analyzed them using fractal and multifractal methods. Although the samples were from different mines, the resultant fractal dimensions were about 1.7 for the samples. The fractal dimensions were also close to those predicted by diffusion-limited aggregation models and percolation theory, which are controlled by the irreversible kinetics. Then, the mercury-bearing fluids were not primary fluid inclusions, but migrated into the pre-existing cracks of quartz crystals by diffusion processes.
 
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