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Direct imaging of fluid flow in fault-related rocks by X-ray CT

By
T. Hirono
T. Hirono
Interactive Research Center of Science, Tokyo Institute of Technology, Tokyo 152-8551, Japan (e-mail: t-hirono@spa.att.ne.jp
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M. Takahashi
M. Takahashi
Rock Physics Team, Research Center for Deep Geological Environments, AIST, Tsukuba 305-8567, Japan
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S. Nakashima
S. Nakashima
Interactive Research Center of Science, Tokyo Institute of Technology, Tokyo 152-8551, Japan (e-mail: t-hirono@spa.att.ne.jp
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Published:
January 01, 2003

Abstract

Faults profoundly affect patterns and rates of fluid flow and solute transport in the geological environment. They may act as conduits, barriers or combined conduit-barrier systems. In order to elucidate the relationship between fluid flow properties and deformation mechanisms of fault-related rocks, we applied X-ray CT during laboratory permeameter measurements for direct imaging of fluid flow during permeability testing. A KI solution, which has high X-ray attenuation values, was used as a contrast medium for the advection imaging. Three-dimensional fluid flow distributions were measured for the studied fault-related rocks. Fault zones characterized by independent particulate flow as deformation mechanism act as conduits for fluid flow, whereas cataclastic fault zones act as barriers.

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Geological Society, London, Special Publications

Applications of X-ray Computed Tomography in the Geosciences

F. Mees
F. Mees
Ghent University, Belgium
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R. Swennen
R. Swennen
Physico-chemical Geology, K. U. Leuven, Belgium
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M. Van Geet
M. Van Geet
SCK-CEN, Belgium
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P. Jacobs
P. Jacobs
Ghent University, Belgium
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Geological Society of London
Volume
215
ISBN electronic:
9781862394636
Publication date:
January 01, 2003

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