Journal article 23621 views 174 downloads
Phantom creation and analysis: Improving X-Ray microtomography scanning of soft sediment cores containing volcanic ash
E E Evans,
S M Davies,
R E Johnston,
Siwan Davies 
,
Richard Johnston
,
Richard Johnston
Journal of Physics: Conference Series, Volume: 849, Start page: 012012
Swansea University Authors:
Siwan Davies , Richard Johnston
-
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DOI (Published version): 10.1088/1742-6596/849/1/012012
Abstract
We present a series of soft sediment geological phantoms constructed to simulate volcanic ash deposits preserved within sediment cores. This study aimed to systematically discern which sediment components are most effectively detected and therefore characterised by X-ray microCT (μCT). Samples with...
| Published in: | Journal of Physics: Conference Series |
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| ISSN: | 1742-6588 1742-6596 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa34495 |
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| Abstract: |
We present a series of soft sediment geological phantoms constructed to simulate volcanic ash deposits preserved within sediment cores. This study aimed to systematically discern which sediment components are most effectively detected and therefore characterised by X-ray microCT (μCT). Samples with low or overlapping attenuation contrast but distinct morphologies such as coarse grained (>125 μm) ash within fine mud (<4 μm) can be manually separated using analysis software, while samples with high attenuation contrast display distinct horizons that are easily segmented using attenuation thresholds. We anticipate that this work will have broader applications within Earth Science to optimise the exploration of sediment with μCT analysis. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
012012 |