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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

Journal of Physics: Conference Series, Volume: 849, Start page: 012012

Swansea University Author: Johnston, Richard

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...

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Published in: Journal of Physics: Conference Series
ISSN: 1742-6588 1742-6596
Published: 2017
Online Access: Check full text

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.
College: College of Engineering
Start Page: 012012