Phantom creation and analysis: Improving X-Ray microtomography scanning of soft sediment cores containing volcanic ash

X-Ray Microscopy Conference 2016

Evans, E.E.^1,2,3 ; Davies, S.M.^1 ; Johnston, R.E.^2,3

Department of Geography, College of Science, Swansea University, Singleton Campus, Swansea, United Kingdom^1

Materials Research Centre, College of Engineering, Swansea University, Bay Campus, Swansea, United Kingdom^2

Advanced Imaging of Materials (AIM), College of Engineering, Swansea University, Bay Campus, Swansea, United Kingdom^3

关键词: Analysis softwares;    Attenuation contrast;    Coarse-grained;    Fine muds;    Sediment core;    Soft sediments;    Volcanic ash;    X ray microtomography;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/849/1/012012/pdf
DOI  :  10.1088/1742-6596/849/1/012012

来源: IOP

【 摘 要 】

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 (