Exploring the application of dual-energy CT to discriminate sediment facies in a varved sequence

IF 1.9 3区 地球科学 Q1 GEOLOGY Depositional Record Pub Date : 2024-02-01 DOI:10.1002/dep2.271
M. Martini, P. Francus, L. Di Schiavi Trotta, P. Letellier, M. Des Roches, P. Després
{"title":"Exploring the application of dual-energy CT to discriminate sediment facies in a varved sequence","authors":"M. Martini,&nbsp;P. Francus,&nbsp;L. Di Schiavi Trotta,&nbsp;P. Letellier,&nbsp;M. Des Roches,&nbsp;P. Després","doi":"10.1002/dep2.271","DOIUrl":null,"url":null,"abstract":"<p>Dual-energy X-ray computed tomography consists of imaging objects using two incident X-ray beams of different energy to distinguish the different compounds within a sample based on their density (electron density, <i>ρ</i><sub><i>e</i></sub>) and elemental composition (effective atomic number, <i>Z</i><sub><i>eff</i></sub>). The stoichiometric calibration for dual-energy X-ray computed tomography was already successfully implemented to identify single and homogeneous minerals easily and non-destructively. It is here applied for the first time to a more complex and heterogeneous sample, a varved sediment core with three distinct facies. The output of dual-energy X-ray computed tomography was compared against elemental geochemistry obtained at the same resolution using a micro-XRF core scanner. The three individual facies can be successfully differentiated using dual-energy X-ray computed tomography because their range of <i>ρ</i><sub><i>e</i></sub> and <i>Z</i><sub><i>eff</i></sub> values allow their discrimination. Correlations with elemental geochemistry are also discussed but are less conclusive, probably because of variations in grain size and porosity, and because these high resolution analyses were not performed at the exact same location. The paper not only eventually discusses the limitations when using dual-energy X-ray computed tomography on sediments but also demonstrates its potential to quantitatively study sediment cores in a non-destructive way.</p>","PeriodicalId":54144,"journal":{"name":"Depositional Record","volume":"10 1","pages":"231-244"},"PeriodicalIF":1.9000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/dep2.271","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Depositional Record","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/dep2.271","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Dual-energy X-ray computed tomography consists of imaging objects using two incident X-ray beams of different energy to distinguish the different compounds within a sample based on their density (electron density, ρe) and elemental composition (effective atomic number, Zeff). The stoichiometric calibration for dual-energy X-ray computed tomography was already successfully implemented to identify single and homogeneous minerals easily and non-destructively. It is here applied for the first time to a more complex and heterogeneous sample, a varved sediment core with three distinct facies. The output of dual-energy X-ray computed tomography was compared against elemental geochemistry obtained at the same resolution using a micro-XRF core scanner. The three individual facies can be successfully differentiated using dual-energy X-ray computed tomography because their range of ρe and Zeff values allow their discrimination. Correlations with elemental geochemistry are also discussed but are less conclusive, probably because of variations in grain size and porosity, and because these high resolution analyses were not performed at the exact same location. The paper not only eventually discusses the limitations when using dual-energy X-ray computed tomography on sediments but also demonstrates its potential to quantitatively study sediment cores in a non-destructive way.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
探索应用双能 CT 对变异序列中的沉积面进行判别
双能 X 射线计算机断层扫描是利用两束不同能量的入射 X 射线对物体进行成像,从而根据密度(电子密度,ρe)和元素组成(有效原子序数,Zeff)区分样品中的不同化合物。双能量 X 射线计算机断层扫描的化学计量校准已成功应用于简单、非破坏性地识别单一和均质矿物。本文首次将其应用于一个更加复杂和异质的样本,即具有三个不同面的变异沉积岩芯。双能 X 射线计算机断层扫描的输出结果与使用微型 XRF 岩心扫描仪在相同分辨率下获得的元素地球化学结果进行了比较。使用双能 X 射线计算机断层扫描可以成功地区分三个不同的岩层面,因为它们的 ρe 和 Zeff 值范围允许对它们进行区分。论文还讨论了与元素地球化学的相关性,但不太确定,这可能是由于粒度和孔隙度的变化,以及这些高分辨率分析不是在完全相同的位置进行的。本文不仅最终讨论了在沉积物上使用双能 X 射线计算机断层扫描时的局限性,而且还展示了它以非破坏性方式定量研究沉积物岩心的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
4.10
自引率
16.70%
发文量
42
审稿时长
16 weeks
期刊最新文献
Issue Information Issue Information The early–middle Cambrian siliciclastic tide-dominated succession in eastern Korea Preservation of groove mark striae formed by armoured mud clasts: The role of armour sediment size and bed yield stress Micritisation products in the inner ramp settings of the Abu Dhabi Lagoon
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1