Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis

Mudeungsan (Mount Mudeung) is an extinct volcano located in the southwestern part of South Korea that was formed in the Late Cretaceous period. This mountain, 1187 m above sea level, is adjacent to Gwangju Metropolitan City, which has a large population (about 1.4 million) and volcanic rocks, includ...

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Autores principales: Donghoon Seoung, Pyosang Kim, Hyeonsu Kim, Hyunseung Lee, Min Huh, Hyunwoo Lee, Yongmoon Lee
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:ea9c9b7707844f4a89226b7710ffe6bd2021-11-25T16:38:19ZMineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis10.3390/app1122107962076-3417https://doaj.org/article/ea9c9b7707844f4a89226b7710ffe6bd2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10796https://doaj.org/toc/2076-3417Mudeungsan (Mount Mudeung) is an extinct volcano located in the southwestern part of South Korea that was formed in the Late Cretaceous period. This mountain, 1187 m above sea level, is adjacent to Gwangju Metropolitan City, which has a large population (about 1.4 million) and volcanic rocks, including columnar joints, which form various types of outcrops. Although this mountain was listed as a national geopark in 2014 and a UNESCO Global Geopark in 2018, much basic research has yet to be carried out. In particular, there are no mineralogical studies of volcanic rock samples despite the well-preserved variety of volcanic rocks. For this study, X-ray diffraction analysis was conducted using rock samples from Mudeungsan columnar joints known as tuff. We report that the rocks are mostly dacite, mainly composed of quartz, plagioclase, and sanidine through Rietveld quantitative analysis. In particular, α-cristobalite, a crystalline polymorph of silica, appears in the columnar joint rocks, indicating that Mudeungsan experienced an explosive eruption during the formation of the mountain.Donghoon SeoungPyosang KimHyeonsu KimHyunseung LeeMin HuhHyunwoo LeeYongmoon LeeMDPI AGarticleMudeungsanX-ray diffractionRietveld quantificationcristobalitevolcanoTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10796, p 10796 (2021)
institution DOAJ
collection DOAJ
language EN
topic Mudeungsan
X-ray diffraction
Rietveld quantification
cristobalite
volcano
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
spellingShingle Mudeungsan
X-ray diffraction
Rietveld quantification
cristobalite
volcano
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
Donghoon Seoung
Pyosang Kim
Hyeonsu Kim
Hyunseung Lee
Min Huh
Hyunwoo Lee
Yongmoon Lee
Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
description Mudeungsan (Mount Mudeung) is an extinct volcano located in the southwestern part of South Korea that was formed in the Late Cretaceous period. This mountain, 1187 m above sea level, is adjacent to Gwangju Metropolitan City, which has a large population (about 1.4 million) and volcanic rocks, including columnar joints, which form various types of outcrops. Although this mountain was listed as a national geopark in 2014 and a UNESCO Global Geopark in 2018, much basic research has yet to be carried out. In particular, there are no mineralogical studies of volcanic rock samples despite the well-preserved variety of volcanic rocks. For this study, X-ray diffraction analysis was conducted using rock samples from Mudeungsan columnar joints known as tuff. We report that the rocks are mostly dacite, mainly composed of quartz, plagioclase, and sanidine through Rietveld quantitative analysis. In particular, α-cristobalite, a crystalline polymorph of silica, appears in the columnar joint rocks, indicating that Mudeungsan experienced an explosive eruption during the formation of the mountain.
format article
author Donghoon Seoung
Pyosang Kim
Hyeonsu Kim
Hyunseung Lee
Min Huh
Hyunwoo Lee
Yongmoon Lee
author_facet Donghoon Seoung
Pyosang Kim
Hyeonsu Kim
Hyunseung Lee
Min Huh
Hyunwoo Lee
Yongmoon Lee
author_sort Donghoon Seoung
title Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
title_short Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
title_full Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
title_fullStr Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
title_full_unstemmed Mineralogy of the Mudeungsan Tuff (Republic of Korea) Using Synchrotron X-ray Powder Diffraction and Rietveld Quantitative Analysis
title_sort mineralogy of the mudeungsan tuff (republic of korea) using synchrotron x-ray powder diffraction and rietveld quantitative analysis
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/ea9c9b7707844f4a89226b7710ffe6bd
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