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Chemical weathering of granite in ice and its implication for weathering in polar regions

Cited 2 time in wos
Cited 2 time in scopus

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dc.contributor.authorChung, Hyun Young-
dc.contributor.authorJung, Jaewoo-
dc.contributor.authorLee, Du Hyeong-
dc.contributor.authorKim, Sunghan-
dc.contributor.authorLee, Min Kyung-
dc.contributor.authorLee, Jae Il-
dc.contributor.authorYoo, Kyu-Cheul-
dc.contributor.authorLee, Yong Il-
dc.contributor.authorKim, Kitae-
dc.date.accessioned2021-05-12T08:16:28Z-
dc.date.available2021-05-12T08:16:28Z-
dc.date.issued2020-02-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11982-
dc.description.abstractRecently, it has been reported that some chemical reactions are enhanced in below-freezing conditions. Despite the high denudation typical of polar regions, chemical weathering that occurs under ice has not been investigated. In this study, we investigated the dissolution of granite in ice. The mixture of granite and deionized water (DW) or solution adjusted to pH 2 or 3 was split into two groups: the test group was frozen at -20 °C, while the control was maintained at room temperature. After 29 days of batch experiments, the filtrate was analyzed to measure the concentrations of cations and silica. The filtered powder was analyzed to investigate the mineral compositions and crystallinities of the granite before and after the experiments. Despite the low temperature, a significant quantity of cations (Na+, K+, Mg2+, Ca2+) were dissolved out, even from the ice samples. During X-ray diffraction (XRD) analysis, the decreased crystallinities of granite in ice samples were identified regardless of the pH condition. To verify the observed freeze concentration effect, the concentration of granite in the ice grain boundaries was observed using optical microscopy with a cold chamber. The low concentration of silica in the ice samples could explain the silica anomaly in polar regions. This study also provides a new perspective for the dissolution mechanism in polar regions.en_US
dc.languageEnglishen_US
dc.language.isoen_USen_US
dc.subjectGeochemistry & Geophysicsen_US
dc.subjectMineralogyen_US
dc.subjectMining & Mineral Processingen_US
dc.subject.classification기타()en_US
dc.titleChemical weathering of granite in ice and its implication for weathering in polar regionsen_US
dc.title.alternative얼음에서 일어나는 화강암의 화학적 풍화작용과 극지방 풍화작용에 대한 영향en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationChung, Hyun Young, et al. 2020. "Chemical weathering of granite in ice and its implication for weathering in polar regions". <em>MINERALS</em>, 10(2): 185-195.-
dc.citation.titleMINERALSen_US
dc.citation.volume10en_US
dc.citation.number2en_US
dc.identifier.doi10.3390/min10020185-
dc.citation.startPage185en_US
dc.citation.endPage195en_US
dc.description.articleClassificationSCIE-
dc.description.jcrRateJCR 2018:31.579en_US
dc.subject.keywordchemical weatheringen_US
dc.subject.keyworddissolutionen_US
dc.subject.keywordgraniteen_US
dc.subject.keywordice chemistryen_US
dc.subject.keywordpolar regionsen_US
dc.identifier.localId2020-0027-
dc.identifier.scopusid2-s2.0-85079846809-
dc.identifier.wosid000522452900100-
Appears in Collections  
2020-2020, Investigation of ice microstructure properties for developing low-temperature purification and environment/energy materials (20-20) / Kim, Kitae (PE20030)
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