Elemental compositions of smectite responding to changes in deposition conditions and sediment provenance during glacial and interglacial periods; Ulleung basin, East Sea

Title
Elemental compositions of smectite responding to changes in deposition conditions and sediment provenance during glacial and interglacial periods; Ulleung basin, East Sea
Author(s)
박한범; 강인성; 김창환; 박찬홍; 김진욱
KIOST Author(s)
Kim, Chang Hwan(김창환)Park, Chan Hong(박찬홍)
Alternative Author(s)
김창환; 박찬홍
Publication Year
2022-10-26
Abstract
Variation of clay mineral contents have been widely used to understand the changes in paleo-depositional condition and sediment provenance. Especially, smectite with wide range of elemental composition originated from multiple different sources could be used to distinguish the sediment provenances. In this study, sedimentary facies, clay mineral assemblages and C14 age dating in the core sediments (13 m long) from the Ulleung basin were adapted to characterize the depositional units and smectite elemental composition was utilized to distinguish the changes in sediment provenances. Moderate Al, Mg, Fe content smectite was dominantly observed in glacial period core depth sediment, while Al-rich smectite group and Fe-rich smectite group were identified in interglacial period core depth sediment. Observation of quite distinct smectite group between interglacial and glacial period indicated the different sources of sediment affected to Ulleung basin during interglacial and glacial period. These results provide a clue to understand the paleo-depositional condition changes including sea-level and current change in the East Sea and Dokdo island
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/43417
Bibliographic Citation
2022 추계지질과학연합학술대회, 2022
Publisher
대한지질학회
Type
Conference
Language
Korean
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