Multibeam Bathymetry and Distribution of Clay Minerals on Surface Sediments of a Small Bay in Terra Nova Bay, Antarctica
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Title
- Multibeam Bathymetry and Distribution of Clay Minerals on Surface Sediments of a Small Bay in Terra Nova Bay, Antarctica
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Author(s)
- Jung, Jaewoo; Ko, Youngtak; Lee, Joohan; Yang, Kiho; Park, Young Kyu; Kim, Sunghan; Moon, Heungsoo; Kim, Hyoung Jun; Yoo, Kyu-Cheul
- KIOST Author(s)
- Jung, Jaewoo(정재우); Ko, Young Tak(고영탁)
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Alternative Author(s)
- 정재우; 고영탁; 이주한
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Publication Year
- 2021-01
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Abstract
- The second Antarctic station of South Korea was constructed at Terra Nova Bay, East Antarctica, but local seafloor morphology and clay mineralogical characteristics are still not fully understood. Its small bay is connected to a modern Campbell Glacier, cliffs, and raised beaches along the coastline. Fourteen sampling sites to collect surface sediments were chosen in the small bay for grain size and clay mineral analyses to study the sediment source and sediment-transport process with multibeam bathymetry and sub-bottom profiles. Under the dominant erosional features (streamlined feature and meltwater channel), icebergs are the major geological agent for transport and deposition of coarse-sized sediments along the edge of glaciers in summer, and thus the study area can reveal the trajectory of transport by icebergs. Glacier meltwater is an important agent to deposit the clay-sized detritus and it results from the dominance of the illite content occurring along the edge of Campbell Glacier Tongue. The high smectite content compared to Antarctic sediments may be a result of the source of the surrounding volcanic rocks around within the Melbourne Volcanic Province.
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ISSN
- 2075-163X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/39526
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DOI
- 10.3390/min11010072
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Bibliographic Citation
- MINERALS, v.11, no.1, pp.1 - 12, 2021
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Publisher
- MDPI
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Keywords
- Antarctica; Ross Sea; Terra Nova Bay; multibeam bathymetry; surface sediments; clay mineralogy
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Type
- Article
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Language
- English
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Document Type
- Article
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