QUANTITATIVE ESTIMATION AND DISTRIBUTION OF DETRITAL CLAY MINERALS IN THE SURFACE SEDIMENTS OF SOUTH YATSUSHIRO KAI, JAPAN
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- MOJARES Edwin
- Institute of Earth Sciences, Faculty of Science, Kagoshima University
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- TOMITA Katsutoshi
- Institute of Earth Sciences, Faculty of Science, Kagoshima University
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- RIFARDI
- Institute of Earth Sciences, Faculty of Science, Kagoshima University
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- OKI Kimihiko
- Institute of Earth Sciences, Faculty of Science, Kagoshima University
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- KAWANO Motoharu
- Department of Environmental Sciences and Technology, Faculty of Agriculture, Kagoshima University
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Quantitative estimation of clay minerals in the clay fractions of the surface sediment samples from South Yatsushiro Kai is obtained from the X-ray diffraction patterns of the clay mineral suite that contains illite, chlorite, kaolinite, smectite and 10Å halloysite. Among the clay species, illite and chlorite are exceptionally abundant and they comprise more than 60% of the total clay minerals present in most sediments. Relative amounts of other clay minerals varies markedly with locality particularly kaolinite and 10Å halloysite and they tend to concentrate only near the point source except smectite which has a more unique behavior of transport and settling characteristics than other minerals. The relatively high supply of land-derived materials from various rock lithology surrounding South Yatsushiro Kai is the dominant contributing factor in outlining the trend of clay mineral distribution. Most, if not all, clay minerals are believed to be current-transported which shows that bottom water flow and shallow water currents are significant agents responsible for the distribution of various clay minerals.
収録刊行物
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- Clay science
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Clay science 10 (1), 95-112, 1996-12
日本粘土学会
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詳細情報 詳細情報について
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- CRID
- 1570291227401093120
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- NII論文ID
- 110003709352
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- NII書誌ID
- AA00607148
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- ISSN
- 00098574
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- 本文言語コード
- en
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- データソース種別
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- CiNii Articles