書誌事項
- タイトル別名
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- Silt and Siltstone
- シルト ト シルトガン
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Size and shape properties of clastic grains of silt and siltstone are discussed using desert sands from Egypt and siltstones from Malawi; it is revealed that most of the silt grains (i.e. diameter of the grains finer then 4.0φ and coarser than 8.0φ in size) are invariably angular in shape. Once the silt grains were formed, they seem to retain their shape and even their surface features. Although the occurrence of siltstone is not so common, it frequently occurs in the geological formations within the Permo-Triassic Karroo system in the African continent. The glacial deposits named the Dwyka system has been reported from the Gondwana Land, particularly in South Africa. The occurrence of the siltstone may be related to the glaciofluvial deposits in this region. In the supplementary part of this report, we present the outline of the Database named IDARC (Image Database of African Rock Collection), and explain how to read it on the Home Page of the Nagoya University Museum open to the public.
収録刊行物
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- 名古屋大学博物館報告
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名古屋大学博物館報告 26 119-152, 2010-12-25
名古屋大学博物館
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詳細情報 詳細情報について
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- CRID
- 1390290699472761344
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- NII論文ID
- 120002958390
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- NII書誌ID
- AA11563168
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- HANDLE
- 2237/14685
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- NDL書誌ID
- 11053500
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- ISSN
- 13468286
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用可