CLAY MINERALS OF THE FIG TREE SHALE IN THE EARLY ARCHEAN
スポンサーリンク
概要
- 論文の詳細を見る
Fig Tree shale, one of the early Archean sediments occurred in the Swaziland System in South Africa, was examined for clay minerals. These minerals found in the shale are chlorite and illite with chlorite predominance. The chlorite is a typical Mg-, Fe-chlorite and is likely the IIb polytype. The illite could not be specified as to its polytype. An examination by an analytical electron microscope of individual particles reveals that the chlorite is fairly uniform in chemical composition, whereas the illite may vary to phengite. The chlorite and illite are probably formed during the burial diagenesis, considering the shale's age 3 billion years old. These two clay minerals are perhaps the oldest terrestrial clay minerals that are identified and characterized chemically.
- 日本粘土学会の論文
著者
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Shimoyama Akira
Department of Chemistry, University of Tsukuba
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HAYASHI HISATO
Research Institute of Underground Resources, Mining College, Akita University
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KOHYAMA NORIHIKO
National Institute of Industrial Health
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Shimoyama Akira
Department Of Chemistry University Of Tsukuba
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Ponnamperuma Cyril
Department Of Chemistry University Of Maryland College Park
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Hayashi Hisato
Research Institute Of Natural Resources Mining College Akita University
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Hayashi Hisato
Research Institute Of Underground Resources Akita University
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