Coal Deposits in the World
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概要
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The coal-bearing formations in the world are concentrated on three periods;<BR>1) Late Carboniferous-Permian<BR>2) Late Triassic-Jurassic<BR>3) Late Cretaceous-Middle Miocene<BR>The Carboniferous coal-bearing formations are found mainly in Europe and in eastern regions of North America, but the Permian coal-bearing formations are concentrated in Africa and Australia. The Triassic coal-bearing formations are concentrated in almost entirely in Asia. The Cretaceous coal-bearing formations are concentrated in western part of North America and the Pacific coast region. The Cenozoic coal-bearing formations are ubiquitous, but they have not been developed enough exept in North America.
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