Characteristics of telemagmatic metamorphism of the Ceshui Formation coal in Lianyuan coal basin |
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| Authors: | Bi Hua Peng Gelin |
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| Institution: | (1) Open Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang;(2) Changsha Institute of Geotectonics, Chinese Academy of Sciences, 410013 Changsha |
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| Abstract: | The Ceshui Formation coal is mostly anthracite and its metamorphism has been less documented. By analyzing systematically
the reflectance of vitrinite and the results of X-ray diffraction of the Ceshui Formation coal in the Lianyuan coal basin,
the spatial variation characteristics of coal ranks, coal metamorphic regions, the extension of coal metamorphic belts, coal
metamorphic gradients, coal chemical structure and the effect on the degree of metamorphism of heat-production and storage
conditions, buried depth of the Indosinian-Yenshanian granites at the margins of the Lianyuan coal basin are discussed. The
research results in conjunction of the features of regional hydrothermal alterations, endogenetic deposits with the Ceshui
Formation coal measures, and the development of secondary vesicles indicate that the telemagmatic metamorphism is the main
factor leading to the metamorphism of the Ceshui Formation coal in the region studied. |
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| Keywords: | Ceshui Formation coal telemagmatic metamorphism characteristic Lianyuan coal basin |
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