湘中保和堂煤的煤岩学研究

从煤岩学的角度详细地研究了保和堂煤,结果表明,保和堂煤具有独特的煤岩特征,主要表现在下列几个方面:多过渡组分及腐泥基质;渗出沥青体尤为丰富;含有一种具一定形态和结构的腐泥物质,并从煤岩特点出发探讨了保和堂煤的形成环境,认为其形成于具有一定深度覆水的泥炭沼泽,并从腐泥基质及黄铁矿含量探讨了泥炭形成过程中沼泽覆水深度的变化,并籍此探讨了Ⅰ、Ⅱ煤的稳定性,此外,还从过渡组分含量较多及组分形态和排列等特点推测,Ⅰ、Ⅱ煤形成时有相当一部分泥炭来自于经常干涸的岸后泥炭沼泽,潮汐和洪水是搬运营力。图2,表1,参5。

A PETROLOGICAL APPROACH TO THE STUDY OF BAOHETAN COAL FROM MIDDLE HUNAN

The Baohetan coal has been studied in detail by means of coal petrology. The results show that the coal has some valuable features. Its macerals are very much complicated. It contains more sapropel groundmass (2-25%) and exudatinite as wella as transitional macerals. There exists a special kind of sapropel groundmass with some forms and structures in the coal. Meanwhile, a special kind of fissures have been found, which must have been found by contraction of vitrinite because of exhaustion of a great deal of exudatinite and gases (such as CH, and CO_2). Most of maceral are ranged in gnat disordes. Otherxise. The coal-formin environment of the coal and its stability have been investigated by means of maceral fixed-qcantity analysis. 2figs., 1tab., 5refs.