朽木,煤核与成煤作用

吕合矿第三纪煤中含大量煤核、朽木和矿化木。煤核多分布在顶板下附近,在煤核内矿化部位各异,朽木和矿化木则分居在距顶板较远的煤内和煤层上部。根据它们分布规律和各自特点,朽木是这里形成大量煤核和矿化木的先决条件。各种真菌对不同造煤植物或对同一植物的不同部位进行选择性破坏形成不同的朽木,朽化处再不能参与凝胶化成煤而在一定条件下被矿化成形态各异的煤核或矿化木。矿化成煤核是煤层内大部分朽木的最终归宿,少量被解体为矿物和类惰屑体参与成煤作用。

ROTTEN WOOD, COALBALL AND INCOALATION

There are a good many coalballs, rotten wood and mineralized wood in the Tertiary Coal of Luhe Coal Mine.Coalballs often appear near the roof of the coal.Mineralized sites in the coalballs differ from one another. Rotten wood and mineralized wood are separately within The coal far from the roof and in the upperpart. of the coalAccording to their distributions and characteristics rotten wood is the prerequisite to form a great quantity of coalballs and mineralized wood. The alternative destruction of various kinds of fungi acting upon diverse coal-forming plants or different components of the same plant results in producing all sorts of rotten wood. The rotten parts can not take part in gelatinization and can be mineralized into manifold forms of coalballs or mineralized wood under proper conditions. The mineralized coalball is the end-result for the most part of rotten wood. Only small part of the rotten wood is decomposed into minerals and quasi-inert detritus participating n coalforming.