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根据岩石块体的结构特征研究和测试分析，剖析了含煤地层中发育的一种锥形岩石——树根结构体的成因。它是地质历史中，树木伞状根系所维系的土体，在树木的自重荷载和主干根系生长的相互挤压作用下与外围土体的差异压实造成的；换言之，它又是一种在生物作用影响下形成的沉积结构体或沉积构造。与其它沉积构造相比，树根结构体具有更好的岩层示序意义。含煤地层内树根结构体的发育，标志着聚煤时期沼泽内复杂的沉积环境、地貌形态以及微地貌短期多变的现象
According to the study of structural features of rock blocks and their test analysis, the formation of a conical rock-tree root structure in coal-bearing strata is analyzed. It is the geological history, the tree umbrella root system is controlled by the soil, in the tree self-weight load and the growth of the trunk root growth under the mutual extrusion and the difference between the outer soil compaction caused; in other words, it is a kind of Depositional structures or sedimentary structures formed under the influence of biological effects. Compared with other sedimentary structures, tree root structure has a better significance of stratigraphic sequence. The development of the tree root structure in the coal-bearing strata marks the complex sedimentary environment, topography and micro-topography in the marsh during the coal accumulation period