The formation of crannies of the vermiculate reticulate clay results from the stratigraphical pressure and the seasonal fluctuating of the groundwater level . the formation of holes of the rhizomatic reticulate clay results from the decomposition of the botanic roots 蠕虫状网纹孔隙空间的产生是由于地层静压力和地下水位季节性变化造成的，而根状网纹的孔隙空间则是植物根系腐烂分解后提供的。
2.
The authors studied the characteristics of element geochemistry , mineral assemblage and microtexture of the white reticulate clay in the quaternary laterite of the dongting basin with some experimental analysis methods , such as chemical analysis , x - ray diffraction analysis , ir and sem analysis . the genesis of the vermiculate reticulate clay and the rhizomatic reticulate clay in the quaternary laterite of the dongting basin are discussed . the formation of crannies or holes in the soil and the transference of soil elements are absolutely necessary conditions to form the white reticulate clay in laterite 在野外考察的基础上，运用化学全量分析x射线衍射分析红外光谱分析和扫描电镜微形貌分析等实验方法和手段，对洞庭盆地第四系红土地层中网纹的元素地球化学矿物组合特征和微形貌特征进行了系统研究，对洞庭盆地红土地层中2种主要的网纹类型蠕虫状网纹和根状网纹的成因进行了探讨。
