The compositionalmaturity of sandstone is highter (Q>90%), but texture maturity is middle (matrix 0 10%).
砂岩成分成熟度高（石英＞90％），结构成熟度中等（杂质为0-10％）。
2
The factors which influence the microfractures are the structural position, compositionalmaturity, grain size, the quantity of cements as well as specific compaction.
影响构造微裂缝发育的因素是：所处的构造应力部位，岩石成分成熟度、粒度、压实程度和早期填隙物含量。
3
The sequence shows the directionally compositional evolution of granitoids in a collisional orogen, which illustrates the vertical and lateral crust growth and the enhancement of crustal maturity.