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吴川—四会断裂带存在着中—高温超塑性变形岩石和半韧性半限性糜使岩两大系列构造岩，具有长期复杂的变形历史。中高温超塑性变形岩石由层状花岗质构造片麻岩、面状花岗质构造片麻岩和带状花岗质构造片麻岩构成，它们分别形成干晋宁期造山作用、早加里东期和印支期的基底折离作用。而半韧性半脆性构造岩由糜棱岩系列岩石构成，尤以出现玻状岩为特征，为燕山早期逆冲断层产物。
There are two series of tectonic rocks in the Meso - high temperature superplastic deformation rock and semi - ductile semi - restricted Mi Mi rock in the Sihui fault zone, which have long - term complicated deformation history. Meso-high temperature superplastic deformation of the rock by the layered granitic gneiss, granitic gneiss and banded granitic gneiss, which formed respectively dry Jinning period orogenic, early Gary In the East and Indosinian basement discounts. Semi-ductile and semi-brittle tectonic rocks are composed of mylonite series of rocks, especially in the presence of glassy rocks and early thrust faults in Yanshan.