congregated district meaning in English

人口稠密地区

The author suggests that the three lithosphere - scale faults , lancangjiang fault , jinshanjiang - ailaoshan fault and axis fault in the middle of the basin , are the main geological structures that control the formation of basin , magmatism and metallogenic congregate district . the anticline structure with an axis of triassic strata and the related fault system within the basin , and gonglang arch - shaped folding structure in the south of the basin are the geological structure controlling the formation of ore fields . junctions of two or more faults with different orientation , interlayer cataclastic structural zone and oxidation - reduction ( redox ) boundary were the favorable position for the formation of ore bodies
认为澜沧江断裂、金沙江-哀牢山断裂及盆地中轴断裂这三条岩石圈断裂是主要的控盆-控岩(岩浆岩)构造及矿集区尺度的控矿构造；盆地中以三叠系为轴的背斜构造及相关的断裂系统、盆地西南缘公郎弧形构造等是矿田尺度的控矿构造；多组断裂的交叉、层间破碎带及地层柱中的氧化还原界面是形成矿体的有利部位。