摘要
湘黔金矿带呈北东—南西向。北东起于洞庭湖,南西至天柱—榕江一带。带内基底为浅变质岩系,盖层为碳酸盐岩及碎屑岩。发育有区域性深大断裂.断隆区浅变质岩广布,断坳区盖层发育。不同级次的构造,分别控制含矿带、矿化密集区、矿床及矿体的产出。北东—南西向深大断裂带控制着金矿带的产出。俯冲带和深大断裂带相交区,控制矿化密集区的产出.次级北东—南西向断裂带和同方向次级褶皱与北西向断裂交会区控制着矿床、矿点的产出。矿体则受层间剥离构造、小背斜及挠曲、节理群发育的控制。
The Hunan and Guizhou gold ore belt is in the NE -SW direction. It starts from the Dongtin Lake in the north -west and disappears in the areas of Tianzhu and Rongjiang in the south-west.
The base layer of the belt belongs to a slightly metamorphosed rock system, covered with carbonate and debris rocks. The fault structure is developed, with deep and large regional fault belts . The slightly metamorphosed rocks are widely distributed in the fault upwarping areas,with fault covering layers developed.
The structures of different grades and orders respectively control the occurrances of ore belts, ore regions,deposits and ore bodies. The deep and large NE-SW fault belt controls the occurrance of gold ore belt. The intersecting areas of subsiding belts and deep and large fault belts control the occurrance of ore regions. The secondary NE-SW fault belts and the secondary folds in the same direction are intersected with the NW faults , controlling the occurrances of deposits and ore points. The ore bodies are controlled by slag structures,small anticline folds and joint groups.
出处
《贵州地质》
1990年第1期65-70,共6页
Guizhou Geology
基金
国家自然科学基金
