摘要
辽吉古元古宙褶皱带是早前寒武纪时期的一条重要的褶皱造山带与成矿带。依据褶皱带在组成、结构、构造特点、成矿作用与变质作用和岩浆作用演化上的变化 ,识别出褶皱带的内部分带性。褶皱带由北部线性褶皱带和南部隆褶带构成 ,二者虽然具有诸多方面的差异 ,但却具有统一的区域构造演化并产生了统一的构造系统。文中系统讨论了褶皱带的结构、组成、构造特点与构造演化。重点讨论了褶皱带早期演化中形成的隆滑构造与岩浆核杂岩的特点 ,并对褶皱带研究与找矿工作中涉及到的一些关键问题进行了讨论。
The Liaoji Paleoproterozoic fold zone is an important fold-orogenic and metallogenic zone in the early Precambrian. Two sub-zones, northern linear fold zone and south dome-fold zone are recognized in the area. There exist obvious differences in the major geological and structural components, magmatic and metamorphic evolution between the two sub-zones. Their structural styles, however, possess identical characteristics and show similar tendency of evolution. The structural styles, characteristics and evolution of the fold belt are discussed with special emphases on the characteristics of uplifting and delamination structures and magmatic core complexes in the early evolution of the fold belt. Problems on further study and mineral exploration in the fold belt are discussed
出处
《前寒武纪研究进展》
2002年第3期214-220,共7页
Progress in Precambrian Research
基金
中国地质调查局"华北地台成矿规律和找矿方向综合研究项目"(编号 :2 0 0 110 2 0 0 0 38)
