转折端

狼山北西侧，则由于强烈的褶皱叠加作用，促使矿层在褶皱转折端等有利部位加厚，形成厚大工业矿体。

In the northwest side of Langshan , superposed folding makes ore beds thickened at hinge zone of folds in which large industrial ore bodys are formed .

研究表明：矿体主要赋存于主褶皱转折端大理岩与绿片岩间的构造虚脱空间内，明显地受主褶皱空间展布、形态及完整性的影响和控制。

It is revealed that the orebodies are mainly formed within the saddle like spaces between marbles and green schists in the hinge zone of the fold , and that the orebodies are clearly controlled and / or affected by the spatial distribution patterns and its completeness of the fold .

秦皇岛背形以秦皇岛&凌源断裂为轴面，由复向斜的轴面褶皱而成，背形转折端在秦皇岛，呈相对上翘。

Qinhuangdao antiform is formed by folding of the axial plane of the synclinorium with the hinge located at Qinhuangdao .

地球化学急变带，特别是急变带的转折端对超大型矿床和成矿密集区的分布有密切控制作用；

The distribution of super large deposits and mineralization intensive domains are tightly controlled by the geochemical steep zones , especially at their turning points ;