内蒙古中西部多岛海构造演化

ISLANDS-OCEAN STRUCTURAL EVOLUTION OF MID-WESTERN CONTINENT IN INNER MONGULIA

内蒙古中西部大陆由一个微大陆、三条弧后盆地和三条火山岛弧，即华北微大陆、白云鄂 傅弧后盆地、白乃庙火山岛弧、温都尔庙弧后盆地、苏尼特左－锡林浩特火山岛弧、贺根山弧后盆 地和二连浩特－锡林郭勒火山岛弧组成。经过了长期而复杂的微大陆和火山弧的裂解、弧后盆地 的消减衰亡及弧－陆和弧－弧碰拉等构造演化，才最终形成今天所见到的这种构造样式。

The continent in mid-westhern Inner Mongolia is composed of a microcontinent, three volcanic island arcs and three back-arc basins, which are North China microcontinent, Baiyun Obo back-arc basin, Bainaimiao volcanic island arc, Wendurmiao back-arc basin, Sunitezue-Xilinhaote volcanic island arc, Hegenshan back-arc basin and Erlianhaote-Xilinguole volcanic island arc respectively. At last they have being formed the tectonic framework, after breakup of the volcanic island arcs, subduction, decline and fall of the back-arc basins and arc-microcontinent and arc-arc collision had finished.