东秦岭地壳的波浪状构造演化

EVOLUTION OF THE CRUSTAL WAVY STRUCTURES IN THE EAST QINLING MOUNTAINS

东秦岭构造带是个综合性活动带,其形成和发展都同华北与华南两大地块之间的天平式摆动相关联。实际上,来自SSW方向的特提斯构造波系和来自SEE方向的环太平洋构造波系控制着整个演化史。但一个波系在一段时期居于支配地位,其后便为另一波系所替代。这种交替反复进行了多次。

The east Qinling tectonic belt is a synthetically active zone. Its creation and development are related to the balance-like swing between N-and S-China major blocks. In reality, the whole evolution was controlled by the interweaving of two wave systems, of which one is the Tethys crustal-wave coming from SSW and the other Cireum-Pacific crustal-wave from SSE. One wave system, however, played a leading role in one period, and the dominant role was taken over by the other. The alternation was repeated many times.