地理学报 ›› 1983, Vol. 50 ›› Issue (3): 218-228.doi: 10.11821/xb198303002

• 论文 • 上一篇    下一篇

中国北部和东北部构造地貌发育和第四纪构造应力状态的关系

杨景春   

  1. 北京大学地理系
  • 出版日期:1983-07-15 发布日期:1983-07-15

RELATIONSHIP BETWEEN MORPHOTECTONIC EVOLUTIONAND QUATERNARY TECTONIC STRESS STATE INNORTH AND NORTHEASTERN CHINA

Yang Jing-chun   

  1. Department of Geography, Peking University
  • Online:1983-07-15 Published:1983-07-15

摘要: 根据大地测量、震源机制解、地震构造裂缝和第四纪活动断层等资料,对中国北部和东北部的第四纪构造应力状态进行了分析,认为中国北部和东北部第四纪期间处于北东东一南西西压应力状态。

关键词: 中国北部, 构造地貌, 第四纪活动断层, 东北部, 构造应力, 北东东, 断陷盆地, 北北东向, 北西向, 太原盆地

Abstract: Judging from geodesic, earthquake focal mechanism, earthquakeinduced fissures and quaternary active faults data, we are inclined to think that during the Quaternary period, North and Northeast China were subjected to a NEE-SWW trending compression. The morphotectonic evolution of these regions during this period was closely related to this te-ctonic stress state.1. NE (or NNE) and NW (or NWW) trending conjugate faults were formed or re-activated under the fore-mentioned compressional tectonic stresses. Rivers which crossing the NE (or NNE) trending active faults would be deflected right laterally, while those cro-ssing the NW (or NWW) trending active faults would be deflected left-laterally.2. A series of NE trending late Cenozoic down-faulted basins were formed under the NW-SE tensile stresses.3. The uplifted areas between the down-faulted basins were either simple tilted fault blocks or up-warped areas under NE-SW compressions or just a transverse highland which represented the remnant part under smaller rates of tensional stretching between two adjo-ining basins.4. Many rivers changed their courses or were captured by other rivers as the uplifted or up-warped areas were formed between down-faulted basins.5. Near one end of a transcurrent fault, an uplifted area was often formed on one side of the fault, whereas a depressed area was formed on the other side. Near the other end of that fault the reverse was the case. This was because the different sides of that fault moved in reverse directions.Basing upon the fore-going considerations, the following models of morphotectonic ev-olution related to faulting in North and Northeast China may as follows:1. Down-faulted basins with intervening tilted fault block highlands.2. Down-faulted basins with intervening up-warped highlands.3. Down-faulted basins with remnant highlands in between.4. An alternation of up-warp and down-warp on either side near the two terminus of that transcurrent fault.