地理科学 ›› 1987, Vol. 7 ›› Issue (2): 139-146,197.doi: 10.13249/j.cnki.sgs.1987.02.139

• 论文 • 上一篇    下一篇

黄土沟槽网络与新构造应力场

王景明   

  1. 西安地质学院
  • 出版日期:1987-03-20 发布日期:1987-03-20

LOESSIC GULLY NETWORK AND NEOTECTONIC STRESS FIELDS

Wang Jingming   

  1. Xian Geological College
  • Online:1987-03-20 Published:1987-03-20

摘要: 对汾渭盆地3519条黄土沟糟的调查研究发现,非随机性的黄土沟槽具有方向性、独立性、区域性和系统性特征。这些沟槽交叉成络,多组沟槽的走向自西而东呈顺时针偏转。它们与黄土各组构造节理的区域性方向一致,而且两者的发育程度也相适应,都受控于构造,同是新构造应力场作用的产物。

Abstract: The loessic gullies not connected directly with river systems are widely spread in the Q2-4 loess of Fenwei Basin. The loessic gullies are directional, independent, regional and intersected with the network. The strike of many groups of gullies presents a clockwise deflection from west to east. Field investigation indicates that the loessic gullies were formed by ioessic tectonic joints constantly suffered from ground water corrosion. Therefore, the sprea ding directions and developing degrees of both tectonic joints and gullies are correspondent. The neotectonic stress field of Weihe Basin determined by loessic conjugate shear plane corresponded with gully network coincides essentially with the neotectonic stress field determined by river systems and earthquake. The study of loessic gully network is of great significance for searching out groundwater, researching soil erosion, recovering neotectonic stress field and predicting earthquake.