calcareous concretion
- 钙质结核；石灰结核
calcareous concretion-
Form and genetic dynamics characteristics of calcareous concretion in the Loess of northwestern Hebel province and its stratigraphy significance
冀西北黄土钙质结核形态及其成因动力学特征与地层环境意义
-
The long axes of the ellipsoidal shaped calcareous concretion reflected the direction of movement of mineralizing groundwaters .
椭圆形的钙质结核的长轴方向反映了地下矿化水的流动方向。