In the lower part of the section bioturbation is a common feature . 剖面的下部常见生物扰动现象。
2.
X-radiography has sometimes been used with success to detect bedding structures and bioturbation in apparently uniform sandstone . X射线照片有时已成功地用来发现外表均一的砂岩中的层次构造和生物扰动。
3.
X - radiography has sometimes been used with success to detect bedding structures and bioturbation in apparently uniform sandstone X射线照片有时已成功地用来发现外表均一的砂岩中的层次构造和生物扰动。
