The bottom of rocks at syncline axis is tensioned and inverse cuneiform-like rock masses are formed. By contraries, cuneiform-like rock masses are formed at anticline axis under compression.
向斜轴部的岩层底面受张拉破碎为‘倒楔形’岩块，背斜轴部岩层底面受压破碎为‘正楔形’岩块。
The axis and two limbs of anticline are favorable for oilsanddistribution where have well-developed faults.
在构造的轴部及靠近轴部的两翼，断裂发育，是油砂分布的有利部位。
The axis and two limbs of anticline are favorable for oilsanddistribution where have well-developed faults.
在构造的轴部及靠近轴部的两翼，断裂发育，是油砂分布的有利部位。
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