Beaverhill Lake 群 Swan Hill 组的碳酸盐岩建造一般来说起伏平缓,分布较大,被速度相对较高的 Waterways 组页岩覆盖,同时又嵌入该高速层内。在穿过礁体时,Waterways 组页岩尖灭,不覆盖这些礁体。与这些构造现象一致的是:在这些礁的下方,前礁地震同相轴没有明显地被拉伸,礁上方的后礁地震同相轴也没有被掩盖。实际上,这些礁的地震成像被上覆的 Beaverhill Lake 群顶部的和 Gilwood 组的大振幅反射所笼罩,不能从这些盆地沉积反射中区分出来。但是,可以在常规处 The carbonate rocks in the Swan Hill Formation of the Beaverhill Lake Group generally fluctuate gently and distribute widely and are covered by relatively high-speed waterways Shale and embedded in the high-velocity layer. When passing through the reef, the Shafts of the Waterways Group were pinned out and did not cover these reefs. Consistent with these tectonic phenomena, beneath these reefs, the seismic reefs of the foreback were not significantly stretched and the seismic reef’s seismic events above the reefs were also not obscured. In fact, the seismic images of these reefs were shrouded in large amplitude reflections from the top of the overlying Beaverhill Lake group and from the Gilwood Formation and could not be distinguished from sedimentary reflections from these basins. However, it can be done routinely