Along the south and north flanks of the Wudang fault apparent changes are observed in the distribution and depositional characters of the Jiujialu, Xiangbai and Jiusi formations (Lower Carboniferous).
在贵阳乌当断层南北两侧，下石炭统九架炉组、祥摆组和旧司组的分布和沉积特征存在明显的变化。
The abundant natural gas accumulation are concentrated in the subtle traps (relatively lower relief traps in East Sichuan)developed at the two flanks of the main structural belt.
天然气主要富集于主体构造两侧的低潜圈闭（经地震发现的闭合高度相对较小的潜伏圈闭），已发现双家坝和胡家坝两个气藏。
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