断层上块
The secondary fissure, located on the upfaulted block of the major fissure, has the normal fault property with north dip and north downthrown, and merges into the major fissure with Y-shaped distribution at depth 300-500m in Quaternary system.
次缝位于主缝上盘,具有北倾北降的正断裂性质,并与主缝断裂呈丫字型构造,在深度300~500m处的第四系内与主缝汇合。
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