Fig. 13From: Development characteristics and controlling factor analysis of the Neogene Minghuazhen Formation shallow water delta in Huanghekou area, Bohai offshore basinSedimentation controls the formation of relative palaeogeomorphology and local sub-sags and channel of later periods (Taking PSS1 of BZ26 area as an example). a is the seismic profile (Seeing location for Fig. 13d); b is the seismic lithologic interpretation. Interpretation of lithology under the boundary indicates that areas where sandbodies develop tend to form local palaeo-highs due to their strong anti-erosion ability and are uneasy to be compacted; c shows the channels and small sub-sags formed by relative palaeogeomorphological height difference. Relatively low palaeogeomorphology forms long and narrow shape which represent channels of late periods; d is a 3-D display of PSS1 palaeogeomorphology in BZ26 areaBack to article page