Fig. 4From: Development characteristics and controlling factor analysis of the Neogene Minghuazhen Formation shallow water delta in Huanghekou area, Bohai offshore basinLithofacies characteristics and vertical successions of shallow water delta in the HHKA. Wireline logs are spontaneous potential (SP) and gamma (GR). UDC- Underwater distributary channel; DB- Distal barBack to article page