Edimentary environmental analysis based on the electric conductivity and pH of stirred clayed drilling cores in water and diatom recovered from the old drowned valley plain in The Dagu Mountain, Liaodong Peninsula in China

By analyzing drilling cores in gullies which are located in the Lidi Villiage, the northern Dagu Mountain, the Liaodong Peninsula, the results show that the conductivity, diatom analysis results and pH of the clay turbidity water were in the main accordance with the conductivity curve and the salty water diatom curve of the clay turbidity water. By combining the result of diatoms with the conductivity and the pH value of clay, the plain-LD-core is divided into four zones: the Ⅰ zone is the drowned marine-layer in the Holocene transgression, the Ⅱ zone is the intertidal environment which is affected gradually by seawater, the Ⅲ zone is divided into two subzone, they are Ⅲ-1 zone (salt marsh wetlands) and Ⅲ-2 zone(fresh water lake ) respectively. the same to the Ⅳ zone, the Ⅳ-1 zone is a certain depth of the swamp wetland which is not affected by seawater. but the Ⅳ-2 zone is a swamp wetland which is affected by water. The results show that the good consistency between diatom analysis and clay muddy water can be as an important means for distinguishing land facies and sea facies, in addition, the conductivity curve of the clay turbidity water is in good negative correlation with pH, which shows that the conductivity curve of the clay turbidity water is in good accordance with diatom analysis results and they can be used as mutual verification.