Study on the Shengli Ⅰ Channel Bar of Yellow River Delta

Key words: 
• channel bar /
• sedimentary facles /
• delta /
• the Yellow River

Abstract: Channel bars are of ten observed in the Yellow River Delta and the Sheng LiⅠChannel Bar, which islocated to the morth of the Sheng Li Bridge, is a typical one among them. It is 1 200 meters long and may get 120 meters wide at its broadest part. The spindle-shaped Sheng Li Ⅰ Channel Bar is observed lenticular from its longitudinal or lateral side and cutted by water courses into several parts. The central part is higher than it sends and sides. After a more detailed study, several conclusions, are described as follows: ① there are two quite different kinds of sedimentary units in the channel bar. One of them is that described before, and the other one may consists of sand of muddy gravel dunes nad small water ditches;② channel bar is not the smallest unit in sedimentary facices division. It may be divided into the ordinary channel bar, watercourse, water ditch and eolian deposit facies in the Yellow River Delta, and every fa-cies has its o wn characteristics; ③ climbing beddings are widely developed in the channel bar; ④ sediments in the channel bar are mainly fine-grained sand of silt.