WANG Hong bao, ZHONG Jian hua, WANG Shu bao. Characteristics,Genesis and Significance of the Air Heave Structure in the Delta Plain of Yellow River[J]. Acta Sedimentologica Sinica, 2003, 21(4): 571-578.
| Citation:
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WANG Hong bao, ZHONG Jian hua, WANG Shu bao. Characteristics,Genesis and Significance of the Air Heave Structure in the Delta Plain of Yellow River[J]. Acta Sedimentologica Sinica, 2003, 21(4): 571-578.
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Characteristics,Genesis and Significance of the Air Heave Structure in the Delta Plain of Yellow River
- 1.
Department of Geoscience,Zhejiang University,Hangzhou 310027;
- 2.
Dongxin Oil Recovery Plant, Dongying Shandong 257094;
- 3.
Earth Resource and In formation College, Petroleum University of China, Dongying Shandong 257061
- Received Date: 2002-09-09
- Rev Recd Date:
2003-01-06
- Publish Date:
2003-12-10
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Abstract
The air heave structure is a sedimentary phenomenon that is seldom observed, however, it is so well developed in the modern Yellow River delta that we may even find it on the riverbeds of the plains higher than the level of the water surface as well as many other minor sedimentary facies.They are very attractive for their unique looks and their finished configurations;w hat's more, they can show up in a large scale and present us a splendid sight in some reaches of the river. Most of the air heave structures developed in the Yellow River often show us as a circular dome in the shape,the rest as a plate;the diameter of them vary from scores of centimeters to one or two meters;as to those of plateshaped, the diameter of them can amount to scores of meters in the length as well as the width, and from several centimeters to twenties or thirties centimeters in the height. As to the configuration of the air heave structure, it was made up of three parts:the cover, the room and the base.The depth of its cover is f rom >10 centimeters to >20 centimeters.Some of the covers are smooth and some are sprinkled with arch cracks, imploded cracks, concentric quoits, eroded pits and slots, ripple marks, whiffing mud-sand volcanoes, slip and crimple squamas, air-discharging holes(pits, slot)and other accompanying or secondary structures such as some rill marks, and so on. The genesis of the air heave structures developed in the Yellow River is rather complex.By study ing the cause, we must relate it w ith the unique hy drology and the hydromechanical conditions fo rmed by the cut-off of the Yellow River and the co rrespondingly typical st ructure of the riverbed and the g ranule(clay and f ine siltite)characteristics of the sediments in the Yellow River.
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