Study on sequence models and controlling factors of Paleogene Dainan Formation in Gaoyou Sag, northern Jiangsu Basin
Online published: 2014-08-15
According to core, drilling, seismic data and laboratory analysis, this paper carried out a comprehensive study on sequence stratigraphy of Paleogene Dainan Formation in Gaoyou Sag. The sequences were divided into three third-order sequences and eight fourth-order sequences accorded to the identifying mark of sequence boundary, and the sequence strtigraphy framework was established. Two kinds of sequence models were established. One is a completed lacustrine sequence model, and it is composed of lowstand system tract, transgressive system tract and highstand system tract. Another is an uncompleted lacustrine sequence model, and it is composed of lowstand system tract and transgressive system tract. At last, the controlling factors to the sequence development were analyzed. It is considered that the tectonic subsidence is the main controlling factors for the third-order sequence structure, and that the lake level change caused by the climate and the rate of sediments supplying are the main controlling factors for the fourth-order sequence in this area.
JI Youliang， WANG Yong， LI Qingshan， HU Bin . Study on sequence models and controlling factors of Paleogene Dainan Formation in Gaoyou Sag, northern Jiangsu Basin[J]. Lithologic Reservoirs, 2014 , 26(4) : 9 -15 . DOI: 10.3969/j.issn.1673-8926.2014.04.002
/
| 〈 |
|
〉 |