- 责任者：He Zhenjian (Geological Scientific Research Institute ; Shengli Oilfield Company of SINOPEC ; Dongying 257015 ; China) ; Lui Shuhui
- 刊名：Geological Review
- 出版年：2012
- 卷期：58(5)
- 关键词：红层 ; red beds ; 古气候 ; paleoclimate ; 东营凹陷 ; Dongying Sag
- 页码：p.839-845
- 图表：3 illus., 1 table, 36 refs.
- 分类号：1400
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
According to the characteristics of the climate change, the red beds from the Es4-Lower—Ek1（the Lower Sub - Member of the 4th Member, Shahejie Formation, to the 1 st Member, Kongdian Formation, Eocene ） in Dongying Depression are availably divided, which have not been divided for a long time because of lacking referential fossils. The relative climate change is recovered based on logging data in combination with the relative content of Ephedripites. At first, according to the relative content of Ephedripites, the depth section of the inflection point of the climate change is defined. Then, based on continuous clay mineral contents which are determined by natural gamma ray spectrometry log data or conventional log data, the concrete depth of the inflection point of the climate is thereby defined, which is recognized as the boundary in the red beds.