• 责任者：Zhang Caili (Research Institute of Exploration and Development ; Changqing Oilfield Company ; PetroChina ; Xi’an 710021 ; China) ; Gao Along
• 刊名：Natural Gas Geoscience
• 出版年：2011
• 卷期：22(4)
• 关键词：碎屑岩储集层 ; clastic reservoirs ; 古气候 ; paleoclimate ; 古水流 ; paleocurrents ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.582-587
• 图表：4 illus., 2 tables, 19 refs.
• 分类号：1003
• issnNo：ISSN1672-1926
• isbnNo：CN62-1177/TE

Based on Sr concentration, the ratios of Sr/Br and Th/U, and fossil, the authors discuss the water condition and paleoclimate for the deposition of Chang7 oil layer in the Ordos Basin. The results show that the ratio of Sr/Br and Th/U is from 0.19 to 0.65,  and 0.36 to 5.03,  respectively,  indicating the water during the Chang7 Period was continental freshwater. The V/Ni ratio of 1.75~5.53 is fallen into the score of the reducing environment. The element assemblage, biogliph fossil, and Co quantitative match indicate that the water depth at the Chang7 Period was half-deep to deep lake, with the maximum depth of 50~120 m.The paleoclimate was confirmed as warm and humid climate by sporopollen assemblage.