中文摘要：

我们通过地核心观察，薄节鉴定，扫描电子显微镜学，和 X 光检查衍射分析在 Jiangling 消沉学习了一个古新始新世的盐湖的沉积特征。根据沉积特征，我们总结了 petrological 和盐湖的矿物学的特征并且建议等级 IV 的 9 种类型腌节奏。免职显示出一脱盐到腌 halite-argillaceous-mudstone-mud dolostonemud anhydrock-glauberite-halite 的顺序。在等级 IV 节奏，水咸度和气候变化之中的关系被分析。基于在硼内容和 mudstone 颜色之间并且由联合矿物学和沉积环境特征的关系的分析，我们建议在 Jiangling 消沉的早、迟了的古新的 Shashi 形成是有一个高盐内容的 paleolacustrine depositional 环境，它是浅水盐湖 depositional 模型的一个代表。中间的古新的 Shashi 形成并且早始新世 Xingouzui 形成与在深 paleolake 的低盐内容是盐和略有盐味的沉积环境，它代表一个深盐湖 depositional 模型。

英文摘要：

We studied the sedimentary characteristics of a Paleocene-Eocene salt lake in the Jiangling Depression through field core observation, thin section identification, scanning electron microscopy, and X-ray diffraction analysis. On the basis of sedimentary characteristics we have summarized the petrological and mineralogical characteristics of the salt lake and proposed 9 types of grade IV salt rhythms. The deposition shows a desalting to salting order of halite-argillaceous-mudstone-mud dolostone- mud anhydrock-glauberite-halite. The relationship among grade IV rhythms, water salinity and climate fluctuations was analyzed. Based on the analysis of the relationship between boron content and mudstone color and by combining the mineralogy and sedimentary environment characteristics, we propose that the early and late Paleocene Shashi Formation in the Jiangling Depression was a paleolacustrine depositional environment with a high salt content, which is a representation of the shallow water salt lake depositional model. The middle Paleocene Shashi Formation and the early Eocene Xingouzui Formation were salt and brackish sedimentary environments with low salt content in a deep paleolake, which represents a deep salt lake depositional model.