yixian formation meaning in English
热河组
义县组
Examples
- Discovery of fossil dinosaurs in the basal and lower beds of yixian formation , western liaoning province , china
义县组底部层位发现恐龙化石 - Grain size analysis of sedimentary environment from jianshangou bed of yixian formation in western liaoning , china
辽西义县组尖山沟层沉积环境粒度分析 - Geological characteristics and its setting for volcanic rocks of early cretaceous yixian formation in western liaoning province , eastern china
辽西早白垩世义县组火山岩的地质特征及其构造背景 - The structural analysis of sedimentary sections of yixian formation in the two basins not only reveals the features of sedimentary facies , but also provides evidences for the correlation of the sedimentary facies
对两个盆地义县组典型剖面的沉积剖面结构分析，不仅揭示了两个盆地的沉积相特征，而且为两个盆地沉积相的对比提供依据。 - In part four , based on abundant insect fossils collected from the late jurassic yixian formation 4 insect communities were recognized . the richness , diversity , dominance within these 4 communities were analyzed . insect community and their environmental setting are reconstructed . a hypothetical structure of the late jurassic yixian formation lake ecosystem is given
第四部分：根据所采集的丰富昆虫化石，在中生代晚期陆相地层中识别出4个古昆虫群落，并对群落的物种丰富度、分异度和优势度等生物指标进行了分析。