论文部分内容阅读
在我国云南、贵州、广西等地不同时代的碳酸盐岩地层中广泛发育各种色斑构造,泥盆纪、石炭纪、二迭纪至早三迭世的碳酸盐岩石中都可见到大量的色斑构造,尤以早二迭世地层中较多。 本文以广西田林县浪平公社玉家陀村下二迭统剖面为例(该剖面总厚587.60公尺,有色斑层段占2/5以上),根据色斑形态、镜下特征以及所处的古地理环境,认为不同类型的色斑是兰绿藻在不同环境下滋生而保存的遗迹,不同形态色斑的有序次排列,具有明确的指相意义。
In the carbonate rock formations of different ages in Yunnan, Guizhou and Guangxi of our country, various stain structures are widely developed. The carbonate rocks from the Devonian, Carboniferous, Permian to Early Triassic are all visible A large number of stains, especially in the Early Second Diego stratigraphic more. In this paper, an example is taken from the Lower Permian Section of Yujia Tuo Village, Langping Commune, Tianlin County, Guangxi Province. The total thickness of the section is 587.60 meters, and the colored layers account for more than 2/5. According to the speckle features, The ancient geographical environment, that different types of stains are blue algae breeding in different environments and preserved relics, the order of different forms of color spots arranged, with a clear meaning refers to the meaning.