2026-10-12T09:41:14Z https://www.scidb.cn/oai

10.11922/sciencedb.j00001.00043 2020-08-04T16:03:32Z

2020-08-04 A micrograph dataset of late Ordovician carbonate rocks in Northwest Tarim and South China doi:10.11922/sciencedb.j00001.00043 en The late Ordovician is a crucial period in the long geological history, during which carbonate rocks deposited recorded the changes of the earth's epigenetic environment, laying the foundation for the study of the extinction events at the end of Ordovician. In this study, we collect and identify the late Ordovician carbonate thin section images by biological polarizing microscope. The study area includes Kelpin of northwest Tarim and Yichang area of South China. The stratigraphic age involved the Sandbian-Katian, and the identification content was fossil fragments， with the sampling interval of 0.5–2 m and 0.2–0.3 m. The datasets can be compared with the data of late Ordovician studies in other regions, in order to provide more details for subsequent studies on the paleoceanographic and paleoenvironmental of the Ordovician. Furthermore, to establish the spatial variation model of carbonate rocks deposited in the late Ordovician. Upper Ordovician; Northwest Tarim; middle Yangtze; carbonate; Bioclast 常晓琳 Chang Xiaolin 刘欣春 范泰源 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.11922/csdata.2020.0059.zh Science Data Bank