Photo: Screenshot from CCTV

The International Union of Geological Sciences (IUGS) has announced the inclusion of three Chinese geological heritage sites in its second batch of sites to be inscribed on the global 100 Geological Heritage Sites list. The recognized sites are the Permian vegetation of the Wuda Fossil Site, the Dashanpu Middle Jurassic Dinosaur Fossils Site, and the Guilin Karst landscape.

The announcement was made during the 37th International Geological Congress in Busan, South Korea. A press conference was held in China on Tuesday to announce the specifics of the inclusion.

"The three geological heritage sites from China that were selected this time are outstanding representatives of the country's geological heritage. Their scientific value and the quality of the research produced on them have been unanimously recognized by the international academic community, and their current conservation status has received high praise from the global community," said Zhang Jianping, vice chair of the IUGS International Commission on Geoheritage and a professor at China University of Geosciences (Beijing), at the press conference.

Photo: Screenshot from CCTV

The Permian vegetation of the Wuda Fossil Site in North China's Inner Mongolia Autonomous Region is often referred to as the "Pompeii of Plants." The coal-forming forest was preserved between two coal seams in the Wuda Coalfield in Inner Mongolia by volcanic ash that was deposited during its growth. High-precision zircon dating of the volcanic ash indicates that the age of this coal-forming forest is about 298 million years, making it the world's oldest Permian coal-forming forest. Plant remains are preserved in unusually complete forms, with some structural mineralization retaining internal features of the plants.

Research has uncovered over 50 species of plant fossils at this site, highlighting the high diversity and evolutionary level of the coal-forming forest during that period. The site was first discovered in 1998 but was not identified as volcanic in origin until 2003. The international scientific community continues to conduct in-depth research on this geological heritage site.