Xiangxi handheld rock

Why does Xiangxi Stone Forest form a smooth boundary?

The Yunnan stone forest formed a smooth boundary because of its relatively uniform lithology, and the Xiangxi red stone forest is controlled by compositional differences to form concave and convex superposition morphologies. Comparison of the dissolution characteristics between Xiangxi UGGp and Shilin UGGp.

How big is the Red Stone Forest in Xiangxi?

The total territory of the red stone forest in Xiangxi is approximately 84 km 2 (Wu et al. 2020). It was discovered in 2002, developed into the National Geological Park in 2005 and was included in the Applied UNESCO Global Geopark (aUGGp) as a core geosite in 2017 (Fig. 1).

Where are red carbonate rocks found in Xiangxi?

The Ordovician red carbonate rocks were developed during the period when sea level gradually rose, sea water temperature decreased and biological radiation continued (Fig. 3) (Zhang et al. 2019). For the lithology in Xiangxi, these red carbonate rocks are mainly present in the Dawan Formation and Guniutan Formation.

How much difference between concave and convex Xiangxi stone columns?

That is, considering the background geological conditions in the Xiangxi area, the dissolution degree in the fast dissolution part (approximately 0.5~1 m below the soil surface) of the stone columns in the red stone forest might cause a difference of approximately 1.3978 mg between the concave and convex layers every year.