How was Tian Huangshi formed?

In the geological Mesozoic (about 230 million years ago to 67 million years ago), a great geological change took place in eastern Fujian today, and a large number of magma broke through the surface and formed a towering flame. With the volcanic eruption, a large number of acidic gases and liquids are brought, which alternately decompose feldspar minerals in surrounding rock layers, differentiate into active elements such as potassium, calcium, magnesium and iron, and retain relatively stable aluminum and iron.

Tian Huangshi was at the end of Tertiary period millions of years ago. Due to the erosion of wind and rain, some minerals in the "high mountain" vein rich in Jiashi, Shoushan were separated from the deposit, scattered on the basic surface beside the stream, and then gradually covered by sand. These minerals have been buried in sandy soil for a long time, and the iron trioxide contained on the surface is gradually acidified by the influence of surrounding soil, water and humidity, which changes the true colors of the stone and forms a unique Tian Huangshi.