Gneiss and Marl Reserves

Reserves of Gneiss and Marl

The reserves of Gneiss and Marl are geographically distributed all over the world. Gneiss and Marl reserves play an important role in a country’s economic growth. Rocks are deposited according to the topography of the area. Some oldest rocks can be found in the Canadian Shield, Australia, Africa and in a few other old regions around the world. The ages of these felsic rocks are around 2.5 and 3.8 billion years. Learn about the countries with Gneiss and Marl reserves here.