Abstract:

Minerals in the Earth’s mantle are nominally anhydrous. Although the water content in their structural defects is low with ppm level (H2O, wt.), it can greatly affect the physical and chemical properties of the mantle minerals and thus the rock systems. Water in the mantle is, therefore, tightly connected with many important geological events and processes. Exploring the relationship between mantle water and geological events and processes is expected to be a right point to develop basic theories in geosciences.

Key words: water, Earth&rsquo, s mantle, important geological event, important geological process