Solubility of water in the α, β and γ phases of (Mg,Fe)2SiO4

地球上水分佈

地球上水分佈（Water distibution on Earth），實際情況是存在大氣層和地殼中的大部分均來自鹹的海水，而淡水僅佔總量中近2.5%. 地球上鹹水的平均鹽度為35‰（千分之35，大致相當於1公斤（千克）海水中含有35克鹽），但各地海洋會因從周圍陸地獲得逕流的數量及降雨量不一而鹽度會略有不同.

Water distribution on Earth

Most water in Earth's atmosphere and crust comes from the World Ocean's saline seawater, while fresh water accounts for nearly 1% of the total.

Ringwoodita

Ringwoodite

Ringwoodite is a high-pressure phase of Mg2SiO4 formed at high temperatures and pressures of the Earth's mantle between depth.