Abundance of the chemical elements in the Sun and outer planets is similar to that in the universe. Due to solar heating, the elements of Earth and the inner rocky planets of the Solar System have undergone an additional depletion of volatile hydrogen, helium, neon, nitrogen, and carbon (which volatilizes as methane). The crust, mantle, and core of the Earth show evidence of chemical segregation plus some sequestration by density. Lighter silicates of aluminum are found in the crust, with more magnesium silicate in the mantle, while metallic iron and nickel compose the core. The abundance of elements in specialized environments, such as atmospheres, or
Return to the Centre of the Earth Leskanich. The story is narrated by Patrick Stewart. Recording was delayed after Wakeman was hospitalised with a life threatening case of double pneumonia and pleurisy, and needed time to recover. Upon release, the album reached number 34 on the UK Albums Chart. In 1974, Wakeman released his second solo album "Journey to the Centre of the Earth", a concept album based on the same-titled science fiction novel by Jules Verne. It tells the story of Professor Lidenbrook, his nephew Axel, and their guide Hans who follow a passage to the Earth's centre originally discovered by Arne Saknussemm, an Icelandic alchemist.