Structure of the Earth obducted onto the continental crust and preserved as ophiolite sequences. Many rocks now making up Earth's crust formed less than 100 million (1) years ago; however, the oldest known mineral grains are about 4.4 billion (4.4) years old, indicating that Earth has had a solid crust for at least 4.4 billion years. Earth's mantle extends to a depth of 2,890 km, making it the thickest layer of Earth. The mantle is divided into upper and lower mantle. The upper and lower mantle are separated by the transition zone. The lowest part of the mantle next to the core-mantle boundary is
Between the Buttons of something really special and he was messing it up. But the way Brian appeared to not give a shit is exactly what the band was about." Outtakes from this photo session were later used for the cover and inner sleeves of the 1972 ABKCO compilation release "More Hot Rocks (Big Hits & Fazed Cookies)". The back cover of "Between the Buttons" is dominated by a six-panel cartoon accompanied by a rhythmic poem drawn by drummer Charlie Watts. When Watts asked Oldham what the title of the album would be, he told him it was "between the buttons", a term