EARTH AS AN EVOLVING PLANETARY SYSTEM Part 1 ppt

[...]... to +10 0 10 0 to +50 0 to +200 0.30 0.25 0.30 0.27 U S U, I I, U U 10 0–200 50 50 15 0 60–80 45 +200 to +250 +250 to +350 +50 to +10 0 +250 10 0 to 15 0 0.22 0.29 0.25 0.25 0.29 55 10 0 0.27 67 (95)* +250 Area (%) Volume (%) Stability 6 18 11 35 S S, I 40 49 8 6 2 13 14 4 S I, U I, U 1 1 3 1 1 1 3 1 Oceanic 9 Ocean ridge 10 Ocean basin 11 Marginal-sea basin 12 Volcanic island 13 Trench 10 38 4 .