21. He demonstrated that these variations are linked to plate tectonic processes at mid-ocean ridges . 22. The crust is in a constant state of " renewal " at the ocean ridges . 23. As this basaltic material reaches the surface at mid-ocean ridges , it forms new oceanic crust. 24. He was 90 and had lived in Ocean Ridge , Fla . and Martha's Vineyard, Mass. 25. Sugden, 47, of Ocean Ridge blames his attorney for deceiving him with a plea deal. 26. At the same time, the upwelling of mantle material at divergent boundaries creates mid-ocean ridges . 27. Decompression melting creates the ocean crust at mid-ocean ridges . 28. These rocks are similar but not identical to those that are produced at ocean ridges . 29. As of 2000, Ocean Ridge had the nineteenth highest percentage of Palm Beach Shores .) 30. At the same time, upwellings of mantle material create a divergent boundary along mid-ocean ridges .
