31. As it is entrained, it cools and acts a heat shield for the surface layer . 32. The cooling near-surface layer contracted, while the interior expanded. 33. The surface layer of the LID receives both direct rainfall and runon from other areas. 34. This creates a moving band of heat which when quenched creates the hardened surface layer . 35. The cooling near-surface layer contracted and the interior expanded. 36. Osteocytes remain alive and are connected by cell processes to a surface layer of osteoblasts. 37. It feeds on aufwuchs, a surface layer of mostly algal material that grows on rocks. 38. However, the thus produced color is restricted to a thin surface layer of few micrometers. 39. A scouring at the cleaners removed only the surface layer of nearly three decades of grime. 40. These glaciers overrode the area several times, removing the eroded surface layer down to the bottom.
