31. Most often, the arch dam is made of concrete and placed in a " V "-shaped valley . 32. Glacial U-shaped valleys are found on the northern and western flanks, giving the volcano some angular patterns. 33. Glaciers grew in the Sierra highlands and made their way down former stream channels, carving U-shaped valleys . 34. Numedal is a largely a U-shaped valley . 35. Geologists didn t always believe that glaciers were responsible for U-shaped valleys and other glacial erosional features. 36. :In the docile plain there opened a gorge perhaps half a mile wide, leading to a bowl-shaped valley . 37. After deglaciation, snow and ice melt from the mountain tops can create streams and rivers in U-shaped valleys . 38. The landscape has been shaped and molded by ice age glaciers; it contains U-shaped valleys and glacial striae. 39. Flowing from higher to lower elevations, the glaciers created more than a dozen U-shaped valleys throughout the range. 40. The V-shaped valleys of the Ore Mountains break through this fault and the shoulder of the Dresden Basin.
