Muscle spasms in the legs are quite common and usually present themselves in the calves, just below the back of the knee. Pain during a muscle spasm can range from mild to severe, and can last up to 10 minutes.ack Muscle Spasms. Many times back spasms are the result of inflammation or soreness of a particular muscle in the back due to sudden movement at an incorrect angle. Muscle spasms in the back are quite common, even over-straining the back muscles while completing household chores can cause spasms.
Denoting rocks composed of broken pieces of older rocks: a group of clastic sediments such as conglomerates. More example sentences. 1  Mechanical deposition, by water or wind, produces clastic rocks composed of broken fragments, generally of silicate minerals and small pieces of rock: sandstones and conglomerates. In contrast, the Cambrian clastic rocks are characterized by a paucity of these zircons, suggesting a significant difference between Neoproterozoic and Cambrian drainage systems.
Conglomerate is a clastic sedimentary rock that contains large (greater than two millimeters in diameter) rounded clasts. The space between the clasts is generally filled with smaller particles and/or a chemical cement that binds the rock together. Conglomerate can have a variety of compositions. As a clastic sedimentary rock it can contain clasts of any rock material or weathering product that is washed downstream or down current. The rounded clasts of conglomerate can be mineral particles such as quartz or they can be sedimentary, metamorphic or igneous rock fragments.