Deposition Rates in Valleys Determined Using Fallout Cesium-137

Many of man9s cultural activities have accelerated the deposition of sediment in valleys, yet in most places these rates are low and difficult to measure. Sediment profiles collected in northern Mississippi had a range of deposition rates from 0.9 to 6.5 cm/yr as determined using fallout cesium-137. These deposition rates are similar to rates determined along these same ranges using the survey techniques.