Our professional staff are experienced in investigating sedimentation rates, background environmental conditions, paleoenvironmental and historical change, and processes of bank erosion, sediment transport and deposition in lakes and reservoirs. To do this, we use a modified piston corer or other coring devices to extract fine-grained sediment cores. Initial core descriptions are supplemented with analytical analyses that include grain-size, mineralogy, organic carbon, pollen and diatoms. Radioisotope and radiocarbon analyses are used to determine sedimentation rates and to establish a chronology of environmental change in lakes and reservoirs. For these projects, we often collaborate with a diverse group of experienced researchers for the collection and analyses of sediment cores.