Measurment of Riparian Sedimentation Rates with Trace Metal Stratigraphy
Daniel J. Bain, Grace S. Brush
The headwaters of the Red Run, a tributary of the Gwynns Falls, were the location of chromite mining between 1820 and 1880. This activity introduced trace-metal rich sediments to the fluvial system simultaneous to accumulation of sediments disrupted by agricultural activity in floodplain areas. By tying peaks in floodplain metal (i.e., chromium) stratigraphies to historic records of mining activity, relative rates of flood plain sedimentation can be measured. Sedimentation rates from a variety of Red Run area basins (varying in size and character) will be presented and compared with local land use history and other data.
Keywords: fluvial sediment dynamics, historic land use change, chromium, urbanization

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