CHARACTERIZATION AND IMPLICATIONS OF GEOMORPHIC RESPONSE TO LATE-QUATERNARY CLIMATE VARIATIONS IN A SANDY, LOW-RELIEF TERRAIN
Each of these scenarios present different geomorphic responses to climate fluctuations since the last glaciation, and each have different implications to modern landuse practices. A mantle that resulted from periglacial pedimentation and/or eolian activity suggest geomorphic stability for the last ~18-12 ka, despite climate and land use variations. On the other hand, a mantle produced by bioturbation and Holocene hillslope processes suggests a more dynamic landscape that is prone to erosion and degradation.
Surface soil samples were collected across the study area and analyzed for particle size distribution. Silt content was used to make interpolation maps in ArcMap, the results of which suggest the highest surface silt contents occur southeast of topographic barriers. This is consistent with regional northwesterly paleowinds and an eolian interpretation. Soil profile data also suggest Holocene hillslope processes are largely absent. Future work is necessary to explore the role of bioturbation in this landscape.