GLACIAL GEOLOGIC MAPPING OF THE MONTEZUMA WETLANDS COMPLEX IN CENTRAL, NY: DEVELOPING 3D GEOLOGIC FRAMEWORKS TO RESOLVE HYDROSTRATIGRAPHIC AND GLACIAL CHRONOLOGIC PROBLEMS
Excavations completed in 2008 revealed a complex stratigraphy inclusive of multiple buried peat horizons containing well preserved buried trees and abundant organic materials of Younger Dryas age. Follow up investigations revealed the presence of anomalous salt springs distributed throughout the wetlands. Detailed geologic field mapping in concert with LIDAR data, exploratory drilling and integrated geophysics provide robust information to understand complex glacial stratigraphic frameworks that govern surface water groundwater interaction.
As the Ontario Lobe of the Laurentide Ice Sheet retreated large high energy ice marginal channels routed meltwater into a drumlinized archipelago of early phase Lake Iroquois. Robust radiocarbon dates coupled with internally consistent stratigraphy from numerous boreholes provide a powerful set of data to constrain ice marginal positions, meltwater pulses and proglacial lake successions in central New York.
As one of the largest wetland systems in the Great Lakes region, detailed three-dimensional geologic mapping of the Montezuma Wetlands Complex provides natural resource officials an invaluable tool to manage ecosystems and water resources, understand the natural history, and plan for potential impacts of climate change.