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Interactive map of the geology of Michigan | American …
Task 1-Grand Traverse Bay Quaternary Geologic Mapping
GeoWebFace Map Page
Quaternary Geology - Michigan Natural Features Inventory
ArcGIS Web Application
Bathymetric map of Grand Traverse Bay, Lake Superior
Michigan Geology 101 - ArcGIS StoryMaps
USGS Geoscience Data about Grand Traverse