Abstract
Within Michigan's Southern Peninsula, the presence of glacially buried Pleistocene organic matter is relatively uncommon but more abundant than previously recognized. These deposits tend to be concentrated in 13 districts and are most closely related to (1) places with high relief on the drift-covered bedrock surface, (2) the extent of buried bedrock valleys, and (3) low areas on a palimpsest paleosurface. Well logs show that multiple organic horizons at any one site are extremely rare, but variations in location, elevation, types of material with their climatic implications, and radiocarbon dates support the conclusion that remnants of several Pleistocene paleosurfaces, preserved through burial by deposits from separate glacial advances, exist at a number of places, especially in the southern part of the peninsula.
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