FIELD TRIP: SPRING GREEN PRAIRIE FIELD TRIP

At the end of the Ice Age about 10,000 years ago the climate warmed fast and the melting

glaciers released enormous amounts of water, forming vas shallow lakes geologists

named "Glacial Lake Oshkosh, Glacial Lake Wisconsin, Glacial Lake Baraboo", etc.

When the meltwaters broke through the Baraboo Range forming the Wisconsin Dells, the

water flowed west to the Mississippi gouging a huge canyon out of the the sandstone

sedimentary layers, creating a wide sandy canyon with steep sandstone and limestone