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Archean Greenstone Belts
Have you ever wondered how the Mississippi River was formed? Or why shark teeth have been found in the Iron Range of the Upper Midwest? Towering mountain ranges, explosive volcanoes, expansive glaciers, and long-extinct forms of both land and sea life were an important part of Minnesota's ancient history. Today the evidence of this remarkable heritage is revealed in the state's rocky outcroppings, stony soils, and thousands of lakes.
Distinguished space historian Harland tells an inspiring tale of scientific discovery with two interwoven strands tracing the earths geological history and the Earth in relation to the solar system. 100 illustrations.