Toadstool Geologic Park Activity Booklet
United States Department of Agriculture TOADSTOOL GEOLOGIC PARK OGLALA NATIONAL GRASSLAND, NEBRASKA PREHISTORIC MAMMALS FROZEN IN STONE SEE LEARN FOSSIL TRACKS ALONG BOUT OSSILS AND THE A PREHISTORIC RIVER A F CREATURES WHO MADE THEM PLUS NEBRASKA COVERED UZZLES ODES BY ANCIENT SWAMPS, EXPLORE P , C , CEANS AND LACIERS AND ACTIVITIES! O , G THE AGES OF THE EARTH REAT AMMALS HO G M W THE STRANGE AND WONDERFUL ALKED THE ARTH W E TOADSTOOLS OF NEBRASKA AND ARE NOW EXTINCT Forest Service FS-1162 January 2021 TOADSTOOL GEOLOGIC PARK, OGLALA NATIONAL GRASSLAND The fascinating landforms of Toadstool Geologic to erosion. When softer, less cemented rock Park hold the secrets of an ancient world where underlies harder, erosion-resistant rock, the strange and wonderful animals walked the Earth. softer rock will be more easily eroded by water Imagine seeing rhinoceroses, miniature horses, and wind, undermining the harder resistant giant tortoises, camels, and a wild pig so huge rock. The harder rock pieces cap the eroded and ferocious that it’s called the “hell pig” in material, forming many unique landforms western Nebraska. These creatures inhabited including toadstools, in what is known as a a landscape unlike the one you see today. Fifty “badlands” landscape. At Toadstool Geologic million years ago, western Nebraska was a Park, sandstone is the harder rock forming the vast, open savannah with streams meandering caps of the toadstools and finer grained silts and through forests. Far to the west, volcanoes clays are the more easily eroded rocks forming erupted and ash drifted east to cover the the pillars.
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