Most people recognize Michigan by its mitten-shaped Lower Peninsula and the Great Lakes embracing the state. Underneath the earth's surface, however, is equally distinctive evidence of an exciting history. Michigan rests on sedimentary rocks that reach down into the earth's crust more than fourteen thousand feet-a depth three-and-a-half times deeper than the Grand Canyon. Within these layers of rock rest all sorts of ancient fossils and minerals that date back to the eras when tropical seas spread across Michigan and hot volcanoes flung molten rock into its skies-long before mile-thick...
Most people recognize Michigan by its mitten-shaped Lower Peninsula and the Great Lakes embracing the state. Underneath the earth's surface, howeve...
There is much more for children to discover about Ohio than first meets the eye. "Under Ohio: The Story of Ohio s Rocks and Fossils," by geologist Charles Ferguson Barker, takes young readers underground to reveal the fascinating story of Ohio s geology. Barker presents this story through colorful illustrations, sending his readers down the Ohio Timepike and back a billion years to when the earth under Ohio split, creating faults that cause the earthquakes felt today. He tells of colliding continents that pushed up mountains taller than the Rockies and of the tremendous impact of the Ice Age,...
There is much more for children to discover about Ohio than first meets the eye. "Under Ohio: The Story of Ohio s Rocks and Fossils," by geologist Cha...
