{"product_id":"roadside-geology-of-minnesota-9780878425624","title":"Roadside Geology of Minnesota","description":"You may have heard that Minnesota�s ten thousand lakes are the hoofprints of Paul Bunyan�s big blue ox, Babe. �Don�t you believe it!� writes author Dick Ojakangas. Though the lakes, which formed at the end of the most recent ice age, may be Minnesota�s most famous features, the glaciated countryside disguises a much longer history of volcanoes and plate collisions�not surprising when you learn that Minnesota was at the active edge of the fledgling North American continent for several billion years.\u003cbr\u003e\u003ci\u003eRoadside Geology of Minnesota\u003c\/i\u003e steers you over glacial moraines and till plains to some of the state�s unparalleled geologic features, such as the Morton Gneiss, once thought to be the oldest rock on Earth; the St. Peter Sandstone, one of the purest sandstones in the world; the banded iron-formation, the source of iron for the Great Lakes steel industry; and the ancient shorelines of Glacial Lake Agassiz, one of the largest glacial lakes ever to have existed in North America. The book�s introduction presents an overview of Minnesota�s geologic history, and forty-two road guides discuss the landforms and rocks visible from a car window and at nearby waysides and parks, including Pipestone National Monument, Grand Portage National Monument, and Voyageurs National Park.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Richard W. Ojakangas\u003cbr\u003e\u003cb\u003eBinding Type:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Mountain Press\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 09\/15\/2009\u003cbr\u003e\u003cb\u003eSeries:\u003c\/b\u003e Roadside Geology\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 355\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 1.49lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 8.90h x 6.00w x 0.90d\u003cbr\u003e\u003cb\u003eISBN:\u003c\/b\u003e 9780878425624","brand":"Ripon Bookstore","offers":[{"title":"Paperback","offer_id":44146965676077,"sku":"9780878425624","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/0501\/1245\/files\/img_4e7bf726-a383-4a8a-96c2-85486403b8b5.jpg?v=1757180884","url":"https:\/\/riponbookstore.com\/products\/roadside-geology-of-minnesota-9780878425624","provider":"Ripon Bookstore","version":"1.0","type":"link"}