20141019 18055000 1.0 Item Description TRUE Inspired by Nevin Melancthon Fenneman originally from work published in 1928. Dependent heavily on the USGS publication on the determination of Landforms of the Conterminous United States by Gail P. Thelin and Richard J. Pike. Dozens of maps were cross referenced for extensions into Canada, Alaska, and Central America with ultimate control of the boundaries determined by direct comparison to NASA’s Earth Observation download of global elevations based on Space Shuttle Radar Topography and ESRI’s multi angle shaded reliefs layered over top at 40% transparency. Many middle school earth science textbooks reference the landforms of United States while others extended their coverage of all of North America. The author worked to minimize differences while using elevations and hillshades to resolve any disparities. Continental borders were based on countries shapefiles from the Esri Data And Maps CD 2007 merged to form the continental border. Removal of some islands was necessary to give the broader picture of gross landforms. <br /> TESS Landforms of North America Phyiographic Landforms Landforms of North America based on work for the lower 48 states in the USGS publication by Gail P. Thelin and Richard J. Pike. USGS Work intended for education use only /9j/4AAQSkZJRgABAQEAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCACFAMgDASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iii gAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKA CiiigAooqCS7jRsck+1BMpKOrZPRUcUySjKnkdQe1NluBFjAz689KLic425r6E1FUUvG3jdjaT6V eHIzSTuKnUjPYKKKKZoFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUjMFUsxwBTMs4 bBwDjaaBN2IriUFvKzjI6571SZTkDOT7VbmTcMyMoKjkgVHbIS7uCp2jjPrUPVnDVTnOzI5f3aiL bg9WPrURYnqadIzO5LnJplSznlK702HK7L0OKvWxeQmRm+XoFrPrVgx5CYBHHeqib4W7kSUUUVZ6 AUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUhOATjP0oAWisp9UIkJAwAcbSKdDrETybHXDdsc1f s52vYzjVTuXbiVYwoZd2T0FMjVOD5pKnOBn86iN2jkb4unQg9KjVdjh1dQMg8msrnPKqnK61RNlR 9xmAXnO3Pc1NbuCCN+49c7cVA0kfmFc4R+OPXPWoxGyoJo2OeTii4lPld1qW54UaFsKAeoIFZlas biaLOQcjBrNlAEjAYx7UpdycSk7SQ0DJwK1YVKxKG64rPhgeQghflzya0xwKIovCQavJhRRRVnYF FFFABRRRQAUUUUAFFFFABRRRQAUUUUAFMmUNC4JYAqeVOD+FPooQHIMjXFwxUSBfVzk/nStbvCTl Ce/PBrqBbp53mlQG9hTpolmjKMAfTPauz610toEpzfoYVrN5q9c8VYqoY2srsqw+VuatAgjI6VzY iCUuZbM8yvDllpsWLaDzXyeFXrVib5YVjdyMgjIHBqrDO0J45B6g1JcyiWOMgYPPfpWKasVCUFTd ty1bxeWnIG71HeqzW5+1gEfIxzmi1nKyFXJIb9Kv01Zo6IRhVgrdBAoVdoGB7UyOIozEyM2fXtUl FUdHKtAooooGFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQBl6ztSFHx8xOM1Rtp1bCZz 6HFbl1bLdQGNuPQ+lc9HC9pceXIMY7jvWySlC27/AK1M6tOMqcr7rUvU0t8wVVLOeiini3llwyA4 xgelWrC0MJaSRsueMelc8Ut2cNKjzNXHw20giKSsOudycGrQGABnNLRVt3PRjFLYKKKKQwooooAK KKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAqvd2i3MZGAH/hY9qsUU02ndCavoUYnltYF jkiOAcFxyMevHNWlJYb42DKwyMjFSU1UCcLkD0zwKbaeolGw4dOaKKKkoKKKKACiiigAooooAKKK KACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAoooo AKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigA ooooAKKKKAP/2Q==