Who was an American writer responsible for a dissertation concerning  the towns and districts built near sediment formations around Lake Superior?
Iron Range Iron Range refers collectively or individually to a number of elongated iron-ore mining districts around Lake Superior in the United States and Canada. Despite the word "range," the iron ranges are not mountain chains, but outcrops of Precambrian sedimentary formations containing high percentages of iron. These cherty iron ore deposits are Precambrian in age for the Vermilion Range, while middle Precambrian in age for the Mesabi and Cuyuna Ranges, all in Minnesota. Similarly, the Gogebic Range in Wisconsin and the Marquette Iron Range and Menominee Range in Michigan. Natural ores and concentrates were produced from 1848 until the mid 1950s, when taconites and jaspers were concentrated and pelletized started to become the major source of iron production.
Vermilion Point Vermilion Point is a remote, undeveloped shore in Chippewa County, Michigan, United States. Located 9.75 mi west of Whitefish Point, Michigan, this historic spot lies on a stretch of Lake Superior’s southeast coast known as the "Graveyard of the Great Lakes" or the "Shipwreck Coast". The servicemen of Vermilion Lifesaving Station performed daring rescues of shipwrecks from 1877 until 1944 when it was closed after modern navigational technology made this service obsolete.