Jules Marcou

Jules Marcou (April 20, 1824 – April 17, 1898) was a French,Swiss and Americangeologist.

He was born at Salins, in the département of Jura, in France. He was educated at Besançon and at the Collège Saint Louis, Paris. After completing his studies, he made several excursions through Switzerland to recover his health. These trips led him to devote himself to natural science. During these trips, he met Jules Thurmann (1804-1855), who in turn introduced him to Louis Agassiz.

In 1845, he worked with Thurmann on a geological survey of the Jura mountains. He was appointed assistant in the mineralogical department of the Sorbonne in 1846, and also classified its collection of fossils. During this time, he conducted geological investigations in various parts of Europe. In 1847 he went to North America as traveling geologist for the Jardin des Plantes, charged with studying the United States and the English possessions in North America. In the following year, he joined Agassiz in Boston, and accompanied him to the Lake Superior region, visiting the copper mines of the Keweenaw Peninsula, Lake Huron, and Niagara. After six months, he returned to Cambridge, Massachusetts, and sent minerals he had collected to Paris.

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