Christian Leopold von Buch, usually cited as Leopold von Buch, was a German geologist and paleontologist born in Stolpe an der Oder and is remembered as one of the most important contributors to geology in the first half of the nineteenth century. His scientific interest was devoted to a broad spectrum of geological topics: volcanism, petrology, fossils, stratigraphy and mountain formation. His most remembered accomplishment is the scientific definition of the Jurassic system.