Eberhard Rimann, geologist and academic, studied geology and mineralogy and qualified with an inaugural dissertation entitled Beitrag zur Kentniss der diabase des Fichtelgebirges, im besonderen des Leukophyrs Guembel's (1906). He also passed the necessary examinations to qualify as mine surveyor and mining engineer. A few years later he obtained his doctoral degree with a thesis on Der geologische Bau des Jergebirges und seines noerdlichen Vorlandes (1910).
During 1910-1911 Riman was in German South West Africa (now Namibia), where he studied the geology of the area around Rehoboth and the region inhabited by the Khauas Hottentots (south of Gobabis) for the Hanseatischen Minen-Gesellschaft. His observations were reported in Geologische Karte des Khauas-Hottentottenlandes in Deutsch-Suedwestafrika (westliche Kalahari), on a scale of 1:400 000, with an explanation (Berlin, 1913, 43p); and Geologische untersuchungen des Bastardlandes in Deutsch-Suedwestafrika (Berlin, 1915), with a map on a scale of 1:200 000. He also published papers on the origins of the Kalahari sand and lime pans (1914), copper ores in the territory (1914), and his geological route notes and cross-sections (1916).
In 1920 Rimann was appointed professor of mineralogy and geology at the Technische Hochschule (Technical University) at Dresden, a position he held until his death in 1944, though towards the end of his life he suffered severe illness. During this period he published on the geology of Argentina and Brazil. He was also in charge of the Dresden Museum for Mineralogy, Geology and Prehistory, and donated his own collection to the institution.