(1750–1817). German geologist Abraham Gottlob Werner was born on September 25, 1750, in Wehrau, Saxony. He founded the Neptunist school of geology, which proclaimed the aqueous (from water) origin of all rocks. He came into conflict with the Plutonists, or Vulcanists, who believed in the igneous origin of granite and others. Werner rejected uniformitarianism (the belief in geological evolution as a uniform and continuous process). He spent 40 years at the Freiberg School of Mining, turning it into a world-renowned center of scientific learning. Werner proposed that volcanoes were recent phenomena caused by the spontaneous combustion of underground coal beds. He wrote 26 works, mostly short contributions to journals. Werner died on June 30, 1817, in Freiberg.