| Abstract: | An analysis of Goethe's Farbenlehre (Theory of Colours), and of its significance for the development of geological mapping, requires an interdisciplinary approach and specific knowledge of both the history of cartography and the science of chromatics. Thus far there has been little research in either of these areas by historians of geological cartography or by students of Goethe's Farbenlehre. In particular, the influence of Goethe's Theory of Colours on early geological map colouring has not yet been explored, and the present article is an attempt to rectify that omission. After an introduction to the emergence of geological maps during the Age of Enlightenment, the discussion focuses on Goethe's substantial contribution to the selection of colours for Christian Keferstein's General Charte von Teutschland (1821). Detailed study of the available textual and cartographical source material reveals that Goethe applied the principles of his Farbenlehre as a basis for the colour chart that Keferstein used to delineate the rock formations shown on his map. The article concludes with a brief consideration of the extent to which the joint Goethe–Keferstein venture influenced the future of geological map design. |
