(en) Charles Darwin, Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world under the command of Capt. Fitz Roy, Londres, John Murray, (1re éd. 1839) (lire en ligne), chap. XVII (« Galapagos archipelago »), p. 373
(en) Sir Henry Enfield Roscoe, « Weekly evening meeting, Friday, June 1, 1900 : Bunsen », Notices of the proceedings at the meetings of the members of the royal Institution of Great Britain with abstracts of the discourses delivered at the evening meetings, Londres, , p. 443 (lire en ligne)
darwin-online.org.uk
(en) Charles Darwin, Geological observations on the volcanic islands visited during the voyage of H.M.S. Beagle : together with some brief notices of the geology of Australia and the Cape of Good Hope. Being the second part of the geology of the voyage of the Beagle, under the command of Capt. FitzRoy, R.N. during the years 1832 to 1836, Londres, Smith Elder and Co, (lire en ligne), chap. V (« Galapagos archipelago »), p. 98-108
google.fr
books.google.fr
(de) Wolfgang Sartorius von Waltershausen, « Ueber die Submarinen vulkanischen Ausbrüche in der Tertiär-Formation des Val di Noto : im vergleich mit verwandten Erscheinungen am Aetna », Göttinger Studien, Göttingen, Handenhoeck und Ruprecht, , p. 402 (lire en ligne)
(de) Wolfgang Sartorius von Waltershausen, « Physisch-geographische Skizze von Island mit besonderer Rücksicht auf vulkanische Erscheinungen », Göttinger Studien, Göttingen, Handenhoeck und Ruprecht, , p. 85 (lire en ligne)
