Published online by Cambridge University Press: 06 July 2012
The special interest of South Georgia depends on its evidence regarding the geology of the part of the Southern Ocean which lies south of the South Atlantic. According to Professor Suess, the island is an extension of the Andes, which, at the southern end of South America, turn eastward, and by a great horse-shoe-shaped curve pass through South Georgia to the South Orkneys and Graham Land.
The geology of South Georgia is but little known. Thürach † described the island as consisting of metamorphic rocks, ranging from granular gneiss to clay-slate, and of diabase tuff.
page 817 note † Thürach, H., “Geognostische Beschreibung der Insel Süd-Georgien,” Internat. Polarforschung 1882–83: Die deut. Exped., vol. ii, 1890, No. 7, pp. 109–166.Google Scholar
page 817 note ‡ Internat. Polarforschung 1882–83: Die deut. Exped., p. 131.
page 817 note § Internat. Polarforschung 1882–83: Die deut. Exped., pp. 154, 157, 158.
page 817 note ║ Heim, F., “Geologische Beobachtungen über Süd-Georgien,” Zeit. Ges. Erdk., Berlin, 1912 (No. 6), pp. 451–456.Google Scholar
page 819 note * Geol. Surv. Illinois, vol. viii, pt. ii, Paleontology, Sect. 5, “Descriptions of Lower Silurian Sponges,” 1890, pp. 280–1, pl. vii, fig. 1.
page 820 note * Hall, Jas., Palæont., New York, vol. i, 1847, p. 62, pl. xxii, fig, 2a.Google Scholar
page 820 note † Op. cit., p. 255.
page 821 note * Geikie, A., “Notes on some Specimens of Rocks from the Antarctic Regions; with Petrographical Notes by J. J. H. Teall, F.R.S.,” Proc. Roy. Soc. Edin., vol. xxii (1897–1899), 1900, p. 67.Google Scholar