XIX.—The Petrography of Jan Mayen

G. W. Tyrrell

doi:10.1017/S0080456800016161

XIX.—The Petrography of Jan Mayen

Published online by Cambridge University Press: 06 July 2012

G. W. Tyrrell

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G. W. Tyrrell: Affiliation:
Lecturer in Geology, University of Glasgow.

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Jan Mayen is so inaccessible and so infrequently visited that very little geological and petrographical work has been done on the island. Some rocks were collected during the Austrian “Pola Expedition” of 1882–3; and these were described by Scharizer as porphyritic olivine basalts, with one example of ægirine-trachyte. Four analyses were given, but their quality is so poor that they are practically useless for scientific discussion. Washington lists only one of these, and that among the analyses of inferior quality. The only modern petrographic work that has been done on Jan Mayen rocks is the description of an olivine-trachyandesite by Dr Holmes accompanied by a first-rate chemical analysis by Dr H. F. Harwood, which forms a valuable addition to the seven new analyses recorded in this paper.

Type: Research Article
Information: Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 54 , Issue 3 , 1926 , pp. 747 - 765

DOI: https://doi.org/10.1017/S0080456800016161 [Opens in a new window]
Copyright: Copyright © Royal Society of Edinburgh 1926

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^{page 747 note *} Jahrb. Geol. Reichanst., Wien, xxxiv, 1884, p. 707Google Scholar.

^{page 747 note †} “Chemical Analyses of Igneous Rocks, 1883–1913,” Prof. Paper, U.S. Geol. Surv., No. 99, 1917. pp. 1082–3.

^{page 747 note ‡} Holmes, A., “The Basalts of the Arctic Region,” Min. Mag., xviii, 1918, pp. 180–223;Google ScholarJan Mayen, pp. 202–5.

^{page 747 note §} “Jan Mayen Island,” Geog. Journ., lix, 1922, pp. 180–94Google Scholar.

^{page 748 note *} For locality references see paper and map by Wordie, J. M., these Transactions, liv, pt. iii., p. 743Google Scholar.

^{page 749 note *} Minéralogie de Madagascar, t. iii, 1923, p. 24Google Scholar.

^{page 749 note †} W.T., p. 278 (W.T. = Washington's Tables. For full reference see p. 747.)

^{page 749 note ‡} Igneous Rocks and Their Origin, 1914, p. 22.

^{page 749 note §} W.T., p. 276.

^{page 751 note *} Osann-Rosenbusch, Elem. d. Gesteinslehre, 4th ed., 1923, pp. 415–8.

^{page 751 note †} Min. de Madagascar, t. iii, 1923, pp. 328–9Google Scholar.

^{page 751 note ‡} Min. Mag., xix, 1921, p. 144Google Scholar.

^{page 752 note *} Igneous Rocks and Their Origin, 1914, p. 30.

^{page 752 note †} Ibid., p. 27.

^{page 753 note *} The Jan Mayen analyses are numbered consecutively throughout the tables.

^{page 753 note †} Less O for S, 100·41.

^{page 754 note *} Min. de Madagascar, t. iii, 1923, p. 53Google Scholar.

^{page 755 note *} Igneous Rocks and Their Origin, 1914, p. 31.

^{page 755 note †} Comptes Rendus, Paris, t. clxiii, 1916, p. 182Google Scholar.

^{page 756 note *} Min. de Madagascar, t. iii, 1923. p. 49Google Scholar.

^{page 756 note †} Ibid.

^{page 757 note *} Less O for S, 100·67.

^{page 757 note ‡} Min. de Madagascar, t. iii, 1923, pp. 49–50Google Scholar.

^{page 757 note §} N. J. f. Min., 1923, Bd. 8, Heft 2, pp. 226–31Google Scholar.

^{page 757 note ∥} Peacock, M. A., “A Contribution to the Petrography of Iceland,” Trans. Geol. Soc. Glasg., xvii, part 2, 1924–1925, pp. 288–90Google Scholar.

^{page 757 note †} Amer. Journ. Sci., v, 1923, p. 501;Google Scholar vi, 1923, pp. 344–7.

^{page 758 note *} Washington, H. S., “Deccan Traps and Other Plateau Basalts,” Bull. Geol. Soc. Amer., xxxiii, 1922, pp. 765–803CrossRef Google Scholar.

^{page 759 note *} “Microscopical Characters of Volcanic Tuffs,” Amer. Journ. Sci., xl, 1915, pp. 191–211Google Scholar.

^{page 759 note †} Scheumann, “Zur Genese alkalisch-lamprophyrisch Ganggesteine,” Centr. f. Min., 1922, pp. 495–520, 521–45.

^{page 759 note ‡} J. H. L. Vogt, “Die Physikalisch-Chemischen Gesetze der Magmatischen Differentiation,” Videnskaps-skr., I, Math. Nat. Kl. Kristiania, 1923, No. 17, p. 5.

^{page 760 note *} Less O for S, 100·41.

^{page 760 note †} Min. Mag., xviii, 1918, pp. 215–8Google Scholar.

^{page 762 note *} Grout, F. F., “Graphic Study of Igneous Rock Series,” Bull. Geol. Soc. Amer., xxxiii, 1922, p. 620Google Scholar.

^{page 762 note †} A. Holmes, Petrographic Methods and Calculations, 1921, pp. 447–51.

^{page 762 note ‡} This “Bowen-Anderson effect” has now been widely noted in basic lavas. See Washington, H. S., “Petrology of Hawaiian Islands. I. Kohala and Mauna Kea,” Amer. Journ. Sci., v, 1923, pp. 469–70;Google Scholar and Lacroix, A., “La notion de type doliomorphe en lithologie,” Comptes Rendus, Paris, t. 177, 1923, pp. 661–5Google Scholar.

^{page 763 note *} Trans. Geol. Soc. Glasg., xvii, pt. 2, 1924–1925, pGoogle Scholar.

^{page 764 note *} “Basaltic Rocks of the Arctic Regions,” Min. Mag., xviii, 1918, p. 220Google Scholar.

^{page 764 note †} “Later Stages of Evolution of Igneous Rocks,” Journ. Geol., xxiii, 1915, Suppl., pp. 77–8Google Scholar.

^{page 765 note *} M. A. Peacock, op. cit., pp. 281 et seq.

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