Hostname: page-component-745bb68f8f-s22k5 Total loading time: 0 Render date: 2025-01-10T06:25:38.336Z Has data issue: false hasContentIssue false
  • English
  • Français

The Origin of the Dwyka Conglomerate of South Africa and other “Glacial” Deposits.

Published online by Cambridge University Press:  01 May 2009

C. G. S. Sandberg
Get access Rights & Permissions [Opens in a new window]

Extract

To reopen a question which has seemed definitely settled ever since 1898, and which has accordingly become an accepted opinion in geological circles, is neither a pleasant nor an enviable task. Yet, as the question is one of universal interest geologically, it has to be tackled and settled. In the following I intend to discuss the problem in a manner as objective and concise as possible, in order to concentrate the argument on the points which fundamentally govern the problem. As, from personal observations on the spot I am only familiar with the South African occurrence, I intend discussing that one only, however likely it be that the arguments brought forward may fundamentally affect the appreciation of other similar occurrences in South America and Asia.

Type
Articles
Information
Geological Magazine , Volume 65 , Issue 3 , March 1928 , pp. 117 - 139
Copyright
Copyright © Cambridge University Press 1928

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

LIST OF AUTHORS QUOTED

(1)Bain, A. G., “On the Geology of South Africa”: Trans. Geol. Soc. Lond., vol. vii, 1856, pp. 175–92.Google Scholar
(2)und, W. Branco Fraas, E., “Das vulkanische Ries bei Nördliugen”: Abh. Kö;n. Preuss. Ak. Wiss., i, 1901, Berlin, pp. 1–160.Google Scholar
(3)Draper, D., “The Dwyka Conglomerate”: Trans. Geol. Soc. S. Afr., vol. i, No. 1, 1896, pp. 90–103 and 104–9.Google Scholar
(4)Draper, D. “Notes on Dr. Molengraaif's Paper”: Trans. Geol. Soc. S. Afr., vol. iv, 1898, pt. vii, pp. 153–6.Google Scholar
(5)Harger, S., “The age of the South African Kimberlites and their occurrence in Cretaeeous Beds”: Trans. Geol. Soc. S. Afr., vol. xxiv, 1921, pp. 1–10.Google Scholar
(6)Hatch, F. H. and Corstorphine, G. S., The Geology of South Africa, London, 1905.Google Scholar
(7)Haug, E., Traité de Géologie, i, Paris, 1907.Google Scholar
(7a)Kemmerling, G. L. L., De hernieuwde werking yen den vulkaan G. Merepi, Vulk. Med., No. 3, 1921, Dienst v. h. Mynw. Weltevreden.Google Scholar
(8)Lacroix, A., La Montagne Pelée et ses Éruptions, Paris, 1904.Google Scholar
(9)Leslie, T. N., “Presidential Address”: Min. Proc. Geol. Soc. S. Afr., 1921, pp. xix–xxxi. See p. xxiii.Google Scholar
(10)Mellor, E. T., “Outliers of the Karroo-System, etc.”: Trans. Geol. Soc. S. Afr., vol. vii, 1904, pp. 133–5.Google Scholar
(11)Mellor, E. T., “On Some Glaciated Land Surfaces”: loc. cit., pp. 18–26.Google Scholar
(12)Molengraaff, G. A. F., The Geology of the Transvaal, Esson & Perkins, Johannesburg, 1904.Google Scholar
(13)Molengraaff, G. A. F., “The Glacial Origin of the Dwyka Conglomerate”: Trans. Geol. Soc., vol. iv, pt. v, 1898, pp. 103 ff.Google Scholar
(14)Reck, H., “Isländische Masseneruptionen”: Geol. Paleont. Abh. v. E. Koken, Jena, 1910, N.F., Bd. ix, Hft. 2, pp. 48–9.Google Scholar
(15)Rutten, L. M. R., Voordrachten over de Geologie van Nederlandsch Oost-Indië Groningen, J. B. Wolters, 1927.Google Scholar
(16)Sandberg, C. G. S., “On the probable Origin of the Members of the Bushveld Igneous Complex”: Geol. Mag., Vol. LXIII, No. 743, 1926, pp. 210–19.CrossRefGoogle Scholar
(17)Sandberg, C. G. S. “Recent Volcanic Eruptions in Central Alpine, so-called ‘Hercynian’ Zone”: Geol. Mag., Vol. LXIII, No. 748, 1926, pp. 469–78.CrossRefGoogle Scholar
(18)Sandberg, C. G. S. “Einiges über die Zentral-sog. “Herzynischen” Massive, u.s.w.”: Zeitschr. der Deutsch. Geol. Ges., Bd. 79, 1927, Abh. 1 u. 2, pp. 122–35.Google Scholar
(19)Stutzer, G., “Ueber einige Ergebnisse meiner geologischen Reisen in Kolumbien”: Zeitschr. d. Deutsch. Geol. Ges., Mon. Ber., 1–2, Bd. 79, 1927, pp. 5–13.Google Scholar
(20)Taverne, N. J. M., “De Aardbevingen van Wonosobo, etc.”: Vulk. Med., No. 8, Dienst v.h. Mynw. in N.I. Weltevreden, 1924.Google Scholar
(21)Taverne, N. J. M. “Vulkaanstudieën op Java”: Vulk. Med., No. 7, Dienst v.d. Mynb., The Hague, 1926. (Volcanobogical Studies in Java.).Google Scholar
(22)Toit, A. L. du, “The Carboniferous Glaciation of South Africa”: Trans. Geol. Soc. S. Afr., vol. xxiii, 1921, pp. 188–227, with map.Google Scholar
(23)Toit, A. L. du The Geology of South Africa, Oliver and Boyd, London, 1926.Google Scholar
(24)Wagner, P. A., “Note on the Volcanic Origin of the Salt Pan, etc. (Transvaal)”: Trans. Geol. Soc. S. Afr., vol. xxiii, 1921, pp. 53–8.Google Scholar
(25)Wolff, F. V., Der Vulkanismus, Stuttgart, 1914.Google Scholar
(26)en, W. F. F. Oppenoorth Zwierzycki, J., Landschapvormen in Noord-Sumatra. Jaarb. v.h. Mynwezen. Verh., 1917, Batavia, 1918, p. 2.Google Scholar