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Published online by Cambridge University Press: 01 May 2009
Mr. Geo. G. Holmes and others have observed the remarkable and highly suggestive fact that not only do the schists (which contain in many places interlaminated beds of quartzites and massive crystalline limestone, e.g. in the Dwarsberg on the Magalakwin River in the Northern Transvaal) appear interbedded in the gneisses, but that the strike foliation and planes of schistosity of these old schists and of the gneisses seem invariably to be parallel.
page 543 note 5 Personally communicated. Also vide “Some Notes on the Geology of the Northern Transvaal,” by Holmes, Geo. G. (Trans. Geol. Soc. S. A., 1904, vol. vii, pt, i, p. 52)Google Scholar, and Rogers, A. W., loc. cit., p. 41.Google Scholar
page 544 note 1 It would seem probable that the later granitic intrusions were due to these same earth-movements.
page 544 note 2 “The Geology of the South-Western Transvaal,” by Geo. Holmes, G.: Trans. Geol. Soc. S. A., 1906, vol. ix, p. 95.Google Scholar
page 544 note 3 The Geology of South Africa, by Rogers, A. W., 1905 (Longmans, Green, &Co., London), p. 67.Google Scholar
page 544 note 4 The geological horizon of these beds is above the Namaqualand schists, from which they are probably separated by an unconformity.
page 545 note 1 The origin of the Witwatesrand syncline can be explained in a similar manner.
page 545 note 2 Second Report of the Geological Survey of Natal and Zululand, by Anderson, Wm., F. R. S. E., Government Geologist, 1904 (West, Newman, & Co., London), p. 13.Google Scholar
page 545 note 3 Third and Final Report of the Geological Survey of Natal and Zululand, by Anderson, Wm., F. R. S. E., Govenment Geologist, 1907 (West, Newman, & Co., London), pp. 108–13.Google Scholar
page 545 note 4 He says this limestone has undoubtedly originated as a sedimentary deposit, loc. cit., p. 111.
page 545 note 5 Loc. cit., pp. 109, 113.
page 545 note 6 Second Report of the Geological Survey of Natal and Zululand, by Anderson, Wm., F.R.S.E., Government Geologist, 1904 (West, Newman, & Co., London), pp. 11, 12.Google Scholar
page 546 note 1 The Geology of Cape Colony, by Rogers, A. W., 1905 (Longmans, Green, & Co.), p. 38.Google Scholar
page 546 note 2 Loc. cit., p. 64.
page 546 note 3 Loc. cit., p. 643.
page 547 note 1 “Notes on the Geology of Mashonaland and Matabeleand”, by Chalmers, J. A. and Hatch, : Geol. Mag., 1895, Dec. IV, Vol. II, No. ccclxxi, p. 193 et seq.CrossRefGoogle Scholar
page 547 note 2 “A Contribution to the Geology of German South-West Africa”, by Dr. Voit, F. W.: Trans. Geol. Soc. S. A., vol. vii, pt. ii, p. 84.Google Scholar
page 547 note 3 Loc. cit., pp. 77–94. Also vide “Copper Ore in South-West Africa,” by Kuntz, J.: Trans. Geol. Soc. S. A., vol. vii, pt. ii, pp. 70–6.Google Scholar
page 547 note 4 Second Report of the Geological Survey of Natal and Zululand, by Anderson, Wm. F.R.S.E., Government Geologist, 1904, p. 23.Google Scholar
page 548 note 1 The Geology of South Africa, by Hatch, & Corstorphine, , 1905 (Macmilan & Co.), p. 105.Google Scholar
page 548 note 2 “On the Structure and Relations of the Laurentian System in Easern Canada,” by Professor Adams, F. D. D.Sc., F.R.S., Quart Journ. Geol. Soc., vol. lxiv, No. ccliv, p. 146.Google Scholar
page 548 note 3 Loc. cit., p. 147.
page 549 note 1 “Remarks on the Vredefort Mountain-Land”, by Molengraaff, G. A. F.: Trans. Geol. Soc. S. A., vol. vi, pt. ii, pp. 20–6.Google Scholar
page 549 note 2 Loc. cit., p. 145. In Great Britain the sequence from the very oldest to the most recent rocks as one travels from the north-west of Scotland to the south-east shores of Éngland is very marked.
page 551 note 1 The Witwatersrand and Associated Beds, by Horwood, C. B., 1905 (Esson and Perkins, Johannesburg), pp. 70–1.Google Scholar
page 551 note 2 Analyses quoted by Teall, , Brit. Petrog., 1888, pp. 310–50.Google Scholar
page 551 note 3 Horwood, C. B., loc. cit., pp. 70–1.Google Scholar
page 552 note 1 Quantitative Classification of Igneous Rocks, by Cross, , Iddings, Pirsson, and Washington, 1903 (University of Chicago Press).Google Scholar
page 554 note 1 “Alkalicalcic Rang of Columbare, the quarfelic order of Persalane, Class I, from the Granites of the Riesengebirge, Silesia”: Milch. Neu. Jb., 1899, B. Bd. xii, pp. 152–222.
page 554 note 2 “Dosodic Sub-rang of Vaalose, the Alkalicalcic Rang of Vaalare, the quardofelic order of Salfemane, Class III, Cohen”: Neu. Jb., 1887, B. Bd. v, pp. 233–47.