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IV.—Geological Notes on the Neighbourhood of Ladysmith, Natal. No. 2: On some Travelled Blocks in the Ecca Shales4
Published online by Cambridge University Press: 01 May 2009
Extract
On both sides of the Klip River running through this district a shale predominates, varying in colour from greyish-brown to purple, having a conchoidal fracture, and the features of Ecca Shale, as described by Dr. Molengraaf (Trans. Geol. Soc. South Africa, vol. iv, pt. 5, pp. 107–112).
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- Copyright © Cambridge University Press 1901
Footnotes
4
For No. 1 see p. 509.
References
page 549 note 5 Since Dr.Molengraaf, 's memoir on “The Origin of the Dwyka Conglomerate,” describing the Ecca Beds as resultants of glacial action, much attention has been given to the subject. See the Trans. Geol. Soc. South Africa, 1898, vol. iv, pp. 103–115Google Scholar; and Nat. Science, 1899, pp. 199–202Google Scholar. In E. J. Dunn's Geological Map of South Africa (1887) the Ecca Beds range only up as far as the Tugela River in Northern Natal. The Ecca Beds described by Dr. Molengraaf are in the Vryheid district, just south of Utrecht and west of Zululand.
page 551 note 1 The kernal of these blocks resembles in microscopic structure the so-called ‘Elephant Rock,’ or ‘Olifant Klip’ of the Transvaal.