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| Keywords: The Quarterly journal of the Geological Society of London (12512690215).jpg 10 PROCEEDINGS OP THE GEOLOGICAL SOCIETY NoV 8 <br> Those at the former locality are smooth and polished and where <br> exposed to the action of tlie weather black on the outer surface ; <br> but where covered of a reddish hue They are close hard and <br> compact with a felspathic character At another spot a section <br> of them is given as follows fig 3 <br> Fig 3 Section of Supposed Metamorpliic Roclcs on the <br> Vaal liiver <br> 1 Whitish quartz <br> 2 Quartzose rock <br> 3 Eock similar to b in the lai-ge section fig 2 <br> It appears highly probable that at one time these rocks from 6 <br> to h see the Section fig 2 have been eroded into a wide trough in <br> which the more recent gravels e / and g have been laid down <br> These gravels are evidently of a more recent origin than those at the <br> higher levels and are most probablj composed of materials from <br> the older gravels The gravel and boulders are intermingled in the <br> most confused manner ; and the several bands have irregular lines <br> of bedding and are rather contorted appearing diff'erent from what <br> might have been expected if laid down simply by fluvial action <br> This deposit was at one time very extensive in this locality stretching <br> across the present course of the river and for a considerable distance <br> along the bank of the Hebron side see Map PL I The stream be- <br> fore it cut the new channel through these gravels must have occupied <br> an ancient river-bed which like the one at Cawood's Hope p 6 <br> is now left dry and traversed by flowing water only at the time of <br> a very high flood <br> Du Toifs Pan With regard to Du Toit's Pan which is rapidly <br> becoming the chief centre of attraction to the diggers I have not <br> been able to obtain a trustworthy section nor sufiicient data to <br> form a decided opinion uj on the diamantiferous deposits in that <br> sive sections 1 have lately made it crops up through them ; or rather the de- <br> nudation has been so great in several places tliat it is exposed This seems to <br> be corroborated by information given to me a few days ago by Mr H Southey <br> who says that in the district of Middleberg near the Ehenosterberg there is a <br> strip of country stretching from the Orange River with pans of exactly the <br> same character as those between the Modder and Vaal and that at two of them <br> Groote Fontein and Klip Riff between Middleberg and Craddock numerous <br> garnets have been picked up which seemed to liim to be similar to those from <br> Du Toit's Pan G- W S July 6 1871 34984997 108770 51125 Page 10 Text v 28 http //www biodiversitylibrary org/page/34984997 1872 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 28 1872 Geology Periodicals Smithsonian Libraries bhl page 34984997 dc identifier http //biodiversitylibrary org/page/34984997 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-14 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12512690215 2015-08-27 09 51 54 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1872 Photos uploaded from Flickr by FĂŚ using a script | ||||
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