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| Keywords: The Quarterly journal of the Geological Society of London (12894038054).jpg Vol 53 ASSOCIATED DEPOSITS AT NEWBURY 425 <br> peculiarly ' Glacial ' species 4 The non-occurrence of any <br> fossils in the Southern Drift The colour of the latter is grey <br> and the gravel is invariably bleached in the upper layers ; whereas <br> the Donnington gravel is always of a rich ferruginous brown The <br> matrix of both is a clayey quartzose sand ; though clean patches <br> entirely free from clay are often intercalated in both Drifts <br> The Donnington gravel appears to thin out to the west as the <br> watershed region upon which it lies rises above the level of the <br> gravel Eastwards the carving out of the two valleys at their <br> junction has of course removed it <br> The northern boundary of this gravel is the Lambourne Valley ; <br> the southern is formed by the Kennet Valley and the rising <br> ground limits it westward <br> § 4 The Upper Eiver-gravel or Terrace-gravel <br> Below the level of the ' Glacial Drift ' at Newbury there are <br> fine broad terraces of ' Eiver-gravel ' on both sides of the valley <br> These terraces I have called ' Upper Eiver-gravel' for the purposes <br> of this paper Where the base has been exposed it is seen to rest <br> upon firm green sands which I conjecture are the lowest beds <br> of the Eeading Series from the evidence given by the well at Green- <br> ham Park p 422 The Upper Eiver-gravel is usually about 12 feet <br> thick at the terrace-edges nearest the river In Bull's Lane on <br> the south side of the valley I obtained the following section ” <br> Pig 3 ” Section in the Upper River-gravel at Bull's Lane <br> No 7 in the Map PL XXX <br> 2 feet <br> 3 feet -« ¢ ¢ \ sC ' V - ' ‚¬ ' b l V~ <br> exposed ¢ / - w ž « -V ' – C V – - – j <br> Vertical scale -g- inch 1 foot <br> a Flint-gravel of the same composition as c but coarser Surface unseen <br> b Fine soft mealy quartzose sand with black carbonaceous grains Weathers <br> to a ferruginous yellow This bed thins out at 20 yards in the direction <br> of the arrow <br> c Coarse flint-gravel with large unstained black and white-coated flints <br> 1 green-coated flint and a few red flints No gritstone a few rounded <br> pebbles of quartzite and small flints Composition as follows 80 <br> subangular brown flints 19 °/ rolled black flints and 1 subangular <br> sarsens whose longest diameter is 12 inches The matrix of the gravel <br> is brown clay 36029248 111130 51125 Page 425 Text 53 http //www biodiversitylibrary org/page/36029248 1897 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 53 1897 Geology Periodicals Smithsonian Libraries bhl page 36029248 dc identifier http //biodiversitylibrary org/page/36029248 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-03 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12894038054 2015-08-26 16 58 27 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1897 Photos uploaded from Flickr by Fæ using a script | ||||
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