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| Keywords: The Quarterly journal of the Geological Society of London (12961530314).jpg 98 <br> PKOCEEDINGS OF THE GEOLOGICAL SOCIETY <br> the current was reduced the finer materials might be deposited <br> There is no evidence of any change of level during these deposits ; <br> and the river must have risen 50 feet at least in times of flood <br> Fig 33 ” Sect on on Brading Down Isle of Wight showing blocks of <br> Chalk in Gravel <br> In conclusion I may mention that the beds described above as <br> pluvial have been referred to by Mr Godwin-Austen under the <br> name of Head or Subaerial beds ; and I quite admit the propriety <br> and importance of his terms in many respects ; but I was obliged to <br> use the term pluvial in order specially to introduce the notion of <br> rain-water action as I was treating of deposits made on slopes by <br> the action of water probably by a non- continuous action and thus <br> necessarily to be separated from the ordinary aqueous action such as is <br> performed by rivers lakes and seas ; as well as from ordinary sub- <br> aerial action While the pluvial beds as I have shown in my sections <br> pass down into the aqueous beds they pass upward into Mr Godwin- <br> Austen's subaerial beds and the stones which have been head at one <br> time and weathered by subaerial action pass down into what may <br> be termed pluvial beds which in their turn are being constantly <br> despoiled and carried into the purely aqueous beds at lower levels <br> Although Mr Godwin-Austen's term subaerial is an excellent one <br> I submit that it does not suificiently define the kind of action for <br> the purpose I have in view and still less so for the paper I have <br> prepared on the formation of valleys and the denudation of the <br> surface <br> When the Crayford and Erith beds have been as fully examined as <br> those at Grays the numerical superiority of the MoUusca in the latter <br> deposit as shown in the following Table will probably disappear <br> The list of shells from Salisbury is principally on Dr Blackmore's <br> authority The Grays list is compiled from Mr Pickering's table <br> the Ilford one partly from Mr Morris's ; the remainder by Mr A <br> Bell who has revised the list and omitted the doubtful species 36102943 111288 51125 Page 98 Text v 25 http //www biodiversitylibrary org/page/36102943 1869 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 25 1869 Geology Periodicals Smithsonian Libraries bhl page 36102943 dc identifier http //biodiversitylibrary org/page/36102943 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-06 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12961530314 2015-08-26 15 51 04 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1869 Photos uploaded from Flickr by Fæ using a script | ||||
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