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| Keywords: The Quarterly journal of the Geological Society of London (12684388963).jpg 1852 <br> PRESTWICH ON THE THANET SANDS <br> 251 <br> Fig 5 � Section of the Sand-pit hy the side of the Railway at <br> Richborough Castle near Sandwich <br> SI <br> 09 S <br> rcJ O <br> Feet <br> 1 Light brownish-yellow clayey sand with a few very scarce and not <br> determinable bivalve shells 3 <br> 2 Very sandy light brownish-grey clay full of small rough twig- <br> like fragments or pieces of iron sandstone with cores of yellow <br> sand and having the appearance of vegetable origin � contains <br> a very few and very small black flint-pebbles 2 <br> Very light and loose ash-green sand rather fine � in some places <br> coarser with one thin seam of shells Corbula Glycimeris <br> and Cyprind The lower part contains an occasionally ochreous <br> layer A few small round flint-pebbles are dispersed throughout <br> The lower part of this stratum has taken up part of the under- <br> lying bed and the line of separation is therefore not very sharply <br> marked 8 <br> Rather bright ochreous clayey sand passing down into alight brown- <br> ish yellow colour in some parts with seams of sandy clay Casts of <br> shells are common in this bed but more particularly in the lower <br> and more argillaceous part of it 7 <br> Light yellow loamy sand with shells in irregular layers and patches <br> on the left hand of section They are very abundant � in some <br> places in fragments in other places whole and perfect but ex- <br> tremely friable 4 <br> Beyond this a bed of hard semi-indurated sand 3 feet thick with a few shells <br> rises Argillaceous beds not well exhibited succeed <br> The surface on the top of this section consists of about 1 foot of earth with a <br> few pebbles chiefly the rounded ones The hill rises at the back about 10 feet <br> higher but no section is exposed Small round flint-pebbles are numerous on the <br> surface of the hill <br> 4 Conclusion <br> From the facts brought forward in the preceding pages but which <br> with regard to the middle division of the Lower London Tertiaries <br> will be described more in full hereafter it appears that while this <br> latter group exhibits on the same horizon a fauna at one place <br> marine at another sestuarine and at last passing into one chiefly <br> fluviatile the Thanet Sands maintain within the same area a uniform <br> marine character In its range westward the fossils are certainly few <br> but still the occurrence of the Pholadomya which is never found in <br> the Woolwich clays and conglomerates or in the sands interstratiiied <br> with the mottled clays but is as before mentioned met with in the <br> sands beneath the shelly fluviatile beds at Woolwich and Charlton <br> afl'ords an unmistakeable proof of the different conditions under which <br> the two divisions were formed Taking therefore these facts in <br> conjunction with the persistent lithological character of the lower 35461299 109911 51125 Page 251 Text v 8 http //www biodiversitylibrary org/page/35461299 1852 Geological Society of London NameFound Corbula NameConfirmed Corbula EOLID 56976 NameBankID 2693839 NameFound Glycimeris NameConfirmed Glycimeris EOLID 4728187 NameBankID 4178508 NameFound Pholadomya NameConfirmed Pholadomya EOLID 4744545 NameBankID 4294325 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461299 dc identifier http //biodiversitylibrary org/page/35461299 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12684388963 2015-08-27 12 56 16 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1852 Photos uploaded from Flickr by Fæ using a script | ||||
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