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| Keywords: The Quarterly journal of the Geological Society of London (13958352303).jpg 1865 <br> FISHER CHILLESFORD REDS <br> 21 <br> l b <br> i <br> CD <br> gathered; but not being satisfied with my <br> proofs I determined to make a careful section <br> from Orford to the Thorpe pit and at my <br> second visit walked over the ground for this <br> purpose <br> To some extent the section will explain <br> itself but I desire to advert to a few parti- <br> culars of it <br> The chief difficulty in the geology of this <br> neighbourhood arises from the repeated ero- <br> sions which the surface has undergone the <br> newer beds being thrown down upon the eroded <br> surfaces of the older <br> One consequence of this is that we ordinarily <br> find the succession incomplete Another is <br> that any given deposit does not continue of a <br> uniform thickness but while its upper surface <br> where it has escaped erosion is nearly hori- <br> zontal the lower follows the contour of the <br> surfaces of the rocks on which it rests s o <br> Another difficulty arises from the sandy beds q <br> of the district being so similar to one another ' <br> that it is difficult to distinguish them by their <br> lithological features <br> As far as my notice extended I did not see <br> any indication of faulting and the dip of the <br> beds appeared very regular being very slightly <br> towards the north <br> The section commences at the Orford wind- <br> mill which is marked on the Ordnance Map <br> as being 54 feet above the sea-level Here <br> the beds are capped by a drift gravel 7 feet <br> thick It contains large flints and quartz – <br> boulders eight or ten pounds in weight It <br> rests on the Chillesford Clay <br> The clay or loam is seen in a small pit ' <br> beyond Queen Esther Grove It is exposed W <br> for 10 feet and rests on reddish-yeUow sheUy p i <br> sand At the interval of one field the sheUy <br> sand is seen beneath the hedge A quarter <br> of a mile further on at Sudbourn Church <br> Walks is a shallow pit in brown micaceous <br> loam The shelly sand always more or less <br> noticeable below the ChiUesford loam is well <br> exposed in the bottom of this pit A small <br> excavation which I made disclosed the Mya- <br> bed in great perfection It was about 2 feet <br> thick with three or four tiers of the united bi- <br> valves They lay so close together that it was <br> impossible to remove one without breaking <br> CD i-K <br> p <br> a <br> o <br> <br> go <br> B <br> CD tS <br> W 3- <br> CD ˘ <br> Sudboura <br> Church <br> i Walks <br> IL- SuJbourn <br> Marsh <br> TJiver Aide <br> Aldborough <br> town brick- <br> field <br> 5q <br> o <br> f <br> O <br> 4 <br> Aldborough <br> ' old brick- <br> kiln <br> Ttorpe <br> ahell-pit 36164418 111477 51125 Page 21 Text v 22 http //www biodiversitylibrary org/page/36164418 1866 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 22 1866 Geology Periodicals Smithsonian Libraries bhl page 36164418 dc identifier http //biodiversitylibrary org/page/36164418 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13958352303 2015-08-26 06 55 17 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1866 Photos uploaded from Flickr by Fæ using a script | ||||
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