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| Keywords: The Quarterly journal of the Geological Society of London (12711740803).jpg 484 <br> PROCEEDINGS OF THE GEOLOGICAL SOCIETY May 2 <br> of one mile and a half from the valley of the Coin At or near its <br> entrance the base of the Great Oolite a resting on the Fuller's <br> Earth b nearly reaches the bed of the brook As we ascend towards <br> Fig <br> 4 ” Chedworth Valley <br> Section at the entrance <br> / Y <br> T~ <br> ZT <br> / « <br> /I J <br> o <br> Level of Brook <br> the village lower beds successively arrive at the' surface ; until after <br> passing over about 30 feet of Fuller's Earth we reach the Inferior <br> Oolite c At the village about 50 feet of this formation compose <br> Fig 5 ” Chedworth Valley <br> Section through the centre <br> a Great Oolite <br> Level of Brook <br> b Fuller's Earth <br> c Inferior Oolite <br> the banks of the brook ; whence continuing our course we meet with <br> higher beds until at the top of the gorge we again reach the Great <br> Oolite It is therefore evident that in the centre there exists a <br> dome-shaped structure of the strata ; the brook forming a datum- <br> line slightly inclined <br> Valleys in lines of dislocation ” A third class of valleys are those <br> which have originated in or the directions of which have been locally <br> marked out by lines of fault In this place it would be superfluous <br> to describe the manner of the formation of such valleys It will be <br> sufficient to enumerate several localities where they occur They <br> are as follows ” Cranham west of Painswick Hill ; Painswick Slade <br> Cubberley Winston Wood Eyeford Hawling Lodge near Naunton <br> and Burford When no valley occurs along a line of fault a feature <br> is generally present formed of a ridge of the harder beds along the <br> upcast side <br> There is a fourth kind of valley represented by a few narrow <br> ravines especially in the districts occupied by the Great Oolite the <br> origin of which cannot be referred to any of the above causes Some <br> of these contain brooks which are dry throughout the greater part <br> of the year and are too insignificant to be supposed capable of having <br> excavated any portions of the gorges through which they run The <br> formation of these and indeed all the valleys of the Cotteswold Hills <br> must be considered as entirely due to marine agency acting at several <br> successive periods ; the most ancient dating perhaps as far back as <br> the period of the upheaval of the Chalk when about to form basins 35615086 110213 51125 Page 484 Text v 11 http //www biodiversitylibrary org/page/35615086 1855 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 11 1855 Geology Periodicals Smithsonian Libraries bhl page 35615086 dc identifier http //biodiversitylibrary org/page/35615086 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-23 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12711740803 2015-08-26 20 53 36 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1855 Photos uploaded from Flickr by Fæ using a script | ||||
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