MAKE A MEME View Large Image The Quarterly journal of the Geological Society of London (12961165723).jpg TYLOR QUATERNARY GRAVELS <br> 67 <br> Junction ; the river under the viaduct is 325 feet above the mean <br> level of the tide at Liverpool The rails of the ...
View Original:The_Quarterly_journal_of_the_Geological_Society_of_London_(12961165723).jpg (1185x2056)
Download: Original    Medium    Small Thumb
Courtesy of:commons.wikimedia.org More Like This
Keywords: The Quarterly journal of the Geological Society of London (12961165723).jpg TYLOR QUATERNARY GRAVELS <br> 67 <br> Junction ; the river under the viaduct is 325 feet above the mean <br> level of the tide at Liverpool The rails of the Taif-Yale line are <br> 96 feet above the Taff at Quaker's- Yard Junction and 30 feet at <br> Aberdare Junction so that the rails are laid on a very steep <br> incline of 1 in 50 On the average between B and C the fall of the <br> rail is 154 feet and that of the river about 88 feet between the <br> two stations The rails cross the river on a viaduct about 96 feet <br> high near the upper end of the incline and on a bridge 30 feet high <br> at the bottom of the incline <br> Fig 3 ” Map of part of the course of the river Taff Glamorganshire <br> l\ \ -W <br> ft <br> Bed of river Taff near Merthyr Station 4930 A <br> Bed of river at Quaker's-Yard Viaduct 297 50 B <br> Bed of river near foot of incline at Aberdare Junction 230'0 C <br> Bed of river near junction of river Clydach 199-50 D <br> Junction of river Rliondda at Pontypridd Junction 144 0 E <br> Bed of river Taff at Taff's Well betvreen Llantrissant <br> and Walnut-tree Junction 63 0 F <br> Bed of river Taff at Pentyrch Bridge between Walnut- <br> tree and Pen arth Junctions 490 Gr <br> Bed of river Taff at Melengriffith between Penarth Junc- <br> tion and Llandaff Station 240 H <br> The section given in PI lY fig 1 commences at Quaker's-Yard <br> Junction with a bed of loose gravel lying along the sides of the valley <br> 140 feet high above the river but probably not of greater thickness <br> than 40 or 50 feet on any part of the rock out of which the sloping- <br> sides of the valley are excavated The gravel is full of very large <br> boulders of the local Carboniferous rock which is an extremely hard <br> compact massive -bedded sandstone of the Pennant series several <br> hundred feet thick These boulders are sometimes angular and <br> sometimes weathered or rolled There also occur quantities of Mill- <br> stone-grit brought ten miles down the valley of the Taff these being <br> always rolled and boulders of limestone with a small but conspicuous <br> percentage of well-rolled pebbles of Old Eed Sandstone from the <br> Brecon Beacons and other distant hiUs These red pebbles are still <br> more worn and rolled than those of the Limestone and Millstone- <br> grit the source of which is nearer to Quaker's Yard than the Old <br> Red Sandstone The matrix is clay and sand derived from the Coal- <br> measures or from decomposed Millstone -grit <br> After passing the daduct PL lY fig 1 the section is continued <br> 1-2 36102912 111288 51125 Page 67 Text v 25 http //www biodiversitylibrary org/page/36102912 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 36102912 dc identifier http //biodiversitylibrary org/page/36102912 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 N02/12961165723 2015-08-26 15 52 05 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
Terms of Use   Search of the Day