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| Keywords: The Quarterly journal of the Geological Society of London (12684339895).jpg 1852 STRICKLAND � UPPER LUDLOW ROCK AT HAGLEY PARK 385 <br> m <br> s <br> £ <br> tCcf <br> I <br> a mile and a half further to the S E we come to the elevated region <br> of Woolhope the axis of which runs for more than ten miles still in <br> a S E direction It appears therefore that the ejection of the trap- <br> dyke at Bartestree together with this protrusion of Silurian rocks at <br> Hagley Park occur exactly on the axial line of the great eleyation of <br> Woolhope <br> But though this coincidence of position deserves notice yet the <br> forces which have caused these minor protru- <br> sions have in fact acted nearly at right angles <br> to the direction indicated The Woolhope <br> region though possessing an axis from N W <br> to S E is essentially an area and not a line <br> of elevation Its pressures have been distri- <br> buted not in two opposite directions from an <br> axis but in every direction from a centre In <br> conformity with this view we find that in its <br> north-western portion it is cut through by the <br> great Mordiford fault running N E by E <br> or nearly at right angles to the major axis <br> and causing the strata about Dormington and <br> Stoke Edith to assume the same strike Be- <br> yond the Woolhope area we find the valley of <br> the River Frome the Bartestree Dyke and <br> the protruded Silurian mass of Shucknall Hill <br> assuming almost exactly the same east-north- <br> easterly direction And in the small dome- <br> like protrusion of Hagley Park which lies <br> parallel to Bartestree Dyke and precisely in <br> the axis of Shucknall Hill we find a further <br> proof of the same movement <br> It appears probable then that the pressure <br> caused by the elevation of the central dome <br> of the Woolhope area acting in every direc- <br> tion has on the north-west side caused great <br> undulations in the Silurian and Devonian strata <br> which lie beyond the region of actual elevation <br> In two instances that of Shucknall Hill and <br> of Hagley Park the denudation of the Old <br> Red Sandstone has exposed to view the sub- <br> jacent Silurian rocks on the summits of these <br> undulations Great shattering and disloca- <br> tion would of course accompany these move- <br> ments and in the Bartestree Dyke it is inter- <br> esting to find one of the great crevices thus <br> formed and filled with eruptive matter derived <br> from the Plutonic region where all these great <br> movements originated <br> The accompanying section will serve to show <br> the relations in which the Hagley protrusion <br> stands to the Bartestree dyke and the Wool- <br> hope elevation 35461453 109911 51125 Page 385 Text v 8 http //www biodiversitylibrary org/page/35461453 1852 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461453 dc identifier http //biodiversitylibrary org/page/35461453 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 N02/12684339895 2015-08-27 12 56 02 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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