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| Keywords: The Quarterly journal of the Geological Society of London (13960008333).jpg 10 <br> 3IE H T BEOWX OX THE PEE1IIAX <br> Before describing more minutely the lithological characters of the <br> beds occurring in the three sections just referred to it will be necessary <br> briefly to call attention to the other localities within the area of the <br> Coal-field in which the Permian beds either crop out at the surface <br> or have been penetrated in colliery-sinkings <br> At the Boothorpe Clay Works the Permian rocks with the over- <br> lying Bunter Conglomerate have been thrown out by the Boothorpe <br> Fault on the east side of which we find Coal-measures again <br> brought to the surface for a distance of about half a mile At <br> the Blackfordby Mine we are on the western edge of a large <br> outlier of Xew Red Sandstone which occupies the centre of the <br> coal-field ; and we find exposed in the shaft of the mine a few feet <br> of Permian breccias and marls similar in character to those occur- <br> ring at the Boothorpe Clay Works ; whilst in the Waterworks well <br> about mile N N W thin representatives of the same beds have <br> been found At this point the Bunter Conglomerate which thins <br> out rapidly eastward is only a few feet thick and a little further to the <br> south-east at the village of Blackfordby it has completely died out <br> and we find the Lower Keuper resting directly on the Coal-measures <br> On tracing the margin of the central outlier of Xew Bed Sand- <br> stone from this point nearly to Ashby making frequent use of the <br> boring-rod I have failed to discover any traces of the Permian beds <br> beneath the Lower Keuper <br> Ashby ” At p 60 of the Survey llemoir reference is made to a <br> small exposure of sandstone and marls in the railway-cutting on the <br> west side of Ashby Station Although mapped as Trias the age of <br> these beds was considered doubtful by the geologists of the Survey <br> The slopes of the cutting are now much obscured by vegetation ; but <br> by repeated trial-borings in the banks the beds in question were at <br> last discovered 330 yds west of the railway goods-shed They consist <br> of 2 or 3 feet of sandstone resting on purple marls which in turn <br> are succeeded downwards by Coal-measure clays The sandstone is <br> of a distinctly Lower Keuper type and does not resemble in any of <br> its characteristics the true Permian sandstones of the district The <br> underlying marls which are of a bright purple colour are only <br> about 18 inches thick That they belong to the Permian series is <br> rendered probable both by their colour and by the fact that haematite <br> nodules have been observed in them Such fragments of haematite <br> are of frequent occurrence in the Permians ; but so far as I know <br> they never occur in the Triassic marls of the neighbourhood <br> Packington ” There are at the village of Packington three small <br> exposures of unconsolidated breccia in a red marly matrix One of <br> these is opposite the Bull's Head Inn ; the second by the roadside <br> 160 yds north of this point and the third in a brook-course 160 yds <br> south-east of the inn These are the most easterly exposures of the <br> Permian beds which occur within the area of the Leicestershire <br> The marls and breccias indicated in fig 5 p 35 of the Survey Memoir <br> as occurring at the outcrop of the Ten-foot Coal at Blackfordby doubtless belong <br> to the Permian and not to the Xew Bed as there stated This particular section <br> is however now obliterated 36939799 113696 51125 Page 8 Text 45 http //www biodiversitylibrary org/page/36939799 1889 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 45 1889 Geology Periodicals Smithsonian Libraries bhl page 36939799 dc identifier http //biodiversitylibrary org/page/36939799 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 N02/13960008333 2015-08-26 06 51 48 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1889 Photos uploaded from Flickr by Fæ using a script | ||||
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