THE KNOLL REGION OF CLITHEROE, BOWLAND AND CRAVEN

Abstract

(Read June 24th, 1915). Part of this region, to wit, Slaidburn in Bowland, was the venue of the Yorkshire Geological Society) in Easter, 1915, and, by the kind invitation of the President and the courtesy of the Society, I was fortunate to participate in the visit. This excursion was directed by the President, Mr. R. H. Tiddeman, with the purpose of examining the Carboniferous Rocks which he had surveyed some forty years previously. The result went to confirm the impression that I had obtained, on former visits to other parts of the Knoll Region, that geologists were insufficiently acquainted with the information that had already been acquired, both with regard to the sequence and correlation of the rocks, and with regard to the important and broad conclusions which had been deduced from the mapping. I need, therefore, scarcely apologise for the publication of this brief summary which in so far as it concerns Mr. Tiddeman’s work, has been mainly extracted from the Report of the International Geological Congress of 1888 (London), pp. 313–323*. I have also availed myself of the information contained in sheet 92 S.W. (Clitheroe) 1873, and in the Geological Survey Memoir which deals with the Burnley Coal Field, 1875. Commencing with the SEQUENCE of Carboniferous Rocks in the Knoll Region, we may make our remarks under the three main heads:— (1) The lithological sequence of Tiddeman. (2) Its correlation with the Avonian Time-scale of Yaughan. (3) The Pendleside of Hind and Howe. (1) The Lithological Sequence ...