A. R. Norwood — Upper Trias of Leicestershire. 73 



biit we are quite satisfied from our knowledge of the land surface 

 with the Survey section on which we base these remarks and accept 

 it all as coloured, namely ' Veryan ', up to the Dodman phyllites, 

 recognizing that it would be progressively altered by compression 

 as it was crushed and forced against the Dodman mass. Now it is 

 clear that these Veryan Beds are interrupted here and there by 

 quartzites which contain Ordovician fossils, and it is equally clear 

 from the ground, the mapping, and the section that these quartzites 

 appear at intervals up to the mass called 'The Glitters'. They 

 represent in our judgment the crushed and broken anticlinal folds 

 of a once continuous bed, the synclinals of which are filled with 

 Yeryan Beds more and more altered as we pass south till they are 

 brought up short against the Dodman mass, which may be considered 

 to be of earlier age and part of the old ridge of rocks represented on 

 the west by the Lizard area. 



Having now given our views on this section we may briefly sketch 

 the general structure of the country, using the Survey maps as our 

 illustration. The order of succession of the sedimentary rocks from 

 above downwards is Meadfoot. Falmouth, Porthscatho, Veryan, 

 Quartzites, as stated and defined in Geol. Mags., December, 1912, 

 p. 560. All these beds fan out as we proceed westwards, and the 

 broad edge of the Porthscatho Beds is altered by the granite mass 

 which comes in contact with it into the ' Mylor Beds ' of the 

 Survey. It is clear, therefore, that the ' ^lylor Beds ' have little 

 claim for separate recognition. The beds, originally horizontal, 

 were forced into anticlinals, then into overfolds, and finally crammed 

 and crushed into the endless minor contortions so puzzling in the 

 field. But they have yet retained their original sequence, and, 

 though once present, some Silurian rocks have disappeared in the 

 smash, and fragments of the Ludlow, Wenlock, and "Woolhope Beds 

 still remain as lenticles of fossiliferous limestone in the Lower 

 Devonian beds of Perhaver, Porthluney, Veryan, Porthalla, and 

 Mullion. From all of these places we have no doubt recognizable 

 Silurian fossils will eventually be found to offer further support to 

 these opinions.^ 



V. — The IIppke Tkias of Leicestekshire. 



By A. E. HORWOOD. 



3. Stkatigraphy (continued). 



(WITH A TEXT-MAP.) 



[Continued from p. 32.) 



(2) Measham and Orton District. 



THIS district is bounded on the north by the Coalville and Ashby 

 line, on the west and south by the county boundaries, on the 

 east by the Shackerstone and Market Bosworth lines. In the north 

 are exposures of Coal-measures, Permian breccias, and Bunter, which 

 the Trias in turn rests upon un conform ably. The Lower Keuper 



' [When staying at Mullion, Cornwall, in 1906, Ifound a perfectly recognizable 

 trilobite when going down the path to Pollurian Cove, but its importance 

 escaped me, and I did not preserve it, much to my regret.- — H. WOODWARD.] 



