Vol. S i.] 



SECTIONS IN THE MALVERN HILLS. 



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a quartz-schist slightly foliated by chloritic films ; it seems to contain 

 too much quartz to be an igneous rock. The dip along the section 

 in the figure is due east ; in the quarry last mentioned it is north-east. 



The rocks of this group differ in 

 several respects from those of the 

 "Warren House area. They are more 

 basic in composition ; out of twelve 

 examined only two can be called 

 felsites ; and they have been subjected 

 to very considerable mechanical de- 

 formation. No signs of crushing or 

 shearing, and no strain-shadows, occur 

 in the Warren House rocks ; in all 

 but one of the rocks of Eaggedstone 

 Hill these are palpably apparent. 



I am unable to say whether these 

 rocks are among those dealt with by 

 Dr. Callaway in his last paper on the 

 ' Origin of the Crystalline Schists of 

 the Malvern Hills,' J because I cannot 

 identify his localities with any cer- 

 tainty. But though the rocks I have 

 been speaking of may well be on the 

 road to become schists, they are all 

 of them very far from having arrived 

 at that consummation. 



Relation to the Crystalline 

 Schists. 



Unfortunately, neither in theWarren 

 House area nor on Eaggedstone Hill 

 have we anywhere a junction or any- 

 thing like a junction shown between 

 the special rocks of these districts I fcq 



and the schists that make up the 

 main mass of the hills. 



Several hypotheses present them- 

 selves as to the relationship between 

 the two. The Warren House rocks 

 may be totally distinct from the 

 schists. If this be so, the absence of 

 mechanical deformation in them 

 would indicate that they are the 

 younger. If we accept the view 

 that the schists of the Malverns have 

 been formed by dynamic metamorph- 



ism out of volcanic rocks, the rocks of Eaggedstone Hill may be 

 a portion of this volcanic complex which has undergone only partial 

 transformation. And there is again the possibility that the Warren 



1 Quart. Journ. Geol. Soc. vol. xlix. (1893) pp. 401 et seqq. 



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