RECENT DISCOVERIES 



IN THE 



GEOLOGY OF THE MALVERN HILLS, 



BY 



C. CALLAWAY, D. Sc, F.G.S. 

 (Read April i8th, 1898) 



The crystalline rocks forming the chief mass of the 

 Malvern Hills have received considerable attention from 

 geologists. The following are the most important con- 

 clusions at which they have arrived. 



Prof. John Phillips * regarded the crystalline schists as 

 altered sediments of Pre-cambrian date, and the massive 

 rocks, granites and diorites, as eruptive and posterior. 

 He says distinctly of the schists, that "they were strati- 

 " fied, the traces of stratification remain." 



Dr. Holl t pushed the views of metamorphism then 

 current even further than Phillips, and assigned a meta- 

 morphic origin to some of the diorites. He referred 

 these so-called metamorphic rocks to the " Laurentian " 

 system. He described the mass forming the eastern 

 spurs of the Herefordshire Beacon as being composed of 

 " baked rocks," probably of Cambrian age, the alteration 

 being regarded as due to the intrusion of trap dykes. 



* Geol. Survey ot Gt. Britain, vol. II., part i, pp. 38-65, 

 t Q.uart. Journ., Gcol. Soc, Feb.. 1865. p. 72. 



