PRECAEBONIFEROFS EOCKS OF CHARNWOOD FOREST. 



341 



an agglomerate with slate fragments ; and slate fragments belong in 

 general only to the higher portions of the Charnwood series. We 

 are inclined, therefore, to think them dropped down here by some 

 faulting. A chain of greenstone intrusions (two of which are new 

 discoveries) extends from jS'ew Cliff, over Long Cliff, to the Buck Hills, 

 and may possibly have some relation to the position of the fault, if 

 such exists. 



The annexed section, which is only diagrammatic, may serve to 

 render clearer our idea of the general relation of the beds on either 

 side of the anticlinal at the northern end of the Forest. It is drawn 

 in accordance with Prof. JBonney's view — that the Blackbrook-toll- 

 gate beds are about the lowest of all, and that a fault parallel with 

 the anticlinal fault has a larger throw than it. 



Pig. 1. — Diagrammatic Section (on a line curving to N.) to express 

 the probable relation of the beds in the northern part of Cham- 

 ivood lorest. 



Blackbrook. Moorley. 



I 



a. Sharpley Eock. h. Coarse Agglomerate. c. Fine Volcanic series. 



d. Blackbrook series, slaty in upper part. e. Trias. 



(3) Distinct of Sharpley, Hatchet Hill, and Peldar Tor. 



We gave in Part I.* a general description of these beds, stating 

 that, after careful comparison of the Sharpley rock, that of the base- 

 ment beds of Eatchet Hill, and the rock of Peldar Tor, we consider 

 them the equivalents one of another. We have subsequently ex- 

 amined more minutely the whole district, with the following results : — 

 In the first place, we have detected the characteristic rock which 

 forms the ridges of High Sharpley, at the base of Peldar Tor itself 

 (near to Spring-Hill Farm), in two little spinneys to the north of this, 

 and near another farm in the direction of Kite Hill. We have also 

 traced this rock to the north of High Sharpley, and found that at last 

 it is either split up by small slaty bands, or contains lenticular 

 fragments of slate, and passes at one place into a purplish agglo- 

 meratet. There is then a very considerable mass of rock of the type 

 found at High Sharpley, and it clearly underlies the beds visible in 

 the main part of Ratchet Hill aud Peldar Tor ; further, among the 

 lowest beds of the former, together with a green rock, like that of 

 Bardon Hill, is some of the Sharpley type. Microscopic examination 

 also showed that the difference between these two rocks was more 

 apparent than real. 



It results, then, that the Ptatchet-Hill and Peldar-Tor rocks are 



* Quart. Journ. Geol. Soc. vol. xxxiii. p. 777. 

 t On the map, just under the e in " Swanymote." 



