PRECARBONIFEROTTS ROCKS OF CHARNWOOD FOREST. 775 



of some constituent. About 200 yards north is a pale ashy slate 

 with like cavities, and patches of coarse grit. 



On the opposite slope of the valley are the rocks seen round 

 Lubcloud. Those on Lubcloud Hill are rather schistose. They 

 seem a greyish slate with quartz granules, but are much obscured 

 with veins, and with red stains along the planes of cleavage. The 

 rock north of the farm-house, between it and Ives Head, is a similar 

 one, but in a better condition. It is a greenish or greyish ashy 

 slate with minute lines of stripe, and like that just described by 

 Charley church. 



The outcrops on Ives Head consist of a series of banded grits. 

 The highest bed is a thick, rather schistose mass containing quartz 

 granules and felspar crystals and cavities. It is much stained with 

 red, as are all the rocks in this neighbourhood. Professor Jukes 

 considers this due to the oxidation of iron in the rocks along joints ; 

 but may it not be owing to infiltration of waters from the Trias ? 



14. Taking a section parallel to the last, and one much the same 

 as that drawn on the Survey map, if we go far enough N.W. to clear 

 the quarry of indurated slate, the first rocks we meet are a mass of 

 greenish white ash, containing white decomposed crystals of felspar, 

 quartz grains, and small fragments of slate and other rocks. The 

 dip is about 15° in a W.S.W direction, which can be established both 

 by apparent dip-faces and by a large bed of breccia on its upper 

 portion, whose general direction and thickness can be made out. 

 The fragments are very numerous and large, some being 9 inches or 

 a foot long. They consist mainly of two rocks : — one a very charac- 

 teristic specimen of the dark purple porphyritic kind already men- 

 tioned ; the other a compact, hard, rather fine-grained porcellanized 

 rock, sometimes rather resembling the last without its crystals. 



It is not easy to say whether the indurated slates pass over or 

 under these rocks. The latter seems more probable ; for the line of 

 strike of this breccia passes so close under the rocks at the east 

 corner of Peldar Tor that there seems no interval for any overlying 

 beds. Yet below this breccia we find the rocks of Tin Meadow, 

 next to be described, within so short a distance, that the space seems 

 insufficient for the indurated slates to lie between. We cannot 

 explain this difficulty satisfactorily. 



A ridge of rocks in a plantation towards Tin Meadow consists 

 entirely of greenish ashes with decayed white crystals, intercalated 

 with breccias, containing fragments up to a couple of feet across. 

 Some of these are the compact rock just described ; but most are 

 of the purple porphyritic kind. We noticed no slate. There is no 

 distinct evidence as to the direction of the dip. 



Between this and the knoll (Kite Hill), now crowned by the 

 monastery and its beautiful grounds, is a considerable breadth in 

 which are no outcrops. There they are abundant, but hard to 

 unravel ; and we do not profess to have cleared up the difficulties. 

 At the north end, outside the grounds, a small quarry has been 

 opened, where there are indications of a steep dip to E.S.E. The 

 material is a very variable dark green, rather schistose ash, with 



3e2 



