536 PROF. E.J. GARWOOD OX THE LOWER CARBONIFEROUS [DeC I912, 



thus cutting out the whole of the grit-and-sandstone series and 

 the NematophyUuni-minus Band which are exposed below in Swin- 

 dale Beck. This unmapped fault is, indeed, of much greater import- 

 ance than that which runs along the upper part of 8wiudale Beck, 



marked on the Geological 

 Fig. 3. — Geological map, on the scale of 

 1 inch to the mile, or 1 : 63,360. 



Harnxmy FelZ AT*Gay 



Pr^^^ 



Survey map. It appears to 

 be the southerly continua- 

 tion of the inner Pennine 

 Fault, which is seen cross- 

 ing Scordale Beck imme- 

 diately north-north-west 

 of the summit of Eoman 

 Fell. From here it curves 

 round under the scree- 

 covered northern slope of 

 Eoman Fell to the col 

 already mentioned. The 

 Roman - Fell Beds are 

 therefore entirely cut off 

 by this fault from the 

 Carboniferous succession 

 on the east and south. 

 (See fig. 3.) 



The beds, again, on the 

 two sides of the fault 

 are totally different ; for, 

 Avhereas the pebbles in the 

 lloman-Fell Conglomerate 

 are largely composed of 

 Lower Palaeozoic rocks, 

 those in the Carboniferous 

 pebble-beds on the east are 

 almost entirely composed 

 of quartz. Again, the ma- 

 trix in the Carboniferous 



.= Potholes. The suggested fault (broken pebble-beds is marked by 



Ime) has been erroneously shown west n i i j ^^^■ 



of the potholes, histead ot east of them. ^^^^ " developed OolitiC 



NM = Nemcctophylhim-mimis Sub-zone • 



Th r= Tlnjmnophyllum Band ; S & Sy = 



Brownber Pebble-Bed with Syringothyris; 



B = Bryozoa Band ; LF =; Lonsdalia- 



floriformis and Nodular Girvanella Band ; 



D^ = Lower J)ilmno])liyllum Sub-zone. 



The thick black bands indicate the 



course of the Whin Sill. The heavily 



dotted area represents the Bonian-Fefl 



Conglomerate; tbe lightly doited areas ""^ '"""^ ^^.^^^^^^. ^"o"^"^ 



represent the fossiliferous grits and OohtiC pebble series (S & 



pebble-beds.] Sy, fig. 3) on the east, no 



fossils beyond those con- 

 tained in the pebbles derived from Lower Palaeozoic rocks have 

 ever been met with in the conglomerate of Koman Fell. 



[go I 



structure ; while no such 

 structure is met with in 

 that of the lioman-Fell 

 Beds. 



Lastly, whereas Carbo- 

 niferous fossils, including 

 Syringothyris cus2nda ta 

 are not uncommon in the 



