SHARPE ON NORTH WALES. 



315 



Table showing the position of the Plane of Cleavage as compared with the position of the Plane of Bedding in different 



parts of North Wales. 



Point 





Angle 

 between 

 pjar 

 cleavage 

 and bed- 

 ding. 



West of Snow- 

 don Anticlinal 



East side 

 Snowdon An 

 ticlinal 



of-l 

 An- I 



East side of Car- , 

 narvonshire - 

 Synclinal . 



EastoftheBryn- 

 y-ddinas fault, 

 Holyhead 

 road 



Ditto 



Northern extre-' 

 mity of the 

 county of Car- 

 narvon 



South-west part 

 of Carnarvon- 

 shire 



Menai Straits.... 



Bala trough .... 



Bron-llv\7d 



Penhryn quarry, west side ... 



Ditto, east side 



West of Bethesda 



Coet-mor and Tan-y-bwlch ... 

 Pont-y-Coetmor and Bryn .... 

 Dinorwig quarries, Llanberris , 

 Glyn quairies, ditto .... 



Bettws Garraon 



Llanllyfni 



Ditto 



Ditto 



Ditto 



Metamorphic roclcs . 

 Lower Silurian slate . 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Ditto 



Sundi-y localities 



South-east side of Craig-llyn- "I 

 Hagi / 



Near Bryn gelynen 



Ditto 



Ditto 



Rhiw Brefder quarries, Mr.Hol- \ 

 land's / 



Diffw7s quan-ies 



Manod-mawr quanies 



North of Tremadoc 



Lower Silurian 



Dark Lower Silurian slate , 

 Lower Silurian slaty flagstone . . . 

 Hard slaty flagstone 



Lower Silurian slate 



Ditto 



Inferior slate at the base of the ] 



Lower Silurian rocks J 



Light grey Lovper Silurian flag- 1 



stone 



Between the 4 7th and the 48th ") 

 milestones J 



Bala grits. Lower Silurian 

 Ditto 



E 45 N 

 e45 N 

 e45n 



E 45 N 



e45 N 



e45n 



EO»N 



e45n 

 E 45 N 

 e45 N 

 e45 N 

 e45 N 

 e45n 



e45n 



e68n 

 e 45 N 



e45 N 

 e45n 

 e45 N 

 e45 N 



e45n 



e45 N 

 e45 N 



South of Bala 

 Lake 



Porth-felin, south of Aberdaron 



North of Pwllheli, 3| miles 



Porth Treueddyn, near Tremadoc 



North of Carnarvon 



Two miles east of Bala 



Between Dinas Mawddy and \ 



Mallwyd J 



Taihirion, west of Arenig fawr ... 



East flanlt of Arenig fawr 



Nine miles south of Bala, on \ 



the Twrch River f 



Schist , 



Dark fossiliferous inferior slate. 



Ludlow shale 



Good slate, Lower Silurian 



Good slate, ditto , 



Inferior slate 



Roofing slate 



Lower Silurian slaty grit .,, 



b45n 

 e45 N 

 e46n 

 e 45 N 

 e45 N 

 e45n 

 e68 s 

 e45 N 

 e45 N 

 e45n 

 e45 N 

 e 45 N 

 e45n 



E 45 N 



e45 N 

 e45n 



E 45 N 



e45 N 



e45 N 

 e45n 

 n68w 



e22s 

 e22n 



e45n 

 e68n 



N 45 w 

 s45e 

 s45e 

 s 45 E 

 s 45 E 

 s45e 

 s68e 

 vertical 

 N 45 w 

 N 45 w 

 N 45 w 

 s45 E 

 s45e 



n45w 



n45w 

 N 45 w 



n45w 

 i45E 



N 45 w 

 N 45 w 



s45e 

 w 



n22e 



s 

 n68w 

 vertical 

 f45E 



i68w 



80 

 80 to 85 

 80 to 85 

 80 to 85 

 80 to 85 

 80 to 



70 



90 



85 



45 

 65 

 45 

 35 



50 

 50 

 50 



variable 



50 

 70 

 30 

 70 

 65 



s4°5 

 s45 E 

 N 45 w 

 s45e 

 s45e 

 s45e 

 s68w 

 s 45 E 

 s45e 

 N 45 w 

 s45 

 n45 

 s45 



s45e 



N 45 w 

 n45 

 N 45 w 

 N 45 w 

 n45 

 N 45 w 



n22e 

 n22w 



45 E 

 n68w 



s45 E 

 n45e 



n45e 



35 to 40 

 55 to 50 

 to 35 

 30 to 35 

 50 to 55 



55 to 85 

 20 



