DIAGRAM ILLUSTRATING THE THICKNESSES AND NEARLY CONTINUOUS SEQUENCE OF THE PAL.^OZQiC ROCKS OF IRELAND 



Proc. R.D.S. Vol. III. N.S. 



Plate VH. 



PALi^OZOI G 



CARBON i FERO U S 14,000 FEET 



Lmvej' Carhcnifefoiis 



fliOOCfeel] 

 ThmcT S\djik-*lww^ ^hrdonifer{}iisZmi£s/Mn/'.&S}uU^y( Old RAd S'aruisiorte 



^' iDoo-ii) :mm rs.oooft) (e.ooon 



JJmo'orGialJfeamreji x 



SILURIAN 



Passage beds /rem, SUtiri/i/v to Carbonjferous 

 do, 000 Feel) 

 Dwjale-beds tvilh- /,an/I plants 



17000 FEET 



X 6'diaucns mlh Marim fossi/s 

 f 7,000 feelj 



Limestone liest developed in Noi'tli Munster; 

 Calp Sandstone in Ulster; Limestones scarcely 

 represenled in West Cork, where grits and 

 shales predominate. 



Bright rod, green, and yellow grits, sandstones 

 conglomerates, slates and shales, 



Best developed in Cork. (RlenarifT grits) and Kerry ;(DinEle beds;) also reprcsDnted at 

 Louisbui'g, Co. Mayo, Croaghnioyle ? do., Curlew Mountains, and Hntona Mountains. 



Dingle, N.W. Galwoy, DallaRhadoieun (Curlow Mt.), S.W. Miiyo, 

 and Ii'intoua } 



CAMBRO SILURIAN, 10,000 FEET 



/Iffper Series '^ 'll'dy'llTl^L ^ B/afAi'^/ialeSerus 



(mVllest-J 



Sm%fmiO'n. 



■ 6.000 Tee/ J 



Uppa^ f 5,000 feel] 



C A IVI B R 



A N 



8,000 



FEET 



Lower'M:OOl)-feMj 



<Jrefus QroTip ? f,\SOO feel.) > 





2. 



P t'7 



Si K £ ir j; X e. -STi! r 

 ° ,a •* § '^ ^ •"" i" 



xjis^;: its ._-^cf! ol [- s 



K.K. Munster, in the .Slicve 

 I'heliiu, Slicve .\rra. Slie\e 

 BernaKh„SlievcMui'k,t;aUcc 

 und Ccnun'ivRh Momituiu^: 

 ill Wexfovd ('0Hiit..v,l>ii\\ cm 

 Kihiiiehael on the \.l'.., nntl 

 llliu-kstuir Mouutiiiiis to the 

 S. \V. 



Typical Section 



in South Leinster, 



Counties Wexford 



and Wicklow. 



P.-uisnge beds between Canibro- 

 Silurians and Cambrians, are 

 known to exist in W. Galway, 

 while they prohaWy occur in 

 the hills to the northward of 

 I'omeidv. Co. Tyrone, and from 

 that westward into the Co. Do- 

 negal; also in the Ox mountains 

 rauue Counties Mayo and SUgo. 



W. Galw»y «nd Donegal. (?) 



1 n,roB«w;\-rThp Rock^ In F.rrld, Co. Mayo, here claji.icd 

 Dublin. Wicklow, Wexford,Ems,Co. Mayo, and DcncKaUOU"^ |^^ „osltlvel.- stated lb, that thoy are 

 a« Cambrians, may possibly be »''<"■. (l^i"?"*""'^', ,{„ck<. are of Laurentlan age, It l« probable that 

 older than the associated Cambro-Silunaw. "*^,*;"" '"'^^^ the I'.ocks of Carn.orc, S.E. Wexford, 

 some of the fiocks in Donegal are ftteo <^ ft similar ufec, as aiao uib j.uv. 



ScaU Jr.'i'ioJ"! to ini Inch. 



• i. C'l."'// i,0/> 



