Vol. 58.] THE FOSSILIFEROUS SILURIAN BEDS OF KERRY. 247 
to the north it is much finer-grained and more compact. The 
northern, as well as the southern, boundary ot the porphyrite is 
faulted. 
C19). North of the fault just mentioned, the coast is occupied 
by a series of dull pink and green slates and fissile sandstones, which 
form the next point and the head of the inlet of Coosglass. They 
dip generally at 50° to 60° south 45° east, and have yielded 
Lindstremia subduplicata (2?) M‘Coy. Encrinurus sp. 
Rhynchospira Baylei, Dav. Phacops (1) caudatus, Brinn. 
C (20). At the head of Coosglass the beds just described rest on 
a coarse conglomerate, which we follow the officers of the Geological 
Survey in regarding as the boundary between the undoubted Silurian 
and the Smerwick Beds. The pebbles of this conglomerate, which 
sometimes reach a length of 18 to 20 inches, consist chiefly of a 
fine-grained, micaceous, fissile sandstone, but there are also pebbles 
of jasper, quartz-porphyry, and rhyolite of two varieties. 
‘These beds rest with perfect conformity on the Smerwick Beds. 
(d) The Western Side of Smerwick Harbour. 
The Silurians of the Ferriter’s Cove neighbourhood strike across 
the base of the Smerwick peninsula, and occupy some 600 yards of 
the coast on the west side of Smerwick Harbour. A broad tract of 
blown sand and peat intervenes between the outcrop of the Silurian 
at Gortnagan Point and the nearest exposure of Dingle Beds, which 
lies on the south coast of Smerwick Harbour, north-north-east of 
Ballyferriter. The Silurians are on the strike of those at Ferriter’s 
Cove, and are clearly a reduced development of the series so well 
exposed there, but the correlation of the two sets of exposurcs 
is by no means easy. 
Their succession is: at the top :— 
Thickness in{feet. 
D (1) Yellow calcareous flags and slates, with many fucoids. 320 (seen) 
FAuv_t. 
D (2) Calcareous flagsand slates, with a band of hard green 
Sins eee Gh naan Batata Na aad aaah. Mee hy 320 
Fault 
D (3) Ashes pale at the top, red below; fine red sandy layers 
PUMIVUCKN AUB, Twas ara isintee arch das Suasasa rae ante em tals oo 
D (4) Yellow calcareous flags and slates ...................60085 290 
(Sy) Gre euisa Muliysasl eC Shent a atcpecy cs heise elon ee ee eee eae’ 12 
D <6) Red sandy and fossiliferous ashy beds, very coarse in 
BUA ech OSc cae cn cotiGReDABUe GE) (oor >ap Han aes a Cbreee Seeman 
D (7) Nocialis ERO CL eater een me mn Ae 50 
(Se Heed Satichy Asie, pie oa: gas: ah dace taa teadoae ye hwedeegas ows 40 
(9) — Mellow caleareous flars andslates: ......005,.00i020.ec002.6 OO 
IDiClOy Bed \sandy amdvashy beds. .g.4... cc sges der cssaneratances 50 
D (11) Yellow calcareous flags and slates of Fort Dunore!... 60 
WCW > Greer! SANA JASIIES (7. Wini cota i. dio Kite eeeese search ones 20 
LUNG IBGE RIE eT) a1 a Wa 18 
FAULT-DEBRIS, 
CEE Coarse conalomerate So toslin cs cies ecsegns aot aan 24. 
1 Also called Fort Dolore. 
